26 Sep
2009
26 Sep
'09
7:10 p.m.
Jens M Andreasen wrote:
Yes, the Midex had 4 MIDI outs.
Have you tested heavy traffic with just one MIDI port?
I can't speak for aftertouch, but SysEx can become problematic. Okay,
SysEx always needs to be transmitted from $F0 to $F7, while aftertouch
can be interrupted, anyway, aftertouch can cause really a lot of data,
much more than SysEx for filters.
On Sat, 2009-09-26 at 14:03 +0200, Ralf Mardorf
wrote:
When interrupted it's 2 bytes, one byte only when running status can
take effect. To be honest, I don't know if aftertouch will be
interrupted by applications and devices by default. Is this MIDI
standard? And to be honest, much more data is produced by the pitch
wheel, because of the low and high byte. I never had any timing issues
because of aftertouch and pitch bend, but I noticed that they produce
much more traffic than real-time SysEx for filters. IIRC I had 4 MIDI
outputs for the Atari ST, I guess using just one MIDI output can cause
trouble for pure MIDI music.
Ralf When using several MIDI ports even a lot of SysEx
can be sent
real-time, but using only one MIDI port even aftertouch can cause
timing problems.
A stream of channel-aftertouch is single bytes, and can at any point be
interrupted by more important data (note-on) with at most 0.3
miliseconds delay ...