[PD] MIDI latency problem
chi ball
c_cb at hotmail.it
Thu Dec 3 17:45:59 CET 2009
Hi, I have a little *problem* with *MIDI latency* (linux Mandriva 2010.0):
- if I make a patch to
generate midi notes repeated, with a metro (for example [metro 200])
I listen the rithm irregular (instead in Windows -on the same pc- the
rithm is perfect..)
-if in the same patch I change [metro
200] in [metro 10] the midi notes output goes in crash, is'n possible
play midi notes speadily (instead in Windows -on the same pc- this is
possible).
-instead if I make an oscillator with a slide, the
pitch of sound change *perfectly in realtime*.
So the problem is
only of MIDI.
__________________________________
My settings:
-in
"/etc/security/limits.conf":
*
- rtprio
0
*
- nice
0
@audio - rtprio 89
@audio - memlock 288000#My RAM = 576MB
@audio - nice
-10
-in "/etc/modprobe.preload":
realtime mlock=1
gid=81#My user is in the "audio" group.
_______________________________
-in "qjackctl":
realtime: on
priority=89
frames/period=128
sample
rate=44100
periods/buffer=2
port maximum=256
timeout=200
output
latency=6
latency: 5.8msecmidi: seq
_________________________________________
in "puredata":
-I run pd with: pd -rt -jack -channels
2
-In "media" I set "jack" and "ALSA MIDI"._________________________________________
Any suggestion for this
problem?
Thanks,
c
P.S.:
my o.s. is Mandriva 2010.0
Processor: Pentium III Coppermine
RAM: 576 MBSound Blaster Live! 5.1
:)
_________________________________________________________________
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