Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
I went ahead and followed the instructions and downloaded the applet. The two connection options given me were digital output or USB 2.0. I selected the 2.0 option but so far I have been unable to get any sound coming out of the Touch. Does the fact that the USB 2.0 option came up mean that at least the Touch sees the DAC I have connected to it? Further, does anyone have any suggestions of what might be going on? Another piece of info: I can select internet radio off the Touch now (but again no sound), but I cannot play any of my music. I select a song and press the forward button but the song will not begin to play. Has anyone seen this issue as well? Thanks. GLR glrtrgi's Profile: http://forums.slimdevices.com/member.php?userid=63072 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
glrtrgi wrote: I went ahead and followed the instructions and downloaded the applet. The two connection options given me were digital output or USB 2.0. I selected the 2.0 option but so far I have been unable to get any sound coming out of the Touch. Does the fact that the USB 2.0 option came up mean that at least the Touch sees the DAC I have connected to it? Further, does anyone have any suggestions of what might be going on? Another piece of info: I can select internet radio off the Touch now (but again no sound), but I cannot play any of my music. I select a song and press the forward button but the song will not begin to play. Has anyone seen this issue as well? Thanks. GLR wrong thread. Post over here instead: http://forums.slimdevices.com/showthread.php?94512-Announce-Enhanced-Digital-Output-app-USB-Dac-and-192k-Digital-Ouput *Location 1:* VortexBox 4TB (2.2) LMS 7.8 Transporter, Touch, Boom, Radio w/Battery (all ethernet except Radio) *Location 2:* VBA 3TB (2.2) LMS 7.8 Touch Benchmark DAC I, Boom, Radio w/Battery (all ethernet except Radio) *Office:* Win7(64) LMS 7.8 Squeezelite *Spares:* VBA 4TB, SB3, Touch (3), Radio (3), CONTROLLER *Controllers:* iPhone4S iPad2 (iPeng7 Squeezepad), CONTROLLER, or SqueezePlay 7.8 on Win7(64) laptop Ripping (FLAC) - dbpoweramp, Tagging - mp3tag, Streaming - Spotify garym's Profile: http://forums.slimdevices.com/member.php?userid=17325 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Done. Thanks. GLR glrtrgi's Profile: http://forums.slimdevices.com/member.php?userid=63072 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
dahmwern wrote: So, I've got a Twisted Pear Audio Opus DAC with their USB receiver. Soon I'll be switching this over to have the S/PDIF receiver with TOSLINK however until my ODAC comes (supports 24/96 unlike the TPA USB receiver) all I've got is this DAC. I got it working with no ticks or pops thanks to the solution on page 12. However, I tried Soudcheck's TT 3.0 mod and then I couldn't get USB working again. Can someone help me out on how I can have both going at the same time? Try disabling or commenting out the entire tt 3.0 priority section for starters. Or, alternatively, you can copy/paste into the tt 3.0 file the new priority section that SBGK has developed here: http://touchsgotrythm.blogspot.co.uk/ rgro's Profile: http://forums.slimdevices.com/member.php?userid=34348 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
I wonder if I could just do this? http://forums.slimdevices.com/showthread.php?94512-Announce-Enhanced-Digital-Output-app-USB-Dac-and-192k-Digital-Ouput dahmwern's Profile: http://forums.slimdevices.com/member.php?userid=56260 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
dahmwern wrote: I wonder if I could just do this using a USB Hub? I'm not really sure how a USB hub solves ticks and pops if its just a pass through... http://forums.slimdevices.com/showthread.php?94512-Announce-Enhanced-Digital-Output-app-USB-Dac-and-192k-Digital-Ouput It looks like you can do TT3.0 and EDO at the same time, though I think that would interfere with one another. I'll have to try it out sometime. You could try a hub, but I doubt it'll solve the issue of EDO and TT 3.0 working together. EDO and TT 3.0 will work together just fine if you modifiy or eliminate the TT 3.0 priority section. rgro's Profile: http://forums.slimdevices.com/member.php?userid=34348 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
rgro wrote: You could try a hub, but I doubt it'll solve the issue of EDO and TT 3.0 working together. EDO and TT 3.0 will work together just fine if you modifiy or eliminate the TT 3.0 priority section. I think the idea of the USB hub was to eliminate the ticks and pops, outside of EDO itself. However, I just discovered EDO and others probably know more than I do about this. dahmwern's Profile: http://forums.slimdevices.com/member.php?userid=56260 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
dahmwern wrote: I think the idea of the USB hub was to eliminate the ticks and pops, outside of EDO itself. However, I just discovered EDO and others probably know more than I do about this. Sorry if this has been covered many times, and if it has just let me know and I'll find it on my own, but has the USB hub trick been proven to work? EDIT: EDO + USB 2.0 hub works for me. The reason for the hub is that there seems to be a bug in the Touch hardware that prevents asynchronous USB from working properly with a DAC that uses full speed mode. Asynch works fine when using high speed mode, so the hub talks high speed to the Touch, and full speed to the DAC and everybody is happy. The hub fix will work with the approaches posted in this thread, but the EDO applet makes using a USB DAC MUCH easier than hacking up your alsa files. The stuff in this thread should just quietly go away now that Triode has done it right. John S. JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
So, I've got a Twisted Pear Audio Opus DAC with their USB receiver. Soon I'll be switching this over to have the S/PDIF receiver with TOSLINK however until my ODAC comes (supports 24/96 unlike the TPA USB receiver) all I've got is this DAC. I got it working with no ticks or pops thanks to the solution on page 12. However, I tried Soudcheck's TT 3.0 mod and then I couldn't get USB working again. Can someone help me out on how I can have both going at the same time? dahmwern's Profile: http://forums.slimdevices.com/member.php?userid=56260 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Hi Triode: Look at: http://www.qnktc.com/ab_11/ Works very well on Vortexbox Regards Juan -- realmadrid realmadrid's Profile: http://forums.slimdevices.com/member.php?userid=54676 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
realmadrid;693809 Wrote: Hi Triode: Look at: http://www.qnktc.com/ab_11/ Works very well on Vortexbox Regards Juan So if you have one - could you try it on Touch with my kernel and let me know how you get on? I'm not looking to buy one, I was hoping people here would have usb audio class 2 dacs they could try with touch and help us make it work. -- Triode Triode's Profile: http://forums.slimdevices.com/member.php?userid=17 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Does anyone here have a USB Audio Class 2 dac?? If so I would be interested in what happens with my kernel #3 in the usb dac experiement thread. I can't test as I don't have the appropriate dac, but I think I've included the more recent linux changes which _may_ allow class 2 dacs to do something. -- Triode Triode's Profile: http://forums.slimdevices.com/member.php?userid=17 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Furthermore, if you buy a used iPod Touch 8Gb to control the player .Instructions for connecting USB DAC to Touch ..! a href=http://www.poldera.com/;i Keep Smart Cover,iKeep/a -- chargepoldera chargepoldera's Profile: http://forums.slimdevices.com/member.php?userid=54265 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
I'd like to encourage more people to try the USB tests on the link above. It looks like my modifications + an external high speed hub enable usb 1.1 async dacs to work without any drops. Would like to get more postive results of this. I consider the modifications stable enough for more people to try now. Note - you are probably likely to need an external high speed hub which will cost 10 GBP. (See explination on experiment thread) -- Triode Triode's Profile: http://forums.slimdevices.com/member.php?userid=17 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
JohnSwenson;674869 Wrote: I have a little bit of news, Triode from these forums is now looking into the issues as well, he's looking into the inner workings of the low level USB driver which is where the issues seem to be coming from. Say tuned this may eventually get resolved. John S. I've started a new thread to discuss where I have got to on this: http://forums.slimdevices.com/showthread.php?t=93310 I'm looking for people to try out the kernel modification I've made and wanted to avoid diluting all the useful information here with my tests. If/when we make progress on my thread will post back here. -- Triode Triode's Profile: http://forums.slimdevices.com/member.php?userid=17 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
JohnSwenson;681543 Wrote: Montana, at this point I cannot guarantee a QB9 is going to work, some people have had them work great others have not. The problem is for sure in the Touch firmware, but we don't know exactly what is wrong yet. I don't have a good guaranteed to work in all cases solution yet. John S. No pressure (LOL)... I'm also eager to see the USB issues resolved... It would be aswesome to connect a QB-9 (or similar DAC) in Async mode, for 24/96 hi-res files. Thanks for your continued support (the SBT is great product!) Leo. -- leoduran leoduran's Profile: http://forums.slimdevices.com/member.php?userid=53189 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Paul, the configurations near the start of this thread should get sound coming out of the proton. It may work fine, it may have ticks and pops. The modifications I originally posted for the HRT music streamer II may also work. If they work at all they will most likely work well. This runs the DAC in 16 bit mode. I'm not sure if the Proton (or QB9) will run in 16 bit mode. If it only runs in 24 bit mode, you have two choices, the original config, which runs plughw mode which can automatically convert to whatever the DAC can read, BUT causes ticks and pops in many cases (but not all!) or go with hw mode, which radically cuts down on ticks and pops, but you need a new jive_alsa which outputs the 24 bit format the DACs take. I've put the new jack_alsa on the net if you are interested. All the necessary configurations are in this thread somewhere (It will take some time for me to find them!) Montana, at this point I cannot guarantee a QB9 is going to work, some people have had them work great others have not. The problem is for sure in the Touch firmware, but we don't know exactly what is wrong yet. I don't have a good guaranteed to work in all cases solution yet. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Have you been able to figure out how to reliably connect the QB-9 to the Touch's USB output without getting any pops or clicks? Is it related to variations in the QB-9, the Touch (hardware or firmware) or possibly in the setting on the source server? I would like to buy a QB-9 but only if there is a way to reliably hook it up to the Touch. I know that there are now two versions of the QB-9 but the second version can still operate in USB class 1 via a dip switch. Thanks to everyone for keeping this thread going. The Touch is a really great piece of hardware. Montana Rane -- MontanaRane1094 MontanaRane1094's Profile: http://forums.slimdevices.com/member.php?userid=52956 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
