Please find the attached XL sheet which has the data of read & write timings.
Both read and write are of same length alpha & beta coefficients are float c1 = 0.017771532; /* alpha */ float c2 = 0.000157914; /* beta */ Audio Control loop local FIFO has two buffers, 1920 samples/buffer aud_ctrl_err.xlsx <http://linux-audio.4202.n7.nabble.com/file/t2646/aud_ctrl_err.xlsx> Fons Adriaensen-3 wrote > On Sat, Sep 16, 2017 at 10:17:04PM -0700, benravin wrote: > >> I'm facing a timing jitter which happens periodically due to some >> interrupt, >> which is causing the task to be delayed. Since this happens periodically, >> it >> is indeed a slow varying timing jitter, for example every 400ms, the >> timing >> deviation is in the order of few ms ( 4-6ms). This is not getting >> filtered >> out by DLL, and results in a slow varying oscillations which never dies. >> >> Any way to identify and limit these timing jitters and not to take any >> action on drift correction by DLL ? > > It's impossible to say anything about this if you don't provide > numbers. How big is the resulting resampling ratio variation ? > > If a few ms jitter leads to anything perceptible then your DLL > and/or resampling control loop are not dimensioned correctly, > or there is another basic problem with your design. > > Ciao, > > -- > FA > > A world of exhaustive, reliable metadata would be an utopia. > It's also a pipe-dream, founded on self-delusion, nerd hubris > and hysterically inflated market opportunities. (Cory Doctorow) > > _______________________________________________ > Linux-audio-dev mailing list > Linux-audio-dev@.linuxaudio > https://lists.linuxaudio.org/listinfo/linux-audio-dev ----- -ben -- Sent from: http://linux-audio.4202.n7.nabble.com/linux-audio-dev-f58952.html _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org https://lists.linuxaudio.org/listinfo/linux-audio-dev
