> Finally I got tired of this, reinstalled Ubuntu and got Jack and amSynth > working together in real time (it took me a day and a half, but I managed have to work if possible. My laptop is an IBM Thinkpad T40, 1.50 GHz, and > it!) Now the sound quality is beautiful... if I only open 4 or 5 instances > of amSynth. But if I open more than that, my laptop makes a horrible noise > and freezes, and the only way I can shut it off is to take the battery > out. > No idea about the freezes, normally jack starts producing xruns when overloaded, but does not freeze the hole computer
> I spent some time trying to figure out why this happens and finally > twigged that the Jack panel shows its CPU usage. When I play just one > amSynth the CPU usage is 41%, and for 5 amSynths it's a massive 82%, which > explains why my computer freezes. So it seems my computer just isn't fast > enough to do what I want it to do :-( So my questions is, is there > anything I can do to fix this, short of buying a faster computer? Would it > help if I got a better soundcard? Geerally, you could increase the number of frames per period in the settings-window of qjackctl to reduce cpu-usage (and increase latency). AFAIK the soundcard has no/very little effect on cpu, so your options are either trading off cpu-usage with latency (whitch is usually ok for production) or spending money on a faster cpu if latency is a concern. -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
