8 Sep
2009
8 Sep
'09
2:15 p.m.
andy baxter wrote:
Hi all,
I'm trying to get my usb midi keyboard (an edirol PCR 800) working with
my good laptop (a 1400 MHz core 2 thinkpad X61s). I have jackd running
with 8 msec latency and no xruns using an onboard intel HDA sound card.
When I hook up qsynth (fluidsynth) to the keyboard's alsa midi output,
the notes are triggered with a slight (<0.1s?), and variable time delay.
Sometimes the note plays immediately on pressing the key; sometimes
there is a noticeable delay. This does not happen when I use the same
setup on my old laptop (a 1400 Mhz single core dell).
Can anyone recommend an online guide to building a realtime audio
capable kernel? I may have missed some important details when compiling
the kernel I'm using (I just took the debian defaults and switched on
the realtime patch I had applied). E.g. I remember the system timer is
set at 250Hz.
andy