Hi I did a test to get some actual numbers on my latency controlling csound from midi in real time: I hooked up a mic to capture the sound of the key hitting the buttom of the keyboard. I then made a simple csound patch with instant attack. Recorded both on my computer one on the left one on the right channel. Then I opened a soundeditor and measured the time between the two. I was able to go down to 0.014 s. It feels pretty snappy, but it *looks* like a lot. What can you guys achieve with a similar test? And what would be typpical of commercial hardware synths? My setup is: *p4 2.4G laptop *debian/unstable *stock kernel 2.6.9 *edirol ua-1a usb soundcard *evolution MK-249C keyboard -- peace, love & harmony Atte http://www.atte.dk