JohnSwenson;674869 Wrote: I have a little bit of news, Triode from these forums is now looking into the issues as well, he's looking into the inner workings of the low level USB driver which is where the issues seem to be coming from. Say tuned this may eventually get resolved. John S. John, Triode, Paul and others. Cheers for all the time you have dedicated to this issue with USB Dac playback of 24/192-files! It is an inspiration to read about your labour on this. If it is solved in time for Christmas, it will indeed be THE Christmas gift for me, too! I would love to have my Touch output 24/192 to my Ayre QB-9. Best wishes, Peter -- Rosewind Rosewind's Profile: http://forums.slimdevices.com/member.php?userid=33346 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Rosewind;678198 Wrote: John, Triode, Paul and others. Cheers for all the time you have dedicated to this issue with USB Dac playback of 24/192-files! It is an inspiration to read about your labour on this. If it is solved in time for Christmas, it will indeed be THE Christmas gift for me, too! I would love to have my Touch output 24/192 to my Ayre QB-9. Best wishes, Peter Hi Peter, getting 192 to work over USB is a very different issue, that is going to be much more difficult. There are two classes of issues right now: Async 24 bit has some issues, current info is pointing to it NOT being ALSA related, rather something in the low level USB driver. Doing 192 needs a recent ALSA which supports audio 2.0. This is something Logitech does not want to do since the drivers for the internal DAC and S/PDIF would have to be rewritten for the new ALSA. Even if this is done we still need to get the first issue addressed. The upshot is that getting 192 working by Christmas is NOT going to happen! John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Thanks for clarifying, John. I promise to be a good boy and wait patiently. Good luck! Best wishes, Peter -- Rosewind Rosewind's Profile: http://forums.slimdevices.com/member.php?userid=33346 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
JohnSwenson;678217 Wrote: Hi Peter, getting 192 to work over USB is a very different issue, that is going to be much more difficult. There are two classes of issues right now: Async 24 bit has some issues, current info is pointing to it NOT being ALSA related, rather something in the low level USB driver. Doing 192 needs a recent ALSA which supports audio 2.0. This is something Logitech does not want to do since the drivers for the internal DAC and S/PDIF would have to be rewritten for the new ALSA. Even if this is done we still need to get the first issue addressed. The upshot is that getting 192 working by Christmas is NOT going to happen! John S. Heck - I would be tickled pink to get 24/44.1 output to my Proton. :) 24/48, 24/88.2, and 24.96 would be icing on the cake! :) -Paul -- paul.raulerson paul.raulerson's Profile: http://forums.slimdevices.com/member.php?userid=50346 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
JohnSwenson;674869 Wrote: I have a little bit of news, Triode from these forums is now looking into the issues as well, he's looking into the inner workings of the low level USB driver which is where the issues seem to be coming from. Say tuned this may eventually get resolved. John S. (grin) What a nice Christmas present that would be. :) -Paul -- paul.raulerson paul.raulerson's Profile: http://forums.slimdevices.com/member.php?userid=50346 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
I have a little bit of news, Triode from these forums is now looking into the issues as well, he's looking into the inner workings of the low level USB driver which is where the issues seem to be coming from. Say tuned this may eventually get resolved. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
FYI, I added fragment size and mmap to my asound.conf file with the
Music Fidelity VLink. No more clicks or pops...at least for the last
hour. I also think the sound improvedtry it and report back.
pcm.usbdac {
type hw;
card VLink;
}
pcm.plugusb {
type plug;
slave.pcm usbdac;
}
ctl.plugusb {
type hw;
card VLink;
}
fragment_size=4096 ~~fragment size
mmap_emulation BOOL~~mmap
pcm.!default plugusb
--
dynaudiorules
'Dynobot's Audio' (https://sites.google.com/site/computeraudioorg/)
dynaudiorules's Profile: http://forums.slimdevices.com/member.php?userid=12568
View this thread: http://forums.slimdevices.com/showthread.php?t=82110
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Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
I would never ever consider to run in plugin mode. That's an awful downgrade compared to run hw mode. I'm pretty sure that the poor usb controller plus drivers are making problems. If I wanted to go the USB route I'd either get myself a MAC mini with Pure Music on it or a slim Linux rt-installation on a small computer such as FitPc (I still have one around. It's much too expensive though) Quite some people are extremely happy running an Alix board with a stripped down Linux on it). -- soundcheck ::: ' Touch Toolbox 3.0 and more' (http://soundcheck-audio.blogspot.com) ::: by soundcheck soundcheck's Profile: http://forums.slimdevices.com/member.php?userid=34383 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
soundcheck;674319 Wrote: If I wanted to go the USB DAC route I'd get away from Squeezebox. I'd either get myself a MAC mini with Pure Music on it or a slim Linux rt-installation on a small computer such as FitPc (I still have one around. Nowadays it's much too expensive though) Quite some people are extremely happy running an Alix board with a stripped down Linux on it). Agreed, I have both a MacMini and a slim Linux with rt installed etc. They both handle the VLink without a problem and sound spectacular. Currently I have the Linux machine running into my VLink which is feeding an Audiogd Ref7 Dac. Can't say I have any desire to use anything else, except just for the sake of experimenting. -- dynaudiorules 'Dynobot's Audio' (https://sites.google.com/site/computeraudioorg/) dynaudiorules's Profile: http://forums.slimdevices.com/member.php?userid=12568 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
soundcheck;674319 Wrote: I would never ever consider to run in plugin mode. That's an awful downgrade compared to running in hw mode. I'm pretty sure that the poor usb controller plus drivers are making problems. If I wanted to go the USB DAC route I'd get away from Squeezebox. I'd either get myself a MAC mini with Pure Music on it or a slim Linux rt-installation on a small computer such as FitPc (I still have one around. Nowadays it's much too expensive though) Quite some people are extremely happy running an Alix board with a stripped down Linux on it). Um- you pretty obviously have not heard one of Gordon Rankin's DACs attached to a Touch. It takes the output of a touch to an -entirely- new, almost unbelievable level. Between the snaps and pops that is. This change -almost- makes it work, one gentle snap or two every 15 or 20 seconds. So damn close... -Paul -- paul.raulerson paul.raulerson's Profile: http://forums.slimdevices.com/member.php?userid=50346 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
How are you running the HRT, in 16 or 24 bit mode? Just 16 bit. Knowing how well the HRT responded to TT2, I'd really like to be able to give TT3 a go. -- john4456 john4456's Profile: http://forums.slimdevices.com/member.php?userid=23008 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
n0rb3rt;671275 Wrote: It's a UAC3553B chip, which I think supports sync and async according to a spec I found. http://www.chipfind.ru/datasheet/pdf/micronas/uac3553b.pdf I believe it also says it supports up to 48kHz sample rate. This chip is definitely NOT asynchronous. It works in an interesting way, its using adaptive mode, but rather than have an adjustable clock for pulling data out of the FIFO, it uses an ASRC (asynchronous sample rate converter) and a fixed clock. I haven't heard of anybody doing it exactly like that. I'm not sure why it should be sounding like you describe, I can't think of anything in the Touch that could possibly be doing that. What is in your asound.conf file? Are you using plughw or hw? Whichever you are using try the other and see if you get any sound. Another thing to try is different sample rate files. Try a 44.1 file and a 48 and see if there is any difference. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
john4456;671053 Wrote: John, I have the HRT working perfectly with Klaus' TT2, but can't get a sound out of it with TT3. TT3 includes a complex looking asound.conf file. I have tried editing this (to include details of the usb dac) and also replacing it with the asound.conf file that works for me with TT2. Neither approach is working so far. I haven't tried TT3.0 with a USB DAC yet, I might have some time to try that tonight. How are you running the HRT, in 16 or 24 bit mode? John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
JohnSwenson;670973 Wrote: You can easily get an HRT streamer working in 16 bit mode with a Touch, it takes some asound.config work and changing a couple settings in some lua files. This is documented in this thread. Remember this is in 16 bit mode so ANY volume setting other than 100 is going to loose bits from 16 bit files, and you will loose bits all over the place from 24 bit files. Running HRTs in 24 bit mode is more complicated, the HRT (and most other USB DACs) use a different 24 bit mode than the Touch supports. You have two choices, use plughw, which automatically does the conversion, but it decreases SQ and adds a clicks and pops, OR use a jive_alsa I have written which sends out 24 bit data in the correct format. For this to work you have to make some changes in the alsa.conf and some changes to the lua files. This actually sends real 24 bit data to the HRT, BUT at least in my situation still has some clicks and pops every so often. I haven't found a good solution for 24 bit yet. John S. John, I have the HRT working perfectly with Klaus' TT2, but can't get a sound out of it with TT3. TT3 includes a complex looking asound.conf file. I have tried editing this (to include details of the usb dac) and also replacing it with the asound.conf file that works for me with TT2. Neither approach is working so far. -- john4456 john4456's Profile: http://forums.slimdevices.com/member.php?userid=23008 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
