hollunder@xxxxxx wrote: > On Thu, 02 Apr 2009 11:16:39 +0200 > Atte André Jensen <atte.jensen@xxxxxxxxx> wrote: > >> Hi >> >> 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? >> > > Hi Atte. > I made the same mistake at first. > Simply don't use a microphone, just a patch cable. > Latencies are calculated by frames/samplerate, the resulting numbers > are milliseconds. Aside from that, make sure that you don't have any hardware monitoring enabled on the channel the jdelay signal is generated on. Greets, Pieter _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
