Re: [PD] Best PD+OS/Hardware combinations for low audio latency?
So far, in Windows: I tried setting the priority to Realtime in the Task Manager and setting the buffer size to smaller in the Control Panel settings for the Edirol soundcard, but could only get the delay in PD's audio settings down to 40 ms. Anything below that destroys the sound (in a bad way). that is a known issue ... pd is using pablio on osx and windo$, which is unable to achieve decent latencies ... the devel_ branch contained a workaround for that, not sure about the recent vanilla release ... I'll try the linux suggestions next... good idea, the pd's audio driver access on linux is not as broken as on other platforms ... t -- [EMAIL PROTECTED] http://tim.klingt.org Silence is only frightening to people who are compulsively verbalizing. William S. Burroughs ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Best PD+OS/Hardware combinations for low audio latency?
Have you tried running Pd using Jack osx and Jack mode? I can get latency down to 7ms without crackles - this is on a meager old g4 powerbook best On 1 Apr 2008, at 09:18, Tim Blechmann wrote: So far, in Windows: I tried setting the priority to Realtime in the Task Manager and setting the buffer size to smaller in the Control Panel settings for the Edirol soundcard, but could only get the delay in PD's audio settings down to 40 ms. Anything below that destroys the sound (in a bad way). that is a known issue ... pd is using pablio on osx and windo$, which is unable to achieve decent latencies ... the devel_ branch contained a workaround for that, not sure about the recent vanilla release ... I'll try the linux suggestions next... good idea, the pd's audio driver access on linux is not as broken as on other platforms ... t -- [EMAIL PROTECTED] http://tim.klingt.org Silence is only frightening to people who are compulsively verbalizing. William S. Burroughs ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Best PD+OS/Hardware combinations for low audio latency?
Have you tried running Pd using Jack osx and Jack mode? pd's jack backend should perform way better than the coreaudio backend ... I can get latency down to 7ms without crackles - this is on a meager old g4 powerbook 7ms measured round-trip or setting in pd's audio dialog (which is merely a suggestion for the driver and iirc is completely ignored by the jack backend) tim -- [EMAIL PROTECTED] http://tim.klingt.org Who need fossil fuel when the sun ain't goin' nowhere Amiri Baraka signature.asc Description: This is a digitally signed message part smime.p7s Description: S/MIME cryptographic signature ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Best PD+OS/Hardware combinations for low audio latency?
7ms measured round-trip or setting in pd's audio dialog (which is merely a suggestion for the driver and iirc is completely ignored by the jack backend) well i set the buffer size in Jack prefs and let Pd follow suit. But either way its just better :) tim -- [EMAIL PROTECTED] http://tim.klingt.org Who need fossil fuel when the sun ain't goin' nowhere Amiri Baraka ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Best PD+OS/Hardware combinations for low audio latency?
with asio on windows vista and a phonic firewire console I can set pd buffer size to 4ms without sound crackles, and obviously the driver buffer is set to 2ms, like I said before, again, the soundcard driver must be half the size of pd buffer or less. Jack on windows isn't available yet. Tim Blechmann a écrit : Have you tried running Pd using Jack osx and Jack mode? pd's jack backend should perform way better than the coreaudio backend ... I can get latency down to 7ms without crackles - this is on a meager old g4 powerbook 7ms measured round-trip or setting in pd's audio dialog (which is merely a suggestion for the driver and iirc is completely ignored by the jack backend) tim -- [EMAIL PROTECTED] http://tim.klingt.org Who need fossil fuel when the sun ain't goin' nowhere Amiri Baraka ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
[PD] Best PD+OS/Hardware combinations for low audio latency?
I want desperately to be able to process guitar in real time with PD. I have a Sony VAIO laptop and Edirol FA-66 Firewire soundcard. It seems that using Windows is not an option, since I get outrageously high audio latency with PD, and a search through the mail list archives suggests that the consensus is that this is unavoidable in Windows. I'm trying to get the FA-66 working with Ubuntu, but I'm not quite smart enough to understand how to do this. What I'm wondering is: 1. What OS/hardware combinations have you found to result in low audio latency with PD? 2. Isit possible to accomplish this with Ubuntu and the FA-66, or should I give up and try something else? 3. If it is possible with Ubuntu, are there other resources for figuring this out, other than stumbling through web forums that assume I understand more than I do? Thanks for your help! Joe ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Best PD+OS/Hardware combinations for low audio latency?