JohnSwenson;670155 Wrote: Thats not normal, that sounds like what happens to some DACs when the internal buffer underflows and it laps itself in the internal buffer. I know exactly what you are hearing, I've heard it myself with DACs I've built myself when things weren't quite working right. Do you know anything about the USB input? Is it asynchronous? What sample rates does it support? What USB chip does it use? Thanks, John S. It's a UAC3553B chip, which I think supports sync and async according to a spec I found. http://www.chipfind.ru/datasheet/pdf/micronas/uac3553b.pdf I believe it also says it supports up to 48kHz sample rate (though I'm more familiar with sample rate as expressed in Kbps so I'm not sure if this is equivalent). -- n0rb3rt n0rb3rt's Profile: http://forums.slimdevices.com/member.php?userid=51287 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
I just got a Calyx 24/192 DAC and that is not showing up with aplay -l. This is what dmesg shows: usb 1-1: new high speed USB device using fsl-ehci and address 2 usb 1-1: configuration #1 chosen from 2 choices invalid HEADER snd-usb-audio: probe of 1-1:1.0 failed with error -5 I tried this with 2 Touches with the same error. The DAC works natively in Snow Leopard and is also found and shows up as an ALSA device on my VortexBox Fusion VM. Any ideas? I get the feeling I'm just SOL. SqueezeSlave doesn't support hi res and the VortexBox solution is unreliable -- it cuts out completely after a little while. Ah I don't want to give up the Squeezebox interface, but I definitely want to use the async USB on my DAC! Thanks... -- kimchee411 kimchee411's Profile: http://forums.slimdevices.com/member.php?userid=51401 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Probably you'd try the newest Vortexbox +Vortexboxplayer feeding your DAC. Buy yourself a Zotac Zbox or similar at 200$ and you'll might end up with a quite nice solution. I might try it myself. I tried the MF V-DAC II (IMO a very nice DAC) on my latest Touch setup (using plughw!!!) against a Windows 7 + JRMC 16 (RAM playback and Wasapi event style) + Fidelizer setup. My little ADAM A5x speakers were more than sufficient to tell that the W7 setup IMO performed much better at that point. Conclusion from my side: The Touch and USB DACs won't go together properly. I won't spent anymore time on that subject. The Touch via SPDIF (after heavily tweaking) can IMO outperform highest quality USB-SPDIF interfaces though. Cheers -- soundcheck ::: ' Touch Toolbox 3.0 and more' (http://soundcheck-audio.blogspot.com) ::: by soundcheck soundcheck's Profile: http://forums.slimdevices.com/member.php?userid=34383 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
kimchee411;670739 Wrote: I just got a Calyx 24/192 DAC and that is not showing up with aplay -l. This is what dmesg shows: usb 1-1: new high speed USB device using fsl-ehci and address 2 usb 1-1: configuration #1 chosen from 2 choices invalid HEADER snd-usb-audio: probe of 1-1:1.0 failed with error -5 I tried this with 2 Touches with the same error. The DAC works natively in Snow Leopard and is also found and shows up as an ALSA device on my VortexBox Fusion VM. Any ideas? I get the feeling I'm just SOL. SqueezeSlave doesn't support hi res and the VortexBox solution is unreliable -- it cuts out completely after a little while. Ah I don't want to give up the Squeezebox interface, but I definitely want to use the async USB on my DAC! Thanks... It sounds like your DAC is using the USB audio 2.0 spec, this is not supported in the Touch. We have asked Logitech if they would switch to a new version of ALSA which supports 2.0 and they have stated they are not interested in doing this. Its not an easy task to switch. The newer ALSA versions have a different driver interface which means that the drivers for the other audio devices (internal DAC, S/PDIF and effects speaker) would have to be re-written, no way does Logitech have the bandwidth to do this. Switching to the new ALSA is not that hard if ALL you EVER want to do is connect to a USB DAC, but there is no way Logitech is going to do THAT. The USB audio driver comes as a standard part of any ALSA release, but the hardware devices in the Touch have custom drivers that Logitech wrote, they are not part of any ALSA release. So if any new version of ALSA is compiled into the firmware it automatically gets the correct version of the USB audio driver, but the custom drivers for the Touch would not compile, they would either have to be re-written or removed from the firmware. I really doubt Logitech is going to release a firmware that can only output audio through a USB DAC. What I would suggest is see if your DAC has a way to run using the old USB Audio 1.0 spec (which is what the Touch supports). Some DACs give you the option. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
john4456;670816 Wrote: Klaus, your experience with the V-Dac is the opposite of mine with the HRT streamers. Its a shame (for me!) that it seems you won't be working further on USB implementation for TT3. I have tried to get the HRT working with TT3, but without success so far. Should it just be a question of editing the asound.conf file (ignoring buffer issues) ? If so, I would be really grateful for some pointers. Thanks You can easily get an HRT streamer working in 16 bit mode with a Touch, it takes some asound.config work and changing a couple settings in some lua files. This is documented in this thread. Remember this is in 16 bit mode so ANY volume setting other than 100 is going to loose bits from 16 bit files, and you will loose bits all over the place from 24 bit files. Running HRTs in 24 bit mode is more complicated, the HRT (and most other USB DACs) use a different 24 bit mode than the Touch supports. You have two choices, use plughw, which automatically does the conversion, but it decreases SQ and adds a clicks and pops, OR use a jive_alsa I have written which sends out 24 bit data in the correct format. For this to work you have to make some changes in the alsa.conf and some changes to the lua files. This actually sends real 24 bit data to the HRT, BUT at least in my situation still has some clicks and pops every so often. I haven't found a good solution for 24 bit yet. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
kimchee411;670739 Wrote: I just got a Calyx 24/192 DAC and that is not showing up with aplay -l. This is what dmesg shows: usb 1-1: new high speed USB device using fsl-ehci and address 2 usb 1-1: configuration #1 chosen from 2 choices invalid HEADER snd-usb-audio: probe of 1-1:1.0 failed with error -5 I tried this with 2 Touches with the same error. The DAC works natively in Snow Leopard and is also found and shows up as an ALSA device on my VortexBox Fusion VM. Any ideas? I get the feeling I'm just SOL. SqueezeSlave doesn't support hi res and the VortexBox solution is unreliable -- it cuts out completely after a little while. Ah I don't want to give up the Squeezebox interface, but I definitely want to use the async USB on my DAC! Thanks... Reading about the Calyx ,nice design btw :) But : Asynchronous USB with *dedicated USB/ASIO Windows driver* by Thesycon. Native Mac support. ?? The sunny side is that it has an SPDIF coaxial input too and the ESS Sabre D/A converter . http://www.itemaudio.co.uk/calyx_dac.html A lot of text about special drivers around in the product description. So the USB seems designed for interfacing with computers with some setup required . Can not imagine it will be half bad with spdif either into a products such as the Touch -- Mnyb Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 MeridianG98DH 2 x MeridianDSP5200 MeridianDSP5200HC 2 xMeridianDSP3100 +Rel Stadium 3 sub. Bedroom/Office: Boom Kitchen: Touch + powered Fostex PM0.4 Misc use: Radio (with battery) iPad 64gB wifi +3g with iPengHD SqueezePad (in storage SB3, reciever ) Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
n0rb3rt;669805 Wrote: Successfully connected SB touch to Outlaw R2150 USB. Works 90% of the time and sounds great. But occasionally the sound degrades into a strange sort of tinny, robotic distorted version. Sometimes it fixes itself after a minute but sometimes requires a full reboot (unplug) to fix. Is this the same thing as the clicks and pops others have described? Or am I dealing with something different? Haven't tried changing buffer settings or other tweaking yet. Thats not normal, that sounds like what happens to some DACs when the internal buffer underflows and it laps itself in the internal buffer. I know exactly what you are hearing, I've heard it myself with DACs I've built myself when things weren't quite working right. Do you know anything about the USB input? Is it asynchronous? What sample rates does it support? What USB chip does it use? Thanks, John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Successfully connected SB touch to Outlaw R2150 USB. Works 90% of the time and sounds great. But occasionally the sound degrades into a strange sort of tinny, robotic distorted version. Sometimes it fixes itself after a minute but sometimes requires a full reboot (unplug) to fix. Is this the same thing as the clicks and pops others have described? Or am I dealing with something different? Haven't tried changing buffer settings or other tweaking yet. -- n0rb3rt n0rb3rt's Profile: http://forums.slimdevices.com/member.php?userid=51287 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Hi folks. I just made a Musical Fidelity V-DAC-II working on TT3.0+ . A nice device. Under Windows the DAC sounds really nice (JRMC + wasapi event + ramplayback and Fidelizer-All On) On the SB I'm not there yet. (Still running the device plughw) John. FYI. You might want to try to play with the ehci interrupt 37. Just change it in my prio function of TT3.0. I just tried to set 37 to prio 96. I'm currently runnning the buffer at 4000us stable. Let see if it is really that stable. ;) Sounds promising to me. Cheers -- soundcheck ::: ' Touch Toolbox 3.0 and more' (http://soundcheck-audio.blogspot.com) ::: by soundcheck soundcheck's Profile: http://forums.slimdevices.com/member.php?userid=34383 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
