On 03/28/2014 07:33 PM, Julien Benoist wrote: > I made the following observations: > - whatever the kernel - with sox/aplay sending raw content to the ALSA > device - 24/192 content is subject to very high jitter/cracks. > - interestingly, I've noticed that xbmc (7a6cb7f) plays 24/192 content > correctly if the kernel is <= 3.12. With more recent versions (tried > 3.13 and mainline about 2 weeks ago), playing the content leads to the > same jitter/cracks in xbmc.
If you're really certain about this, and if you can rule out all other components than the kernel, please do a git bisect to find which commit causes this regression. Depending on how long it takes you to tell whether a kernel version is affected, this should not take too much time. Some instruction can be found here for instance: http://www.landley.net/writing/git-bisect-howto.html > - Now When xbmc plays 24/192 content correctly, all I know is that > /proc/asound/card/*/stream* confirms that the steam is 24/192, but xbmc > must be either doing something to the stream, or streaming it a little > bit differently than sox/aplay. Please make sure you use the "hw" plugin with aplay. By default, the "plughw" plugin will kick in and do the format conversion on the fly. Daniel ------------------------------------------------------------------------------ _______________________________________________ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
