#1978 NORM Opportu: TamTam is silent under qemu

Zarro Boogs per Child bugtracker at laptop.org
Sun Oct 28 18:57:30 EDT 2007


#1978: TamTam is silent under qemu
-------------------------------+--------------------------------------------
  Reporter:  MitchellNCharity  |       Owner:  Nat        
      Type:  defect            |      Status:  new        
  Priority:  normal            |   Milestone:  Opportunity
 Component:  tamtam-activity   |     Version:             
Resolution:                    |    Keywords:             
  Verified:  0                 |  
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Comment(by mihi):

 I don't really know anything about ALSA programming, but I tried to debug
 build 622 in qemu a bit:

 - It seems that clooper disables resampling in ALSA and tries to resample
 itself to 16000 and multiples of it.
 - at least on my PC, the only "natively" supported sampling rate in qemu
 is 47040 Hz. I don't know if that depends on the native sampling rates of
 the host.
 - editing Config.py and setting PLUGIN_RATE from 16000 to 15680 (one
 third) creates strange noise but you can hear the samples (tested in
 TamTamJam)
 - setting the sample rate to 23520 works for me.
 - Tested only with TamTam Jam, but should work with the others as well.

 I am aware that this is only a workaround; the proper solution would be to
 automatically determine the best sampling rate (or to enable automatic
 resampling if no rate is available).

-- 
Ticket URL: <https://dev.laptop.org/ticket/1978#comment:9>
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