After my message, I did find some inactive code that is probably for usb use, but I am not very linux friendly for the moment ^^. I will wait for the next release. By the way I use Coax Spdif and I am very pleased with the result. It is a big step over the TT2.0. I never thought that we can have such improvement only on the source side. I realise that I did have change speakers that were probably good ;-) Thanks for your work !! -- Paulkouhan Paulkouhan's Profile: http://forums.slimdevices.com/member.php?userid=49842 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Hi ! Klaus (soundcheck) has made his TT 3.0 mod available !! I did install it but I have some trouble to make my USB dac working ... It was OK with the TT 2.0 mod with John advices. I did not found yet how to change the card to the USB one... Does someone achieve to make it work ? -- Paulkouhan Paulkouhan's Profile: http://forums.slimdevices.com/member.php?userid=49842 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Acalex;667816 Wrote: Hi guys, I am new to this forum and found out this great thread which made me find an hope to connect the Touch to an only USB DAC. I am not sure if the DAC I would like to buy would wourk with this system, would anybody advise me? It is a feedbackless DAC produced by a German company Linnenberg. The DAC is the UDC1 and I think it uses the USB interface produced by M2Tech capable of 32/384. Thanks a lot for any advice! This is not going to work with the Touch, it sounds like it either requires a custom driver or a USB Audio 2.0 driver, neither of which will work with the Touch. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Paulkouhan;668566 Wrote: Hi ! Klaus (soundcheck) has made his TT 3.0 mod available !! I did install it but I have some trouble to make my USB dac working ... It was OK with the TT 2.0 mod with John advices. I did not found yet how to change the card to the USB one... Does someone achieve to make it work ? TT30 is pretty much prepared to support compliant USB devices. The function is just not activated. I just need a device for testing. -- soundcheck ::: ' Touch Toolbox 3.0 and more' (http://soundcheck-audio.blogspot.com) ::: by soundcheck soundcheck's Profile: http://forums.slimdevices.com/member.php?userid=34383 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Hi guys, I am new to this forum and found out this great thread which made me find an hope to connect the Touch to an only USB DAC. I am not sure if the DAC I would like to buy would wourk with this system, would anybody advise me? It is a feedbackless DAC produced by a German company Linnenberg. The DAC is the UDC1 and I think it uses the USB interface produced by M2Tech capable of 32/384. Thanks a lot -- Acalex Acalex's Profile: http://forums.slimdevices.com/member.php?userid=51067 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Hegel HD2 and SB Touch over USB = a lot of pops clicks in my case :( -- Bery Bery's Profile: http://forums.slimdevices.com/member.php?userid=32317 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
JohnSwenson;664168 Wrote: Thanks Paul, I dodn't think integer mode has anything to do with it. I'm not a MAC expert but my understanding is that the inner guts of MAC audio processing runs using 32 bit floats. The data in the files and the actual hardware use integers so there is conversion back and forth. My understanding is that integer mode bypasses the internal floating point system and keeps everything in integers so no conversion is necessary. But as to why a hub would have ANY effect on that I have no idea. The touch uses linux which runs in integers unless you jump through a bunch of hoops. I will try a hub, I haven't done that yet. Thanks, John S. Ah- found the writeup on Macs and why. Perhaps it will help with an idea. The Click problem seems to be really prevalent these days. -Paul -You probably have a Mac whose model has been introduced before 2008 end. These models have a limitation in their USB ports power supply that makes a few samples to be set to 0 every ~16,000, and this only in Integer Mode. And this is what you can hear as clicks. To continue to get the benefits of the Integer Mode, the most widely used workaround consists in connecting a powered USB hub between the DAC and the Mac. (With only the DAC connected to it of course).- -- paul.raulerson paul.raulerson's Profile: http://forums.slimdevices.com/member.php?userid=50346 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
JohnSwenson;664319 Wrote: Hi Klaus, I did try nrpacks, it makes no difference for xruns, but does significantly affect sound quality. There are several parameters avaivable for the basic usb driver but I want to sit down with the source code and see what they do. The xruns do NOT seem to be in the alsa space, I'm not getting any alsa log messages about any xruns until I get buffer settings very bad. I think its something with the generic USB driver/hardware. Another interesting tidbit is the firmware used. With an early 7.5.1 firmware I get LOTS of xruns with 88.2 (this is all aplay), but a recent 7.5.1 has almost no xruns (still a few about two per song). This is with everything else setup exactly the same. With 96 the early and recent 7.5.1 give about the same results. SOMETHING in the firmware changed which caused major differences in xruns. John S. Is there any way to control the video refresh or priorities? I tried turning the display completely off, and that seemed to make a difference. Won't claim anything until someone else can duplicate the results please. Of course, without any display at all, the unit is a lot less attractive to my wife. She has really grown to like the darn clock! :) But perhaps toning down the video interrupts or priorities or something... -Paul -- paul.raulerson paul.raulerson's Profile: http://forums.slimdevices.com/member.php?userid=50346 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
paul.raulerson;664696 Wrote: Is there any way to control the video refresh or priorities? I tried turning the display completely off, and that seemed to make a difference. Won't claim anything until someone else can duplicate the results please. Of course, without any display at all, the unit is a lot less attractive to my wife. She has really grown to like the darn clock! :) But perhaps toning down the video interrupts or priorities or something... -Paul I'm in the final state of preparing my Toolbox 3.0. YOu can turn the display off and more, much more. You'd get your wife an iPad with iPeng or similar. I'm sure she'll love it. A nice compromise. Or better a win-win ;) -- soundcheck ::: ' Touch Toolbox 2.0 and more' (http://soundcheck-audio.blogspot.com) ::: by soundcheck soundcheck's Profile: http://forums.slimdevices.com/member.php?userid=34383 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
soundcheck;664705 Wrote: I'm in the final state of preparing my Toolbox 3.0. YOu can turn the display off and more, much more. You'd get your wife an iPad with iPeng or similar. I'm sure she'll love it. A nice compromise. Or better a win-win ;) (grin) My wife has an iPhone, an iPad, and a Macbook, as indeed, do I. The kids have iPhones and want iPads. :) Our main music system is (or was..) Mac based with Amarra. Snake oil and all. :) iPeng is pretty nice in some ways, for example, in the size of the icons it displays in Album views, and the nice sorted list display. On the other hand, some of the user interface is - atrocious. Three different windows you can swipe around just for playing the music? It's not good... in fact, it is enough to confuse me, much less my wife and daughter. When they get confused, they start fussing like it is all my fault by the way... The Squeezebox application is a bit better, but it has some rough edges too, just fewer of them. The Squeezepad App is pretty nice, though if two people go to access the server at the same time, Squeezepad can easily get confused. And if you don't see the little tabs, getting playlists out of the way is a chore! Can you send me just the settings or commands that modify the video stuff? I think your toolbox is pretty cool, but I am trying to make as few changes, and control even those changes as much as possible. I still have hopes of finding is screwing with the USB output and get my favorite DAC to work without snap, crackle, and pop! It isn't really any kind of a bother to edit a couple or three files. I speak vi natively. :) -Paul -- paul.raulerson paul.raulerson's Profile: http://forums.slimdevices.com/member.php?userid=50346 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
paul.raulerson;664696 Wrote: Is there any way to control the video refresh or priorities? I tried turning the display completely off, and that seemed to make a difference. Won't claim anything until someone else can duplicate the results please. Of course, without any display at all, the unit is a lot less attractive to my wife. She has really grown to like the darn clock! :) But perhaps toning down the video interrupts or priorities or something... -Paul My understanding is that there is no video interrupt, applications put data in the framebuffer memory and the hardware takes care of sending it out to the screen without interrupting the processor at all. Now of course programs that are changing the data in the framebuffer could theoretically cause an interaction with the audio processes (for example continuously scrolling text) but if you have a static display thats not going to happen. I tried the screen off and I didin't notice any difference is xrun behavior, but it does improve the sound. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
JohnSwenson;664714 Wrote: My understanding is that there is no video interrupt, applications put data in the framebuffer memory and the hardware takes care of sending it out to the screen without interrupting the processor at all. Now of course programs that are changing the data in the framebuffer could theoretically cause an interaction with the audio processes (for example continuously scrolling text) but if you have a static display thats not going to happen. I tried the screen off and I didin't notice any difference is xrun behavior, but it does improve the sound. John S. I noticed fewer clicks and pops, but wasn't sure if I had managed to disable the display processing, or just turned the brightness down to zero. I did not notice any change in the sound other than a reduction in clicks and pops, and that was probably just coincidence. Aw well, it was a thought. Thanks John -Paul -- paul.raulerson paul.raulerson's Profile: http://forums.slimdevices.com/member.php?userid=50346 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Hi all. I have just bought a Squeezebox Touch, and I would very much like tot try the Hegel HD2, which is not asynchoneous. I can see that one has succeeded (post no. 123). However, I can see that there have been a lot of posting since then and I lost track. I have until now done nothing else than allowed it to update to newest official firmware. I can see that SHR ( written in the post 123) fiddled with different stuff, but it also seems if something has happened since then. The Hegel HD2 is well known for it's precise timing, so I see a possible good candidate here, and I already have one :-) I would be very happy if one could give me a hint of what to do and where to start in my own fiddling. -- henrylar henrylar's Profile: http://forums.slimdevices.com/member.php?userid=50613 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
I tried the the aplay -l as explained in the first post. It works perfect, no pops at all. Sorry for asking, but I got confused with the later posts, which probably has been about asynschroneous dac's. I will check the sound, but my experience with the Hegel is good when used from the computer. -- henrylar henrylar's Profile: http://forums.slimdevices.com/member.php?userid=50613 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
