On Tue, Nov 09, 2010 at 11:43:09PM -0800, Ken Restivo wrote: > Question about the alsa_out tool in the JACK github. > > How critical is the libresample portion of the code? What would happen if I removed it? > > i.e. if I were sending, say, one stereo pair to one amp, and another stereo pair to a different amp, and didn't care about the word clocks being in sync, do I really need that libresample stuff sucking up valuable CPU? Or could I whack it? What would be the difficulties created by doing that? Again, this'd be only for output channels and I wouldn't need the word clocks to be in sync. you are confusing things here. its not about wordclocks being in sync. if your wordclocks are in sync. you dont need alsa_out. but most likely your wordclocks are not in sync. this means your soundcards run at different drifing samplerates, and one soundcard will consume a different amount of samples per jack cycle. but jack is feeding period samples each cycle. first try using -q option set to 0 because that will use linear resampling. reducing the value of the -s option (default 256) will also improve cpu usage. but might yield worse performance of the algorithm. it depends a bit on the soundcards you are using. -- torben Hohn _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
