30 Oct
2011
30 Oct
'11
3:39 p.m.
On 30-10-11 15:19, Jeremy Jongepier wrote:
ok, i see, i will try some stuff later tonight, because I am not having
a setup with a keyboard attached now.
I also will try to find out what my other pci card was on the desktop
Thnx!
Dave
On 10/30/2011 03:13 PM, Dave Stikkolorum wrote:
Ok, you use the realtime option also?
I have jack 1.9.7
if I increase to 48000 qjackctl gives 42.7 ms. (21.3 when using
512/period)
You can decrease the latency by lowering the number of frames. It is
now set to 1024, try 256 or even lower. I use a setting of 64 or 128
when using a MIDI keyboard with a softsynth or sampler.
how would i see the improvement with
/usr/bin/jackd -S ?
it doesn't change the expected latency in qjackctl when I do that.
No that's right. But it might improve performance of JACK regarding
xruns. -S means Synchronous or basically the ol' Jack1 way, some
soundcards work better that way.
One of the
annoying things is the delay between the midi keyboard
and the actual sound. I guess it has to do with the one we are tuning
now, right?
Yes, the lower the latency, the lower the delay between pressing a key
and hearing the actual sound. With a frames setting of 64 at 48Khz
system latency will drop to 2.67 ms (64/48000*2). Those are the kind
of latencies you want when using a MIDI keyboard.
Best,
Jeremy
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