On Thu, Feb 14, 2013 at 9:03 PM, Ralf Mardorf <ralf.mardorf@xxxxxxxxxxxxx> wrote: > On Thu, 2013-02-14 at 20:32 -0700, Bob van der Poel wrote: >> Now, if I have an app like audacity set to 48K does it (or jack?) send >> a message to the box to enable 48 (or 44.1)? If that is the case, I >> assume that using 44.1 or 48 should have the identical latency issues? >> 48K should send a bit more data back to the computer? > > All audio devices I know automatically are set to the sample rate set by > alsa, 'jackd -d alsa --help'. > > No, the latency will differ for different sample rates: > > 512 samples / 44.1 kHz = 11.609977324 ms > 11.609977324 * 2 = 23.219954649 ms ≈ 23.2 ms > > 512 samples / 48.0 kHz = 10.666666667 ms > 10.666666667 * 2 = 21.333333334 ms ≈ 21.3 ms Is this saying that a higher freq will result in lower latency? Guess that makes sense since higher freq contains more data. > Higher sample rate = more data at equal bit depth. Guess there really is no reason not to use 48K then. Thanks. -- **** Listen to my CD at http://www.mellowood.ca/music/cedars **** Bob van der Poel ** Wynndel, British Columbia, CANADA ** EMAIL: bob@xxxxxxxxxxxx WWW: http://www.mellowood.ca _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
