Tim E. Real wrote:
On February 20, 2010 11:33:04 am Ralf Mardorf wrote:
Rui Nuno Capela wrote:
It also
transmits them. It also recognizes tick but doesn't use it.
From what I understand, tick is nothing more than a periodic 'keep
alive' signal, not a sync signal. I could be wrong though...
this "tick" signal (0xf9) must be (is it?) some leftover from
ancient
midi times, if ever used effectively. i fail to recognize its use but
being just, uh,... _undesirable_ noise:)
i'll turn off
0xf9 - "MIDI Tick" is a fixed and real sync signal, sync
independently
from the tempo, the "keep alive" signal is 0xfe - "Active Sense",
very
useful for a master keyboard during a live performance, assumed
receiving devices do know what to do, if "active sense" unexpected would
stay away.
Oops. My mistake. Mixing up signals again.
Tim.
I didn't know MIDI tick before, but I wondered that Rui was talking
about noise, while you were talking about active sense. It makes me
wonder, because active sense should be send every 300ms, but it also
would be okay after active sense was send for the first time, that there
is any signal within a second, e.g. active sense every 800ms instead of
every 300ms, so this won't be a problem. I need to read about MIDI tick
and yes, it has to be send exactly every 10ms. 100 times a second is
more traffic :D. MIDI tick seems to be something relative new for MIDI,
Pedro mentioned this before.