linuxaudio.org

On 04/03/2011 12:52 AM, Bernardo Barros wrote:

quoted text
> 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

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