JohnSwenson;664319 Wrote: Hi Klaus, I did try nrpacks, it makes no difference for xruns, but does significantly affect sound quality. There are several parameters avaivable for the basic usb driver but I want to sit down with the source code and see what they do. The xruns do NOT seem to be in the alsa space, I'm not getting any alsa log messages about any xruns until I get buffer settings very bad. I think its something with the generic USB driver/hardware. Another interesting tidbit is the firmware used. With an early 7.5.1 firmware I get LOTS of xruns with 88.2 (this is all aplay), but a recent 7.5.1 has almost no xruns (still a few about two per song). This is with everything else setup exactly the same. With 96 the early and recent 7.5.1 give about the same results. SOMETHING in the firmware changed which caused major differences in xruns. John S. I played with nrpacks from 2007 onwards. At those days playing around with nrpacks made a huge difference. ;) During those days I also changed the kernel timer to 10khz instead of 1000Hz, which made a big difference. Within snd-usb-audio I also lowered the buffers which were set to 1000ms if I recall it correctly. Anyhow: I read that reasonable USB2.0 Alsa compliance starts with 1.0.23. Current Alsa - almost a year old - is 1.0.24. We're at 1.0.16 with the Touch. One more idea: Have you played around with the Alsa period parameter? You can change it in the known files. It is set to 2 by default. That's pretty aggressive. You might want to increase that and lower the buffersize. I don't have a DAC for testing it myself. Cheers -- soundcheck ::: ' Touch Toolbox 2.0 and more' (http://soundcheck-audio.blogspot.com) ::: by soundcheck soundcheck's Profile: http://forums.slimdevices.com/member.php?userid=34383 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
ok - I got pops when I changed to serious music, no one from streaming radio. So how if anyone could give me an idea about how to play with the buffer size. -- henrylar henrylar's Profile: http://forums.slimdevices.com/member.php?userid=50613 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
henrylar;664429 Wrote: I tried the the aplay -l as explained in the first post. It works perfect, no pops at all. Sorry for asking, but I got confused with the later posts, which probably has been about asynschroneous dac's. I will check the sound, but my experience with the Hegel is good when used from the computer. It might has something to do with USB1.1 vs. USB2.0. Certain chips read 24bit others 32bit asf asf. All that is not black and white. Many people over here, including me, experiencing underruns on certain DACs. Usually those which can also handle 24/192. If your Hegel works ... Enjoy. -- soundcheck ::: ' Touch Toolbox 2.0 and more' (http://soundcheck-audio.blogspot.com) ::: by soundcheck soundcheck's Profile: http://forums.slimdevices.com/member.php?userid=34383 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
BTW... ...Vortexboxplayer. Cool. Never heard about it before. I'll have a look at it. Back to good old mpd. ;) Cheers -- soundcheck ::: ' Touch Toolbox 2.0 and more' (http://soundcheck-audio.blogspot.com) ::: by soundcheck soundcheck's Profile: http://forums.slimdevices.com/member.php?userid=34383 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
soundcheck;664210 Wrote: John. Meanwhile I got a headless linux system running on a FitPc (I'm looking for a cheaper fanless micro PC solution around 100$) running squeezeslave (or mpd) and Alsa 1.0.24 on kernel 3.0. Finally no more begging Logitech for support - which will never happen anyhow. I'm much more flexible right now. With a bootable USB stick I can make any PC/MAC a squeeze client. Cheers That's very interesting. Can your PC/Mac client play hi-res? I loaded squeezeslave onto an old Mac and am playing with it as a squeeze client (- My USB DAC works great that way... :) but, it won't play high-res music. Either causes the DAC to loose lock, or else plays it at half speed. The first one is terrifying, but the second one can be quite entertaining. ;) -Paul -- paul.raulerson paul.raulerson's Profile: http://forums.slimdevices.com/member.php?userid=50346 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
paul.raulerson;664271 Wrote: I loaded squeezeslave onto an old Mac and am playing with it as a squeeze client (- My USB DAC works great that way... :) but, it won't play high-res music I don't think the SqueezeBox software players can play hi-res. -- toby10 toby10's Profile: http://forums.slimdevices.com/member.php?userid=12553 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
soundcheck;664210 Wrote: John. Perhaps there is something going wrong on the USB controller side. Or: You could also try to set snd-usb-audio parameters, such as nrpacks . I'm not sure though if you can do that on the Touch. Hi Klaus, I did try nrpacks, it makes no difference for xruns, but does significantly affect sound quality. There are several parameters avaivable for the basic usb driver but I want to sit down with the source code and see what they do. The xruns do NOT seem to be in the alsa space, I'm not getting any alsa log messages about any xruns until I get buffer settings very bad. I think its something with the generic USB driver/hardware. Another interesting tidbit is the firmware used. With an early 7.5.1 firmware I get LOTS of xruns with 88.2 (this is all aplay), but a recent 7.5.1 has almost no xruns (still a few about two per song). This is with everything else setup exactly the same. With 96 the early and recent 7.5.1 give about the same results. SOMETHING in the firmware changed which caused major differences in xruns. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
squeezeslave only does 44.1. There is an alternative which is vortexbox-player, it can go up to 192 as is. VBP has some problems, it only works with the SBS in VB (I think its just a configuration file that lets SBS know the capabilities of VBP), and it only runs on the linux distribution in VB. I have tested it with a VB installation on the server computer and another VB installation on a fitpc2 with SBS turned off and it does work at hi-res. Its almost certainly possible to get VBP to run on another distro, It sits on top of MPD and needs a proper connection between them. The scripts that set it all up probably have to be modified for a different environment. Another big problem with VBP is that it is NOT gapless, there is a slight gap between tracks. For some people this is not a problem, for others it is a major issue. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
JohnSwenson;664319 Wrote: Another interesting tidbit is the firmware used. With an early 7.5.1 firmware I get LOTS of xruns with 88.2 (this is all aplay), but a recent 7.5.1 has almost no xruns (still a few about two per song). This is with everything else setup exactly the same. With 96 the early and recent 7.5.1 give about the same results. SOMETHING in the firmware changed which caused major differences in xruns. What firmware revisions are the differences between? Not sure I see any differences in what built them - should all be here: http://svn.slimdevices.com/jive/7.5/trunk/squeezeos/src/imx35/ -- Triode Triode's Profile: http://forums.slimdevices.com/member.php?userid=17 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
I finally got some time off and have been working on this the last couple of days. I put some wave files on an SD card and have been trying aplay. I still get ticks and pops, but not as often as when playing from squeezeplay. I tried killing jive_alsa and jive so there was not much going on and that didn't make much difference. I also did a lot of work playing around with different thread priorities, especially the USB driver and that made almost no difference. I also tried many different alsa buffer properties through aplay switches and was never able to get it any better. I can make it worse by playing with these parameters, but I can't make it better. So the issue is not just something to do with squeezeplay, its in the alsa/USB driver hierarchy. I'm not getting any xruns from alsa so it might be something to do with the generic USB driver. Leaving the priorities alone and going back to squeezeplay the rate of clicks and pops goes up significantly for 44.1 and 88.2, much lower for 48 and 96. This sounds like a difference between internal and external clocks, which would mean that the async is not working right. BUT when using just aplay there is no difference in the rate of clicks and pops with different sample rate. Async is handled in the alsa usb audio driver so it should work the same from either squeezeplay or aplay. I also ran the Touch with my hacked in much newer alsa USB audio driver and got the same results, so I don't think its an issue with the async handling. At this point I'm running out of ideas. 44.1 and 88.2 are much worse than 48 and 96, but I can't figure out why. With aplay I still have clicks and pops, but I don't know where they are comming from, thread/interrupt priorities don't seem to be the issue, neither does buffer size. I also tried different nrpacks and that didn't make any difference to the click/pop behavior. Does anybody else have any thoughts for possible places to look? I'm kind of at a standstill right now. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
paul.raulerson;663276 Wrote: I choose the Wavelength with USB only over the Benchmark, but I really do love the Benchmark's sound. I have also heard that the Rega DAC does a bangup job with the Touch too. Wow. :) -Paul It (the Rega) does, indeed! -- rgro Rg System information Main: PS Audio Quintet Vortexbox Touch (wired) via optical Rega DAC LFD LE IV amp VA Mozart Grands REL Acoustics R305. Home Theatre: SBR (Wired) Pioneer VSX 919 Energy Take 5 Classic 5.1. SBS 7.6.1 r33149 running on a Vortexbox Appliance, V 1.9. Touch w/Hardware V.5. Touch: FW 7.6.1 r9486. Duet: FW 77 r9486. rgro's Profile: http://forums.slimdevices.com/member.php?userid=34348 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
JohnSwenson;664119 Wrote: I finally got some time off and have been working on this the last couple of days. I put some wave files on an SD card and have been trying aplay. I still get ticks and pops, but not as often as when playing from squeezeplay. I tried killing jive_alsa and jive so there was not much going on and that didn't make much difference. I also did a lot of work playing around with different thread priorities, especially the USB driver and that made almost no difference. I also tried many different alsa buffer properties through aplay switches and was never able to get it any better. I can make it worse by playing with these parameters, but I can't make it better. So the issue is not just something to do with squeezeplay, its in the alsa/USB driver hierarchy. I'm not getting any xruns from alsa so it might be something to do with the generic USB driver. Leaving the priorities alone and going back to squeezeplay the rate of clicks and pops goes up significantly for 44.1 and 88.2, much lower for 48 and 96. This sounds like a difference between internal and external clocks, which would mean that the async is not working right. BUT when using just aplay there is no difference in the rate of clicks and pops with different sample rate. Async is handled in the alsa usb audio driver so it should work the same from either squeezeplay or aplay. I also ran the Touch with my hacked in much newer alsa USB audio driver and got the same results, so I don't think its an issue with the async handling. At this point I'm running out of ideas. 