[LAD] midi beat clock

Ralf Mardorf ralf.mardorf at alice-dsl.net
Sat Feb 20 16:33:04 UTC 2010

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.

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