On Sun, 2008-03-30 at 12:30 -0700, Joe Newlin wrote: I want desperately to be able to process guitar in real time with PD. cool! I have a Sony VAIO laptop and Edirol FA-66 Firewire soundcard. It seems that using Windows is not an option, since I get outrageously high audio latency with PD, and a search through the mail list archives suggests that the consensus is that this is unavoidable in Windows. definitely not true. it certainly depends on what you consider high latency. on windows with pd running on my built-in audio card, i could use a buffersize of 14ms (in the pd media dialog, didn't measure the actual round-trip). this might be too much for real-time processing a live signal. however, with the hdsp rpm soundcard i could go down to 3ms (still on windows). on linux (with old ubuntu dapper) i can go a bit lower with both cards. (128samples buffer for jack, when running on the hdsp without x-runs) without really knowing, i am tempted to say, that good hardware and well-written drivers are more latency critical than the os. on windows i had good experience with hdsp and motu cards. I'm trying to get the FA-66 working with Ubuntu, but I'm not quite smart enough to understand how to do this. not that i am an expert, but from what i heard, firewire audio seems to be harder to set up. don't know about the fa-66 in particular, but with a decent linux os (ubuntu gutsy) and no fear to compile the necessary driver yourself (freebob or.. what's its successor called again..?), quite a lot of the fw cards are supported nowadays (i heard that someone got a motu 824 card running). What I'm wondering is: 1. What OS/hardware combinations have you found to result in low audio latency with PD? ubuntu gutsy has a linux-rt package in its distro. setting up a system optimized for audio should be quite easy on gutsy (at least from my experience). check, if the new ffado driver (i think that's how it's called) supports your card. regarding decent audio hardware, i am pretty much in favor of the hdsp series. those are also pretty well supported under linux. 2. Isit possible to accomplish this with Ubuntu and the FA-66, or should I give up and try something else? i just checked the ffado supported harware page and your card is listed: http://www.ffado.org/?q=devicesupport/list 3. If it is possible with Ubuntu, are there other resources for figuring this out, other than stumbling through web forums that assume I understand more than I do? i never tried installing a ffado driver myself. personally, i would try to compile it myself. but probably you find an external repository for gutsy, that provides those drives as a package. hope this helps. roman ___ Der frühe Vogel fängt den Wurm. Hier gelangen Sie zum neuen Yahoo! Mail: http://mail.yahoo.de ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Best PD+OS/Hardware combinations for low audio latency?
Hello, did you try to reduce buffer size of your soundcard and then reduce buffer size in pd, and set pd to realtime in windows task manager? Also, did you try freebob+jackd+low-latency kernel combination in ubuntu? Joe Newlin a écrit : I want desperately to be able to process guitar in real time with PD. I have a Sony VAIO laptop and Edirol FA-66 Firewire soundcard. It seems that using Windows is not an option, since I get outrageously high audio latency with PD, and a search through the mail list archives suggests that the consensus is that this is unavoidable in Windows. I'm trying to get the FA-66 working with Ubuntu, but I'm not quite smart enough to understand how to do this. What I'm wondering is: 1. What OS/hardware combinations have you found to result in low audio latency with PD? 2. Isit possible to accomplish this with Ubuntu and the FA-66, or should I give up and try something else? 3. If it is possible with Ubuntu, are there other resources for figuring this out, other than stumbling through web forums that assume I understand more than I do? Thanks for your help! Joe ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Best PD+OS/Hardware combinations for low audio latency?
Thanks for the reply. I'm hoping you'll help me clarify a few things. 1. this is how i start pd - does this mean selecting Startup from the File menu and typing -nosleep -rt -audiobuf 64 -jack in the Startup Flags field? Do I do this after the flags that are already there? yes, using the pg gui (file - startup, apply, save) or editing defaults.pdsettings (in /usr/local/lib/pd) or .pdsettings in your home folder. this is on linux, i don't know how windows works. 2. play with priority in Linux - I have no idea how to play with anything in Linux. I search the English pd-list for limits.conf, and found 1 thread, which did not seem to have the information I need. Can you please tell me what specifically I need to do with limits.conf? (And where is it located?) oups, my bad - it's located in /etc/security/limits.conf add thoses lines: @audio - nice -10 @audio - rtprio 99 @audio - memlock unlimited then yu should add yourself to the audio group. restart your computer. 3. I'm trying to use qjackctl. I enter Setup, and choose freebob as the driver. But I'm not sure how my firewire card is designated (plughw:0?). Or if it's even recognized by the OS. this is a little bit more complicated. i suggest you look on google for post on this subject (for your audio card). you can use gscanbus to see if you soundcard if detected. but yes, basically in setup you checked Realtime, choose Freebob, interface default, frames / period (start with a big latency = 1024). Again, thanks for the reply. Linux is a little over my head, and I desperately want this to work! good luck, from time to time i am on #dataflow (irc.freenode.net). pat ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Best PD+OS/Hardware combinations for low audio latency?
