[alsa-devel] [PATCH] es1968: fix jitter on some maestro cards

Rene Herman rene.herman at keyaccess.nl
Mon Apr 14 12:43:45 CEST 2008

On 14-04-08 12:22, Takashi Iwai wrote:

> At Tue, 01 Apr 2008 00:24:43 +0200,
> Rene Herman wrote:
>> On 30-03-08 00:49, Andreas Mueller wrote:
>>> This patch suppresses jitter on several Maestro cards in stereo mode
>>> (ALSA of course).
>>> The patch is also incorporated in the *BSD drivers where I "ported" it from.
>>> I am barely used to driver-development so please take a look (esp. the channel
>>> parameters), nevertheless it completely works for me.
>>> Without this patch most of the stereo audio gets out of sync and really
>>> distorted (oss-emulation with mplayer at 48000khz worked somehow).
>>> CCed to those listed in the .c file.
>> Added the alsa-devel list (and re-attached the patch). My TerraTec DMX (ESS 
>> Canyon3D, ES1970MS-3D) doesn't need this but doesn't seem to suffer from it 
>> either. Otherwise no idea about this.
> This should depend on the sample rate you use.  48k would work without
> the patch.

Just to be clear archive-wise -- on this Canyon3D, so does 44100.

> Anyway, I applied it to ALSA tree now.  Thanks.


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