[FFmpeg-devel] [PATCH] ALSA: use a different time filter.

Nicolas George nicolas.george at normalesup.org
Wed Dec 28 21:23:11 CET 2011

L'octidi 8 nivôse, an CCXX, Michael Niedermayer a écrit :
> Can you explain how the current timefilter becomes divergent ?

If I understand things correctly, it can be seen as a second order
differential equation solved using the Euler method. This method is not very
efficient at the best of time and requires quite a small time step. With the
selected parameters, the characteristic time of the homogeneous solution
seems to be about 150 ms while the time step on a typical ALSA setup would
be something like 23 ms.


  Nicolas George
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