Thanks for all the replies. So far, in Windows: I tried setting the priority to Realtime in the Task Manager and setting the buffer size to smaller in the Control Panel settings for the Edirol soundcard, but could only get the delay in PD's audio settings down to 40 ms. Anything below that destroys the sound (in a bad way). And that's just for pure computer music, without even attempting to process a signal from the adc~. I'll try the linux suggestions next... JN On Sun, Mar 30, 2008 at 12:30 PM, Joe Newlin [EMAIL PROTECTED] wrote: I want desperately to be able to process guitar in real time with PD. I have a Sony VAIO laptop and Edirol FA-66 Firewire soundcard. It seems that using Windows is not an option, since I get outrageously high audio latency with PD, and a search through the mail list archives suggests that the consensus is that this is unavoidable in Windows. I'm trying to get the FA-66 working with Ubuntu, but I'm not quite smart enough to understand how to do this. What I'm wondering is: 1. What OS/hardware combinations have you found to result in low audio latency with PD? 2. Isit possible to accomplish this with Ubuntu and the FA-66, or should I give up and try something else? 3. If it is possible with Ubuntu, are there other resources for figuring this out, other than stumbling through web forums that assume I understand more than I do? Thanks for your help! Joe ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Best PD+OS/Hardware combinations for low audio latency?
Joe, I also use an FA-66 on Ubuntu Ubuntu Studio 7.10. There are many others using this combination. Although the firewire interfaces don't work straight out of the box, the required procedures are available in the Ubuntu forums. From what I've seen, techniques in reducing latency under other audio apps with Ubuntu + FA-66 discussed there also apply to Pd. -- David Shimamoto ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Best PD+OS/Hardware combinations for low audio latency?
Hi, Joe Newlin a écrit : Thanks for all the replies. So far, in Windows: I tried setting the priority to Realtime in the Task Manager and setting the buffer size to smaller in the Control Panel settings for the Edirol soundcard, but could only get the delay in PD's audio settings down to 40 ms. Anything below that destroys the sound (in a bad way). And that's just for pure computer music, without even attempting to process a signal from the adc~. The minimum asio buffer size of your firewire device needs to have half of the value in Puredata audio setting. I'll try the linux suggestions next... Linux will certainly make easier to try all features of PureData JN On Sun, Mar 30, 2008 at 12:30 PM, Joe Newlin [EMAIL PROTECTED] wrote: I want desperately to be able to process guitar in real time with PD. I have a Sony VAIO laptop and Edirol FA-66 Firewire soundcard. It seems that using Windows is not an option, since I get outrageously high audio latency with PD, and a search through the mail list archives suggests that the consensus is that this is unavoidable in Windows. I'm trying to get the FA-66 working with Ubuntu, but I'm not quite smart enough to understand how to do this. What I'm wondering is: 1. What OS/hardware combinations have you found to result in low audio latency with PD? 2. Isit possible to accomplish this with Ubuntu and the FA-66, or should I give up and try something else? 3. If it is possible with Ubuntu, are there other resources for figuring this out, other than stumbling through web forums that assume I understand more than I do? Thanks for your help! Joe ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Best PD+OS/Hardware combinations for low audio latency?
Joe Newlin a écrit : I'd love to know specifically how you get the FA-66 to work on Ubuntu. maybe if you give a try with ubuntu studio, you will get freebob working good with qjackctl and pd I'm not even to the point of tweaking latency in Ubuntu yet - I need to get the soundcard to work first. Previous Ubuntu forum posts are not been helpful, but I've started one of my own to try to get answers there as well. On Sun, Mar 30, 2008 at 3:27 PM, PSPunch [EMAIL PROTECTED] wrote: Joe, I also use an FA-66 on Ubuntu Ubuntu Studio 7.10. There are many others using this combination. Although the firewire interfaces don't work straight out of the box, the required procedures are available in the Ubuntu forums. From what I've seen, techniques in reducing latency under other audio apps with Ubuntu + FA-66 discussed there also apply to Pd. -- David Shimamoto ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Best PD+OS/Hardware combinations for low audio latency?
hi, search the archive for low latency on windows (playing with priority). but of course i recommand you to switch to linux with a realtime kernel. i have a firepod (firewire soundcard - using freebob / ffado) and my latency is very low, it's around 7 ms. this is how i start pd -nosleep -rt -audiobuf 64 -jack jack audio connection kit (low latency for soundcard). you will need to play with priority in linux too (/etc/limits.conf - search the archive). i would recommand to uninstall or disable updatedb. use qjackctl to simplify your life. pat - Original Message - From: Joe Newlin [EMAIL PROTECTED] To: pd-list pd-list@iem.at Sent: Sunday, March 30, 2008 2:30 PM Subject: [PD] Best PD+OS/Hardware combinations for low audio latency? I want desperately to be able to process guitar in real time with PD. I have a Sony VAIO laptop and Edirol FA-66 Firewire soundcard. It seems that using Windows is not an option, since I get outrageously high audio latency with PD, and a search through the mail list archives suggests that the consensus is that this is unavoidable in Windows. I'm trying to get the FA-66 working with Ubuntu, but I'm not quite smart enough to understand how to do this. What I'm wondering is: 1. What OS/hardware combinations have you found to result in low audio latency with PD? 2. Isit possible to accomplish this with Ubuntu and the FA-66, or should I give up and try something else? 3. If it is possible with Ubuntu, are there other resources for figuring this out, other than stumbling through web forums that assume I understand more than I do? Thanks for your help! Joe ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