44.1 and 88.2 are much worse than 48 and 96, but I can't figure out why. With aplay I still have clicks and pops, but I don't know where they are comming from, thread/interrupt priorities don't seem to be the issue, neither does buffer size. I also tried different nrpacks and that didn't make any difference to the click/pop behavior. Does anybody else have any thoughts for possible places to look? I'm kind of at a standstill right now. John S. Hi John - Don't know if this will help at all, but here goes. :) On a Mac running Snow Leopard, the Wavelength and many other USB DACs will do the same darn thing (snap! crackle! pop!) when running with player software that runs in what is known as Integer Mode. -Only- when running in Integer mode, and -only- when connected directly to a Mac USB port. Putting a hub (or better yet) a powered hub between the DAC and the Mac removes the problem completely. I have heard from people whose opinion's I generally respect that this is a hardware bug in the USB port on the Mac, and it may well be. But sometimes I wonder. Unfortunately, putting a hub between the SB Touch and the DAC makes no difference at all, even though I fully and completely expected it to. I'm trying to figure out how to turn off the wireless connection and run it totally from ethernet, and vice versa to see if either the wireless or ethernet port if doing bad things to the power line on the USB port, but that is about all I can think of. It is such an achingly beautiful solution and combination that there just has to be an answer somewhere. I am a bit afeared it lies in the hardware though. -Paul -- paul.raulerson paul.raulerson's Profile: http://forums.slimdevices.com/member.php?userid=50346 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Thanks Paul, I dodn't think integer mode has anything to do with it. I'm not a MAC expert but my understanding is that the inner guts of MAC audio processing runs using 32 bit floats. The data in the files and the actual hardware use integers so there is conversion back and forth. My understanding is that integer mode bypasses the internal floating point system and keeps everything in integers so no conversion is necessary. But as to why a hub would have ANY effect on that I have no idea. The touch uses linux which runs in integers unless you jump through a bunch of hoops. I will try a hub, I haven't done that yet. Thanks, John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
JohnSwenson;664168 Wrote: Thanks Paul, I dodn't think integer mode has anything to do with it. I'm not a MAC expert but my understanding is that the inner guts of MAC audio processing runs using 32 bit floats. The data in the files and the actual hardware use integers so there is conversion back and forth. My understanding is that integer mode bypasses the internal floating point system and keeps everything in integers so no conversion is necessary. But as to why a hub would have ANY effect on that I have no idea. The touch uses linux which runs in integers unless you jump through a bunch of hoops. I will try a hub, I haven't done that yet. Thanks, John S. Linux runs in Integer mode? I'll bet you a beer that is the core of the problem then. Just a hunch, I bet it does some kind of USB management or control that smooths out the USB port. Has to be something along that line or a close relative. -Paul -- paul.raulerson paul.raulerson's Profile: http://forums.slimdevices.com/member.php?userid=50346 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
paul.raulerson;663199 Wrote: Now that I said that, I just got a couple pops and clicks from that. Guess I will go play with a couple different cables or put a small hub between the Touch and the DAC and see if that problem will go away. It sounds really really good. (Sans the pop thing.) -Paul Paul. That's the issue. As long as there pops/clicks or better XRUNS (buffer over-/underruns), you can't make use of that potentially great interface. Logitech won't seems to see the potential for selling more units because of that huge potential, by hooking up a great number ( the ones which can live without proprietary drivers) of USB DACs. -- soundcheck ::: ' Touch Toolbox 2.0 and more' (http://soundcheck-audio.blogspot.com) ::: by soundcheck soundcheck's Profile: http://forums.slimdevices.com/member.php?userid=34383 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
soundcheck;663202 Wrote: Paul. That's the issue. As long as there pops/clicks or better XRUNS (buffer over-/underruns) occur, you can't make use of that potentially great interface. It's useless. Logitech won't seems to see the potential for selling more units because of that huge potential, by hooking up a great number ( the ones which can live without proprietary drivers) of USB DACs. Otherwise they'd support us. The pity. They don't respond at all to that subject, even though we offer our support. Cheers Aw well, maybe I can find a cheap Benchmark or some other DAC around that has a really good ASRC interface, or just sounds really really good from S/PDIF. I really like the Touch a lot. Much more than I thought I would. But it sounds wy better through the Proton than with much of anything else. :) -Paul -- paul.raulerson paul.raulerson's Profile: http://forums.slimdevices.com/member.php?userid=50346 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
paul.raulerson;663212 Wrote: Aw well, maybe I can find a cheap Benchmark or some other DAC around that has a really good ASRC interface, or just sounds really really good from S/PDIF. I really like the Touch a lot. Much more than I thought I would. But it sounds wy better through the Proton than with much of anything else. :) -Paul I use a TOUCH connected via S/DIF to a Benchmark DAC I. Very nice, and I've always liked the Benchmark. Mine's an older one (no usb) so you might be able to pick up a used one for a good price -- garym System 1: Vortexbox Appliance 6TB (1.10) SbS 7.6.2 Transporter, Touch, Boom, Radio w/Battery (all ethernet except Radio) System 2: Win7(64) laptop SbS 7.6.2 TouchBenchmark DAC I, Boom, Radio w/Battery (all ethernet except Radio and laptop) Retired: SB3, Duet Receiver Controlled at both locations with: iPhone (iPeng), iPad (iPengHD SqueezePad), CONTROLLER, or SqueezePlay 7.6 on Win7(64) laptop Ripping (FLAC) - dbpoweramp, Additional Tagging - mp3tag garym's Profile: http://forums.slimdevices.com/member.php?userid=17325 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
I'm using my Touch with a Welborne PSU with spdif output to my Camelot Technology Uther 2.0 DAC Mk4 with latest upgrades with very good results. Hope to use soundcheck's soon-to-be-released TT3.0 with it, too. best regards André PS: I agree that being able to use the Touch as an async usb interface would be fantastic. -- reverendo reverendo's Profile: http://forums.slimdevices.com/member.php?userid=32850 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
garym;663237 Wrote: I use a TOUCH connected via S/DIF to a Benchmark DAC I. Very nice, and I've always liked the Benchmark. Mine's an older one (no usb) so you might be able to pick up a used one for a good price I choose the Wavelength with USB only over the Benchmark, but I really do love the Benchmark's sound. I have also heard that the Rega DAC does a bangup job with the Touch too. Wow. :) -Paul -- paul.raulerson paul.raulerson's Profile: http://forums.slimdevices.com/member.php?userid=50346 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Just curious: Anybody out there who tried to play a .wav chunk just by using aplay ? -- soundcheck ::: ' Touch Toolbox 2.0 and more' (http://soundcheck-audio.blogspot.com) ::: by soundcheck soundcheck's Profile: http://forums.slimdevices.com/member.php?userid=34383 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
zoldar;662950 Wrote: hi all, I have been trying to get the touch to output to a MF V-link which bridges to my Moon 300D DAC. I have tried it with the toolbax as well as changing the asound.conf as mentioned for the hrt II. Nu such luck. I either get a touch which goes into a bootup loop or it doesnt play the files. I do detect the vlink on card:1 Any expereinces with this async bridge? I just found this thread a few minutes ago, and now have a Wavelength Proton USB DAC playing just sweet out of new Logitech Touch. It didn't want to give me any sound because this particular DAC has an analog volume control that is set over the USB bus. The wavelength reported inself as Card 1 using aplay -l, so the following command worked to get sound out of the thing. amixer -c 1 cset numid=2 90%,90%,unmute I added the command in the /etc/init.d/rcS startup script, just before it starts squeeze player, and it worked like a charm. Now that I said that, I just got a couple pops and clicks from that. Guess I will go play with a couple different cables or put a small hub between the Touch and the DAC and see if that problem will go away. It sounds really really good. (Sans the pop thing.) -Paul -- paul.raulerson paul.raulerson's Profile: http://forums.slimdevices.com/member.php?userid=50346 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Hi folks. I'm about to implement that USB configuration into my TT3.0. The Toolbox will scan to which interface the USB DAC is being assigned and automatically configures itself. So far it works. At least from the SW side. I use an buspowered Audiopilleo 2 (USB2.0!) for testing . Problem: I won't manage to get it working without XRUNS. I tried 24/32bit all kind of buffersizes. No luck. Any ideas are welcome. Q: Does the USB device need to support 32bit? Cheers P.S: Did anybody hear anything about an usb-audio driver update by Logitech? The one in place ( as well as Alsa) is more than outdated. We had a ticket open some time back. That one got simply ignored by Logitech. -- soundcheck ::: ' Touch Toolbox 2.0 and more' (http://soundcheck-audio.blogspot.com) ::: by soundcheck soundcheck's Profile: http://forums.slimdevices.com/member.php?userid=34383 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
hi all, I have been trying to get the touch to output to a MF V-link which bridges to my Moon 300D DAC. I have tried it with the toolbax as well as changing the asound.conf as mentioned for the hrt II. Nu such luck. I either get a touch which goes into a bootup loop or it doesnt play the files. I do detect the vlink on card:1 Any expereinces with this async bridge? -- zoldar zoldar's Profile: http://forums.slimdevices.com/member.php?userid=50397 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
I followed step by step your instructions. It worked like a charm. My DAC: MF V-DAC [image: http://www.makemoneymakemoney.net/1.jpg] [image: http://www.makemoneymakemoney.net/2.jpg] [image: http://www.makemoneymakemoney.net/5.jpg] -- Edi8th99 Edi8th99's Profile: http://forums.slimdevices.com/member.php?userid=50356 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
JohnSwenson;657978 Wrote:
Sure it can be setup so that the USB and digital out run at the same
time, just use the same scheme as in the normal file. The only problem
is that you won't get anything out AT ALL, if the USB DAC is not
plugged in.
udev is the mechanism by which devices get named. By default your USB
DAC can wind up with different names and card numbers making it
difficult to write asound files, because the names are going to be
different for everybody. There was a udev script posted here a while
back which explicetly looks for any USB audio devices and gives them a
specific name so it's always the same and people can distribute asound
files and have them work on anybodies setup.
