[Bugs] #3841 Jukebox UNSP: Playing some .wav files do not work

[Sugar Labs Bugs]

#3841: Playing some .wav files do not work
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    Reporter:  humitos                    |          Owner:  humitos                    
        Type:  defect                     |         Status:  assigned                   
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  Jukebox                    |        Version:  Unspecified                
    Severity:  Unspecified                |       Keywords:  gtk2 13.1.0                
Distribution:  Unspecified                |   Status_field:  Unconfirmed                
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Changes (by humitos):

 * cc: jnettlet (added)


Comment:

 Chat with Jon:

 {{{
 (16:08:24) humitos: jnettlet: using this .wav file
 http://bugs.sugarlabs.org/ticket/3841 I have problems...
 (16:08:42) humitos: it starts playing something weird and then, Jukebox
 crashes
 (16:10:11) jnettlet: humitos: without looking in depth my guess is one of
 the waves is at a lower rate than 44100 or 48000 Hz this causing our audio
 driver to do stepping which sounds horrible
 (16:10:36) humitos: jnettlet: ah... I didn't know that our audio driver
 has that limitation
 (16:10:41) humitos: jnettlet: it's a good answer
 (16:10:58) jnettlet: humitos: so if we have bad sounding audio that is the
 first thing to test.  I have some config changes around that do the
 sampling in software first that we need to implement
 (16:11:24) humitos: jnettlet: $ file june_chorus.wav
 (16:11:24) humitos: june_chorus.wav: RIFF (little-endian) data, WAVE
 audio, Microsoft PCM, 16 bit, mono 24414 Hz
 (16:11:33) humitos: jnettlet: that is the .wav that doesn't work
 (16:11:35) jnettlet: yep that would do it
 (16:11:58) humitos: jnettlet: but this one... DOES work
 (16:12:00) humitos: $ file thermo.wav
 (16:12:00) humitos: thermo.wav: RIFF (little-endian) data, WAVE audio,
 Microsoft PCM, 8 bit, mono 11025 Hz
 (16:12:49) jnettlet: well the 24414 is a really strange rate.  11025 at 8
 bit we can mostly handle if the sound isn't too complex
 (16:14:02) humitos: jnettlet: it doesn't seem to be complex... it's just a
 man voice :P
 (16:14:20) ***humitos is wondering about the meaning of "complex"
 (16:14:28) jnettlet: regardless CC me on the bug and I will dig up my
 .asoundrc that forces software resampling before sending it to the
 hardware.
 (16:15:13) jnettlet: humitos: there is an open bug from Quanta about one
 sample in one of the activities that also sounds "strange" I bet it is the
 same problem.
 (16:15:44) humitos: jnettlet: ok, so... is not a problem that I can attack
 and fix...
 (16:17:35) jnettlet: humitos: you could alter the gstreamer pipeline to
 force the software resampling, but really I would prefer to do this as an
 alsa configuration change.  Have gstreamer do what it wants and alsa can
 resample with speex to something the hardware can deal with
 }}}

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Ticket URL: <http://bugs.sugarlabs.org/ticket/3841#comment:5>
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