>> Aibara Iduas  wrote on 2010-12-06:     #89
   * pulseverbose.log (151.1 KiB, text/plain)


(  10.906|   0.000) D: source.c: Processing rewind...
(  12.662|   1.755) W: ratelimit.c: 16 events suppressed
(  12.662|   0.000) I: alsa-sink.c: Underrun!
(  13.279|   0.616) D: sink-input.c: Requesting rewind due to corking
(  13.279|   0.000) D: module-suspend-on-idle.c: Sink alsa_output.default 
becomes idle, timeout in 5 seconds.
(  13.316|   0.036) D: sink-input.c: Requesting rewind due to uncorking
(  13.316|   0.000) D: alsa-sink.c: Requested to rewind 1760 bytes.
(  13.316|   0.000) D: alsa-sink.c: Limited to 1440 bytes.
(  13.316|   0.000) D: alsa-sink.c: before: 360
(  13.316|   0.000) D: alsa-sink.c: after: 360
(  13.316|   0.000) D: alsa-sink.c: Rewound 1440 bytes.
(  13.316|   0.000) D: sink.c: Processing rewind...
(  13.316|   0.000) D: source.c: Processing rewind...
(  13.317|   0.000) D: module-suspend-on-idle.c: Sink alsa_output.default 
becomes busy.
(  13.322|   0.005) D: protocol-native.c: Requesting rewind due to rewrite.
(  13.322|   0.000) D: alsa-sink.c: Requested to rewind 1760 bytes.
(  13.322|   0.000) D: alsa-sink.c: Limited to 1440 bytes.
(  13.322|   0.000) D: alsa-sink.c: before: 360
(  13.322|   0.000) D: alsa-sink.c: after: 360
(  13.322|   0.000) D: alsa-sink.c: Rewound 1440 bytes.
(  13.322|   0.000) D: sink.c: Processing rewind...
(  13.322|   0.000) D: sink-input.c: Have to rewind 1440 bytes on render 
memblockq.
(  13.322|   0.000) D: sink-input.c: Have to rewind 1440 bytes on implementor.
(  13.322|   0.000) D: source.c: Processing rewind...
(  13.323|   0.000) D: protocol-native.c: Underrun on ''I Got It Bad and That 
Ain't Go' by 'Billie Holiday'', 0 bytes in queue.


It is underrun because snd_pcm_rewind() can only rewind to period boundary for 
those drivers which use snd_pcm_indirect_playback_transfer() since the audio 
has already been transferred from system memory to DSP's internal memory

your card should allow you to run multiple oss playback applications

Does "mplayer -ao oss any.wav" give your bad sound ?

**** List of PLAYBACK Hardware Devices ****
card 0: CS46xx [Sound Fusion CS46xx], device 0: CS46xx [CS46xx]
  Subdevices: 30/31
card 0: CS46xx [Sound Fusion CS46xx], device 1: CS46xx - Rear [CS46xx - Rear]
  Subdevices: 31/31
card 0: CS46xx [Sound Fusion CS46xx], device 2: CS46xx - IEC958 [CS46xx - 
IEC958]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: CS46xx [Sound Fusion CS46xx], device 3: CS46xx - Center LFE [CS46xx - 
Center LFE]
  Subdevices: 31/31


or

try pulseaudio-0.9.14

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https://bugs.launchpad.net/bugs/428619

Title:
  [cs46xx] Need tweaks to daemon.conf to eliminate crackle/distortion

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