Unfortunately it didn't go far enough, the presence of a USB device can
cause the built in DAC or digital out to change THEIR name making any
scheme to have output on two devices at the same time be rather
difficult. This udev script needs to be extended so it names ALL audio
devices, then its much easier since the names will always be the
same.
John S.
Hi John,
I've been trying without any luck to get the USB and SPDIF running at
the same time.
To take this one step at a time, I tried the following asound.conf,
which works fine for USB (ignoring the clicks):
pcm.digital {
type hw;
card TXRX;
}
ctl.digital {
type hw;
card TXRX;
}
pcm.usb {
type hw;
card Series;
}
ctl.usb {
type hw;
card Series;
}
pcm.!default usb
However when I change the above to pcm.!default digital and reboot I
get nothing from the spdif outputs unless I unplug the USB cable prior
to rebooting. Not sure how I'm going to get them both working
simultaneously with this being the case :(
I've also tried the original asound.conf, as per (i think) your
suggesiton, replacing the ak4420 alias with the above usb alias but
when I do this, the squeezebox fails to boot up.
Am I doing something silly ? Any suggestions much appreciated.
Tim
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Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Hi Tim, the problem with the first can be caused by the card numbering. Without a USB DAC the internal speaker is card 2. When the Touch starts it sets the main music to default and the sound effects to card 2. BUT when you add a USB DAC it can renumber things and now your s/pdif out is card 2, so the sound effects go there no matter what the default is set to. You can check this by doing an aplay -l with both the USB DAC connected and without it connected. If this is the case you are going to have to change the card used in the effects channel jive_alsa. Its best to change it to the name of the device (you can see that in the aplay -l) rather than the card number. This can be changed in those same 2 files which are edited to change the buffer size etc. This is also probably what was messing up your attempt at using the original file scheme to have them both play at the same time. IF you are using the custom jive_alsa and setting the type to the other 24 bit format its not going to work either. If thats the case you will want to setup the s/pdif as a plug interface rather than an hw interface. If you are sending the USB DAC the different 24 bit format, then you have a problem because in that case the USB DAC and the s/pdif driver use different formats, so one or the other has to use a plug interface to convert. Since we used the special jive_alsa so we didn't have to use the plug for USB, it would be best to use plug on the s/pdif. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
mjensen;657512 Wrote: 3) Change the realtime priority of audio related processes (optional) The easiest way to do this is the put these 4 lines into /etc/init.d/rcS at the end of the file, just before the last line that initializes squeezeplay. I have chrt -f -p 93 `pidof 'sirq-hrtimer/0'` chrt -f -p 91 `pidof 'sirq-timer/0'` chrt -f -p 87 `pidof 'IRQ-25'` chrt -f -p 59 `pidof 'IRQ-37'` Finally got round to getting the USB up and running again today following a firmware update that wiped it all :( I've now tried adding those 4 lines into the rcS file, but for me it hasn't made any noticable difference, i.e. I still get about the same number of clicks as before. Oh well, worth a try, and I appreciate the tip. I'll be more than willing to try any others as and when they come up :) -- indypants indypants's Profile: http://forums.slimdevices.com/member.php?userid=11608 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Hi everybody !
JohnSwenson;608971 Wrote:
I've GOT it!!
First off thanks to Klaus (soundcheck), his TT 2.0 mods led me where to
find the files needed to make this work.
Also I'd like to thank Kevin at HRT for the loan of the Streamer II. It
would have been very difficult to do this without it.
Quick summary:
use 5 for the buffer size, set sample bits to 32 instead of 24 and
set the asound.conf to use HW mode instead of plug mode.
First off this works for the HRT Music Streamer II, and probably for
other async DACs since many of them were reported to have the same
problems the music streamer had.
First the changes to the asound.conf file:
pcm.usbdac {
type hw;
card 1;
}
ctl.usbdac {
type hw;
card 1;
}
pcm.!default usbdac
This is even simpler than it was before, there is no plug layer. Change
the card num to be whatever your DAC is.
Then there are two files to modify:
/usr/share/jive/applets/SqueezeboxFab4/SqueezeboxFab4Meta.lua
and
/etc/squeezeplay/userpath/settings/SqueezeboxFab4.lua
Type:
cd /usr/share/jive/applets/SqueezeboxFab4
vi SqueezeboxFab4Meta.lua
scroll down to the line that starts with:
alsaPlaybackBufferTime
Change the value to 5. Put the cursor under the left char of the
number, then press the X key until the number is gone. Then type the I
key and type the new number. When done with the new number type the ESC
key.
Scroll down to the alsaSampleSize line. Change the number to 32.
Then find the line with
settings.alsaPlaybackBufferTime
Again set the value to 5
Now type
:wq
Next edit the other file:
cd /etc/squeezeplay/userpath/settings
vi SqueezeboxFab4.lua
change the alsaPlaybackBufferTime to 5 and the alsaSampleSize to
32
:wq
reboot
This will restart and hopefully the async DAC will work now.
One interesting thing I found was that after doing this to get rid of
the ticks and pops, soundcheck's TT 2.0 mods make a huge difference
with the Streamer II. Just don't do the buffer change command, or the
USB change, use the above for those.
These mods shouldn't make any difference to an async interface, but it
does, and its not subtle. This one should be obvious to just about
anybody. I don't know how it will affect other async DACs, but I can
say that with the Streamer II it was major.
Have fun!
John S.
First of all, thank you for your job.
I had Klaus's mod but did not achieve to get the USB work properly...
Thanks to you it is Ok now.
My Dac is the Audio GD NFB 1WM. I did not make serious tests but I
think the USB input outpasses the SPDIF one.
For Windows users, I suggest to use WinScp to edit / create the files.
(copy / paste is possible)
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Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
There are a couple issues here, SBS is not designed for DSD data, it is only designed to handle PCM data. IF the DSD data can be persuadewd to masquerade as PCM data then SBS might be able to handle it. This is how you play DTS data over a squeezebox. The next issue is the USB protocol, DSD over USB is a proprietary protocol with an ASIO driver compiled for windows and MAC, no linux support that I am aware of. The manufacturer would have to provide a ALSA driver that implements this protocol. IF (and this is a BIG if) this protocol was designed to mimic standard PCM USB protocol then it might be theoretically possible to make this work. The DSDIFF file would be converted into some standard lossless PCM format such as wav or flac, then SBS would be happy to handle it and send it to what it thinks is a regular USB DAC, BUT the DAC knows that the data is not actually PCM but DSD and uses that data differently. But even if that were the case it would not work with this specific DAC because it uses a custom PCM USB driver which only exists on windows and MAC, not linux, so there is no way the Touch can even send PCM data over USB to this DAC. So using this specific DAC with the Touch using USB is not going to happen, period. This is something that a manufacturer must understand, if they choose to use a custom protocol, they must supply drivers for that protocol on the hardware their users are going to use. You as a buyer of this DAC must also be aware of that limitation. That there will be some hardware the DAC will not work with and that was a deliberate choice by the manufacturer. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
mjensen;657782 Wrote:
Hi Tim,
So you can have something like this in asound.conf.
pcm.usbdac {
type hw;
card Series;
}
ctl.usbdac {
type hw;
card Series;
}
pcm.!default usbdac
QUOTE]
Pretty much, except I'm specifying card 0 rather than card Series. I'm
trying to remember now why I didn't use the name...? I have a feeling
there was a reason. I must make some time this weekend to go through
all this again and have a bash at your suggestions.
I'm curious as to what your pcm.digital and ctl.digital sections doing
(if it can be explained in terms that an idiot can understand!).
Getting ahead of myself, it would be really nice if the coax didn't
deactivate when swicthing to USB. That way I could also connect it to
my AV amp for playing DTS files or pro-logic. I see this as the next
big challenge for you guys once the clicks have been resolved :-))
BTW, I won't pretend I understand most of this... for the most part,
I've just been following instructions !
