On Mon, Apr 16, 2012 at 05:21:47PM -0400, S. Massy wrote: > Okay, so for a standard 2 periods of 128 frames each, my nominal dddelay > is 256 frames or 5.3ms at a sr of 48k, twice that for a round-trip. No. The nominal roundtrip-delay (physical input to physical output if you connect the corresponding ports directly) is period * nperiods. 1 * period occurs at the input, (nperiods - 1) * period at the output. If you masure it using jack_delay you will in most cases find a value that is a bit higher, this is due to delay in AD/DA converters etc. For some types of soundcard (e.g. USB) the real latency can be significantly higher than the nominal value. You can tell Jack about this using the -I and -O options. The extra delay when making a loop such as Ardour -> jconvolver -> Ardour is one period. 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
