On Mon, Mar 04, 2013 at 10:53:30PM +0100, Chris Bungue wrote: > I work with KXstudio and Unbuntu 12.04. Normally I think is on > KXstudio cadence the main tool for start and stop jack, but I like > qjackct. Most of the time I use both tools. Now I have seen that > cadence and qjackct shows different latency. Although both have the > same settings. Cadence always shows exactly the half of the value than > qjackct. > > Which latency value of both is right? Depending on how you define latency both could be right. Qjackctl shows the sum of input and output latency - the time a signal takes from an input of your soundcard to an output if you connect the corrsponding Jack ports [1]. I don't know Cadence but apparently it shows just the input and/or output latency separately, or it gets it wrong. If you use -n 2 (2 periods) then input and output latency are equal. If n > 2 then they are not, and Cadence *should* show two different values, and the sum of those should be the value shown by Qjackctl. So try -n 3 and see what Cadence tells you... [1] ignoring any additional HW delays that ALSA/Jack/Qjackctl don't know about. You can measure the real delay using jack_delay. 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-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
