From: Arnout E. <ros...@bz...> - 2008-10-07 07:48:07
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On Tue, Oct 07, 2008 at 12:14:59AM +0100, eccn wrote: > However, I notice that qjackctl (jack audio connection kit GUI) reports > a 46.4ms latency, which I believe is causing an audible time skew > between the metronome and the recorded audio. > > Two questions: > > 1) How can I reduce this latency figure? I use Ubuntu Studio, with a RT > kernel (last time I looked) and Jack in RT mode. Not much else running > in the background either. Jack is about keeping the latency constant: you can change its configuration (frames/period, periods/buffer) to reduce latency. Of course, the lower the latency, the shorter your applications are allowed to process, thus increasing the chance of xruns. > 2) What's the easiest way to re-synchronise my audio replay against the > MIDI timekeeping in Rosegarden, assuming I can't fix (1)? If all your applications support syncing to the jack transport mechanism, configuring them to do so might help. Arnout |