enlarging system audio buffers?

From: Ralf Fassel (ralfixx_at_gmx.de)
Date: 07/26/05 

Date: Tue, 26 Jul 2005 11:01:51 +0200

[repost from alt.os.linux.suse]

This must be something simple...
I'm looking for a way to permanently increase the audio buffer size
for recording.

With the built-in soundcard snd_intel8x0, I found that I can do as
root
  echo 128 > /proc/asound/card0/pcm0c/sub0/prealloc
to get a 128 kB recording buffer, but I need more (1-2seconds at 48kHz
stereo, >192-300kB), and I need it to persist across reboots.

Is this something to set in some ALSA config file? If yes, which
parameter in which sub-structure in which file? The ALSA-Docs confuse
me since they go in such great detail that I don't even know which
parameter to look for.

Kernel is Suse 9.1 (Linux 2.6.5-7.155.29-default, ALSA 1.0.3) and/or
Suse 9.3 (Linux 2.6.11.4-21.7-smp, ALSA 1.0.9).

Any hints welcome.

Thanks...
R'

Relevant Pages

  • suse 9.3: enlarging system audio recording buffer?
    ... I'm looking for a way to permanently increase the audio buffer size ... With the built-in soundcard snd_intel8x0, I found that I can do as ... to get a 128 kB recording buffer, but I need more, and I need it to ... Is this something to set in some ALSA config file? ...
    (alt.os.linux.suse)
  • Re: suse 9.3: enlarging system audio recording buffer?
    ... > I'm looking for a way to permanently increase the audio buffer size ... > to get a 128 kB recording buffer, but I need more, and I need it to ... > Is this something to set in some ALSA config file? ...
    (alt.os.linux.suse)