On Thu, Apr 02, 2009 at 11:16:39AM +0200, Atte André Jensen wrote: > I tried measuring my latency with jdelay. Started in on the commandline, > first it said > > Signal below threshold... > > Then I connected it's input to the output of system:capture_1 with my > microphone connected and it output to the input of system:playback_1+2. > Now I get a squareish tone and when "singing" into the microphone I get > reading like these: > 22442.483 Inv > 58010.411 ?? > 43602.390 ?? Inv > 43474.474 > 43474.474 ?? Inv > Signal below threshold... > Signal below threshold... > Signal below threshold... > 25549.731 ?? > 25549.731 ?? Inv > 37749.225 ?? > 37749.225 ?? Inv > 37749.225 ?? > 24653.357 ?? > 24653.228 ?? Inv > 25677.165 ?? > 11013.134 ?? Inv > 25677.153 ?? > 2821.046 ?? Inv > 2821.046 ?? > > The man page says the values are in samples, so for instance a value of > 37749.225 should be 0.77 seconds at 48000, right? This seems bogus > (qjackctl reports 10 ms). > > What am I doing wrong? As far as I know you are not supposed to sing (at least to get proper results from jack_delay it is not needed). :) Just make a closed loop. jack_delay generates its own testing signals (which are probably much easier to analyze than what you sing). Hope this helps. Jan _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
