On 04/03/2011 12:52 AM, Bernardo Barros wrote: > I would be very embarrassed if I'm fooling myself, but from what I > read the information provided by qjackctl, is this really the latency > of the audio system as low as 0.08ms with frames/period of 2! :S must be a typo: 2*16/ 44100Hz = 0.725ms = ~0.8ms Measure it with 'jack_delay' [1]. The number given in qjackctl's setup dialog is the nominal latency; and the time between two jack cycles. Usually there's additional latency due to [PCI|USB] bus overhead, sound-card & ALSA buffering, DAC/ADCs, etc. - around 1 ms round-trip for PCI devices. http://wiki.linuxaudio.org/wiki/jack_latency_tests have fun, robin [1] http://kokkinizita.linuxaudio.org/linuxaudio/index.html _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
