[LAD] Jitter analysis

[benravin]

David Olofson wrote
> On Sun, Sep 17, 2017 at 7:17 AM, benravin <

> ben.alex@

> > wrote:
> [...]
>> is indeed a slow varying timing jitter, for example every 400ms, the
>> timing
> [...]
> 
> Context and environment...?
> 
> Is there by any chance sample rate conversion going on somewhere?
> (Hardware or software; usually behaves in about the same manner.)
> Since buffer sizes in most environments need to stay fixed, and usually
> also have further restrictions, this tends to affect buffer/callback
> timing.
> As a result, input-to-process and process-to-output latency drift over
> time, and pop back (buffer drop, or extra buffer) on a regular basis.
> 
> -- 
> //David Olofson - Consultant, Developer, Artist, Open Source Advocate
> 
> .--- Games, examples, libraries, scripting, sound, music, graphics ---.
> |   http://consulting.olofson.net          http://olofsonarcade.com   |
> '---------------------------------------------------------------------'
> _______________________________________________
> Linux-audio-dev mailing list

> Linux-audio-dev at .linuxaudio

> https://lists.linuxaudio.org/listinfo/linux-audio-dev



Yes, sample rate conversion is done  to adjust the drift in sample rate. But
this periodic timing errors are making the system to oscillate. 



-----
-ben
--
Sent from: http://linux-audio.4202.n7.nabble.com/linux-audio-dev-f58952.html