[ALSA - utils 0001990]: aplay/arecord cannot play/capture A_LAW

[bugtrack@alsa-project.org]

A NOTE has been added to this issue.
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<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1990> 
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Reported By:                Raymond
Assigned To:                
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Project:                    ALSA - utils
Issue ID:                   1990
Category:                   aplay/arecord
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
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Date Submitted:             04-01-2006 04:26 CEST
Last Modified:              04-10-2006 16:52 CEST
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Summary:                    aplay/arecord cannot play/capture A_LAW
Description: 
aplay/arecord can play MU_LAW and the sound card support MU_LAW and A_LAW

arecord -D hw:0,0 -f MU_LAW -t au -c 1 -r 8000 test.au

aplay -D hw:0,0 test.au


Try to use -t raw but the quality of A_LAW is very bad when compare with
MU_LAW

arecord -D hw:0,0 -f A_LAW -t raw -c 1 -r 8000 test.raw

aplay -D hw:0,0 test.raw


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----------------------------------------------------------------------
 Raymond - 04-08-06 07:47 
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cat test.raw > /dev/dsp

or 

cat test.raw > /dev/audio



Which of the above will play the sound correctly if test.raw is recorded
by arecord -D hw:0,0 -f A_LAW -t raw -c 1 -r 8000 test.raw ?

----------------------------------------------------------------------
 tiwai - 04-10-06 16:52 
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The OSS emulation doesn't support alaw format conversion, too.  It's the
same behavior as OSS/Free.

Issue History
Date Modified  Username       Field                    Change              
======================================================================
04-01-06 04:26 Raymond        New Issue                                    
04-03-06 07:16 Raymond        Note Added: 0009085                          
04-03-06 07:36 Raymond        Note Added: 0009086                          
04-07-06 19:32 tiwai          Note Added: 0009152                          
04-08-06 07:47 Raymond        Note Added: 0009171                          
04-10-06 16:52 tiwai          Note Added: 0009199                          
======================================================================




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