[Alsa-user] VT1708 HD audio limitations?
I have been trying to get this to play HD audio files at 24 bit depth and it won’t at any sample rate including 44.1 KHz. The driver seems to be 16 bit only but the chipset is capable of 24 bit audio. How do I configure asound.conf or tweak the driver to resolve this? (It’s a similar but not identical problem to the one I’m having with the ICE1724) 1audio No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.7/1286 - Release Date: 2/18/2008 6:49 PM - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
[Alsa-user] High sample rate audio problems with Juli@ ICE1724
I’m trying to configure Alsa to send high definition audio files, 2 channel, 176.4 KHz/24 bit depth to the digital output of the card. I know the hardware can do it correctly, I have confirmed that in Windows and confirmed the stream with the external DAC. In Alsa no matter what I try the stream gets down converted to 88.2 KHz. Is this an Alsa limitation or a driver issue? How do I work around this? I don’t need dmix since it’s a single purpose music player and noting but the selected stream should come out of the box. A direct to hardware route with be the best option. 1audio No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.7/1286 - Release Date: 2/18/2008 6:49 PM - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Need help with asound.conf
>> For me, hw:0,1 is the SPDIF connector, so I just put this in >> /etc/asound.conf: >> >> defaults.pcm.card 0 >> defaults.pcm.device 1 >> > What if I need a more generic version of asound.conf so it works without > changes on machines where spdif is hw:0,2 ? I'm certainly no expert, but to do this you may need to find the config file in /usr/share/alsa/ that implements dmix (perhaps pcm/dmix.conf) or anything that refers to defaults.pcm.card (or defaults.pcm.dmix.card) and change that to pcm.spdif or whichever device you want to become the default. >> You can also set this if you want something other than 48kHz: >> >> defaults.pcm.dmix.rate 48000 >> > I'm trying to make sense of the files in /usr/share/alsa and extrapolate > the language so I can understand the flow and write an entire > asound.conf script, but I was thinking there's a simpler way to do this, > since the "spdif" pcm is already pointing to the right device. Changing all references from the default PCM device to the SPDIF device should work, but again, I'm not an expert at this :-) Cheers, Adam. - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Need help with asound.conf
Adam Nielsen wrote: The problem is that I can't hear two concurrent audio streams at the same time when using the default device. I tried setting things up using dmix, but failed miserably. Any ideas what to do to make two applications play simultaneously through spdif based on this configuration? (It's mainly to get Flash to play through S/PDIF). The default ALSA config dmixes everything at 48kHz so you shouldn't need to set that explicitly. All you should need to do is tell dmix to output via SPDIF. I wrote this asound.conf because for some reason ALSA used 44.1KHz and the sound card was locked to 48KHz, resulting in a very annoying artifact. The idea was to force it to covert everything to 48KHz when using spdif. For me, hw:0,1 is the SPDIF connector, so I just put this in /etc/asound.conf: defaults.pcm.card 0 defaults.pcm.device 1 What if I need a more generic version of asound.conf so it works without changes on machines where spdif is hw:0,2 ? You can also set this if you want something other than 48kHz: defaults.pcm.dmix.rate 48000 I'm trying to make sense of the files in /usr/share/alsa and extrapolate the language so I can understand the flow and write an entire asound.conf script, but I was thinking there's a simpler way to do this, since the "spdif" pcm is already pointing to the right device. Make sure you use Flash >= 9 for ALSA support. Of course :) I'm using Ubuntu 7.10 BTW. Thanks, Radu - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
[Alsa-user] Step-by-step configuring/testing a sound card
Hi all, geting my sound card work has been confusing for me. There are many forum threads, but none helps. More, maybe i've messed up with the good config part following those instructions, who knows ... Can somebody tell me a "linear" step-by-step method of configuring/testing a sound card? In my Linux box i do: root%aplay -vv song.wma ALSA lib pcm_dmix.c:864:(snd_pcm_dmix_open) unable to open slave aplay: main:550: audio open error: Device or resource busy My system: Debian 2.6.18.dfsg.1-18etch1 root%cat /proc/asound/card0/codec#* | grep Codec Codec: Generic 11c1 Si3054 Codec: Analog Devices AD1986A root% lspci | grep Audio 00:14.2 Audio device: ATI Technologies Inc SB450 HDA Audio (rev 01) root%lshw ... description: Audio device product: SB450 HDA Audio vendor: ATI Technologies Inc physical id: 14.2 bus info: [EMAIL PROTECTED]:14.2 version: 01 width: 64 bits clock: 33MHz capabilities: bus_master cap_list configuration: driver=HDA Intel latency=64 resources: iomemory:d040-d0403fff irq:209 root% lsmod|grep ^snd snd_hda_intel 17332 1 snd_hda_codec 137856 1 snd_hda_intel snd_pcm_oss38368 1 snd_mixer_oss 15200 1 snd_pcm_oss snd_pcm68676 3 snd_hda_intel,snd_hda_codec,snd_pcm_oss snd_timer 20996 1 snd_pcm snd47012 6 snd_hda_intel,snd_hda_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer snd_page_alloc 10184 2 snd_hda_intel,snd_pcm Many questions like this can be found, but no solution (at least for me). Thanks. - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
