> From a few days I'm trying to use my pc as a synth to improve the > sounds of my keyboard. > I've installed low-latency kernel, alsa, jack, muse, rosergarden... etc > from planet ccrma. Cool! > > I can't start jack with the period (-p) under 512 frames (with my SB > Audigy) and a number of periods (-n) under 2. That mean that I have a > latency of at least 23.2 msec (from qjackctl). this *may* be a limitation of the Audigy. I have one, but it's in a windows box so I cannot check for you. I remember it was pretty high though compared to my RME cards. > > Does this latency affects the sound I hear when I play my MIDI keyboard > with a synth (for example muse)? > Does anyone knows if the Audigy (player) can go under 512 of the -p > parametre in jack? Yep. MIDI in latency + soft synth latency + Jack output latency > > With windows & cubase VST I can get a latency of about 10 ms that it's > good for my purpose, while 20 msec > > Can I play directly in to alsa to reduce the latency (jump the jack > latency)? With soft synths that support it. Timidity I think supports this. Maybe AMS, but I'm not sure. Some of the older ones like Bristol, etc., before Jack came along. > > I think that the only way to get the so claimed 2.9 msec latency is to > reduce to 64 the numbers of frames, but I don't know if is it possible > with my sound card and if my actual limit of 512 is due misconfiguration > or is the real limit for the Audigy. I do not remember being able to run this card that low. I can do this with my RME cards. Not a lot of info. All I have to give. Sorry. Good luck, Mark