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Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
indypants;657967 Wrote: Getting ahead of myself, it would be really nice if the coax didn't deactivate when swicthing to USB. That way I could also connect it to my AV amp for playing DTS files or pro-logic. I see this as the next big challenge for you guys once the clicks have been resolved :-)) BTW, Not sure ehat you mean by udev... I won't pretend I understand most of this; for the most part, I've just been following instructions ! Sure it can be setup so that the USB and digital out run at the same time, just use the same scheme as in the normal file. The only problem is that you won't get anything out AT ALL, if the USB DAC is not plugged in. udev is the mechanism by which devices get named. By default your USB DAC can wind up with different names and card numbers making it difficult to write asound files, because the names are going to be different for everybody. There was a udev script posted here a while back which explicetly looks for any USB audio devices and gives them a specific name so it's always the same and people can distribute asound files and have them work on anybodies setup. Unfortunately it didn't go far enough, the presence of a USB device can cause the built in DAC or digital out to change THEIR name making any scheme to have output on two devices at the same time be rather difficult. This udev script needs to be extended so it names ALL audio devices, then its much easier since the names will always be the same. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
indypants;657761 Wrote: Hi Mjensen, First of all, thanks for sharing that info, it is very much appreciated. I've already got John's updated jive_alsa and also own the 8200CDQ DAC, but so far I still get the odd click coming through. Looking through your summary of changes, the thing that stands out that I've not yet tried is part (3), so I will be giving this a go when I get some time (and once I've figured out why USB doesn't seem to work at all since I downloaded the last official firmware upgrade :-( ). Your asound.conf updates also look quite different to the changes recommended by John, but would I be correct that this just a different way of achieving the same result? Cheers, Tim Interested in how people are using their USB Dacs - is it the only device attached? It does sound that the audiolab stuff doesn't work in async mode at present, I'm wondering about getting one and looking at the touch code. How frequent are the dropouts at present? [John did you ever just build the image with a newer alsa - I was thinking this may work for a usb only case?] -- Triode Triode's Profile: http://forums.slimdevices.com/member.php?userid=17 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Hi, It is possible to read SACD images by PS3 and extract DSD files. One can convert them to PCM but there are now some DSD-capable USB DAC's An example of MyTek Stereo192-DSD-DAC: http://mytekdigital.com/download_library/stereo192-dsd-dac_new_product_release_july_2011.pdf The DSDIFF files (*.dff) are tag-able and could be processed by SB Server. If we had the ability to output them via SB Touch USB interface we would be able to bypass the SACD player at all. I believe the asynchronous USB interface with DAC re-clocking may really reduce the transport jitter and I can imagine even the laptop with Foobar to replace SB Touch. There is one thing which makes me stay with SB Touch - the iPad+iPeng+SB Server - this is amazing way to control my music. I'd like this set to include DSD playback via USB to DSD-capable USB DAC. For me this is the future. Do you think SB Touch can be modified to achieve this ? -- KarolG KarolG's Profile: http://forums.slimdevices.com/member.php?userid=33616 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
On Sep 15, 2011, at 5:39 PM, KarolG wrote: For me this is the future. Do you think SB Touch can be modified to achieve this ? It's open source, have at it. :) SACD isn't really the future though, it's the past. Blu-ray is the future now, and then whatever comes next... ;) ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
I meant multi format DAC rather than SACD itself. I just want to play everything I can get. What matters is the mastering. The best digital version available may be DCC Gold (CD), MoFi SACD layer, HDTracks download or even good vinyl rip. The future for me is to be able to play it all. It would be just great if it was possible with SB Touch as a transport. -- KarolG KarolG's Profile: http://forums.slimdevices.com/member.php?userid=33616 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Hi Mjensen, First of all, thanks for sharing that info, it is very much appreciated. I've already got John's updated jive_alsa and also own the 8200CDQ DAC, but so far I still get the odd click coming through. Looking through your summary of changes, the thing that stands out that I've not yet tried is part (3), so I will be giving this a go when I get some time (and once I've figured out why USB doesn't seem to work at all since I downloaded the last official firmware upgrade :-( ). Your asound.conf updates also look quite different to the changes recommended by John, but would I be correct that this just a different way of achieving the same result? Cheers, Tim -- indypants indypants's Profile: http://forums.slimdevices.com/member.php?userid=11608 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Hi Tim,
Isn't the 8200 on card1 and you have a symbolic link named Series to
that. If you do
# ls -l /proc/asound
you will have
lrwxrwxrwx1 root root 5 Sep 14 21:25 TXRX - card0
lrwxrwxrwx1 root root 5 Sep 14 21:25 Series -
card1
So you can have something like this in asound.conf.
pcm.usbdac {
type hw;
card Series;
}
ctl.usbdac {
type hw;
card Series;
}
pcm.!default usbdac
Or are you going through udev to get a specific alsa number?
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Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
The changes I did to get the Zodiac+ working with the touch is this
1) Change /etc/asound.conf to use the usb dac. My asound.conf now looks
like this
pcm.digital {
type hw;
card TXRX;
}
ctl.digital {
type hw;
card TXRX;
}
pcm.usb {
type hw;
card Zodiac;
}
ctl.digital {
type hw;
card Zodiac;
}
pcm.!default usb
I have been using usb for a month now, but can always go back to spdif
by changing the last line in the file.
2) Install the modified version of jive_alsa
Go to /usr/bin. Take a copy of the original jive_alsa and replace it
with the modified one.
# cd /usr/bin
# ls -l jive*
-rwxr-xr-x1 root root 1763712 Jan 1 1970 jive
-rwxr-xr-x1 root root48844 Aug 17 21:02 jive_alsa
-rwxr-xr-x1 root root40672 Jan 1 1970 jive_alsa.orig
(I assume john's changes are the same as mine)
3) Change the realtime priority of audio related processes (optional)
The easiest way to do this is the put these 4 lines into
/etc/init.d/rcS at the end of the file, just before the last line that
initializes squeezeplay.
I have
chrt -f -p 93 `pidof 'sirq-hrtimer/0'`
chrt -f -p 91 `pidof 'sirq-timer/0'`
chrt -f -p 87 `pidof 'IRQ-25'`
chrt -f -p 59 `pidof 'IRQ-37'`
4) Change the buffer size to 5us.
If you want to do this manually, you will need to change the parameter
named alsaPlaybackBufferTime in the lua files
/usr/share/jive/applets/SqueezeboxFab4/SqueezeboxFab4Meta.lua
/etc/squeezeplay/userpath/settings/SqueezeboxFab4.lua
If you are using soundcheck's shell scripts, just change the script
named ttbuffer to accept a value of 5 (change the variable MAXBUF
to 5) and run it like this
# ttbuffer 5
The touch will now reboot and hopefully everything works as planned
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Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
tufty;656965 Wrote: I too have the 8200CDQ and I'd be interested in giving your modified program a try! I'll send you the program. There is a lot of other stuff that needs to be done as well, several files need to be edited and for best results the udev script mentioned in this thread needs to be loaded. Most of the information is in my posts in this thread. Right now I don't have time to get all the informaion together. I'll see if its already in one place. Ideally this should be put together in some automation like soundchek's stuff, but at the moment its all manual. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
JohnSwenson;656040 Wrote: Its not the asynchronous, that actually works fine, the big issue is 24 bit over USB. Most USB DACs use a different 24 bit format than the one the Touch uses, which either means a translation step, or a modified program on the Touch to send 24 bit in the right format to the DAC. (I have the program if anyone wants it). I too have the 8200CDQ and I'd be interested in giving your modified program a try! -- tufty tufty's Profile: http://forums.slimdevices.com/member.php?userid=47700 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
I am using usb out from the Touch to a Antelope ZODIAZ+, and it sounds pretty good. I am not using plug, so I had to change jive_alsa to support S24_LE (The zodia only accepts S24_LE), changed the buffer size to 5, and real time priotity of relevant processes (from the defalt of 45 I think they were). -- mjensen mjensen's Profile: http://forums.slimdevices.com/member.php?userid=49596 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Sorry S24_3LE, but I guess you already knew that ;-) -- mjensen mjensen's Profile: http://forums.slimdevices.com/member.php?userid=49596 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
I already have a modified jive_alsa if anybody wants it. Are you getting any clicks or pops? With the HRT streamer in 24 bit mode I would still occasionally gets some clicks, even when changing thread priorities. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
reverendo;655632 Wrote: Hi there, is there any update regarding the async output from the Touch? It would be a fantastic mod and I (and probably many others) would consider donating if necessary in order to get it done. best regards André Its not the asynchronous, that actually works fine, the big issue is 24 bit over USB. Most USB DACs use a different 24 bit format than the one the Touch uses, which either means a translation step, or a modified program on the Touch to send 24 bit in the right format to the DAC. (I have the program if anyone wants it). Even then you can still wind up with clicks occasionally. Careful adjustment of buffer and thread priorities can help a lot but even then may not be enough. If your DAC supports 16 bit mode I can give you the settings to play that. This seems to work very well on pretty much anything. Of course that means that if playing CD music you will need to have the volume controll set all the way up otherwise you will loose bits. And a 24 bit original file will have bits dropped. But if dealing with CD music 16 bit mode works very well. It still needs some more time to find out whats really going on here to come up with a solution that will work well with all 24 bit implementations. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Instructions for connecting USB DAC to Touch
Hi John, I get no clicks or pops on 24bit source. It's with the original driver. -- mjensen mjensen's Profile: http://forums.slimdevices.com/member.php?userid=49596 View this thread: http://forums.slimdevices.com/showthread.php?t=82110 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
