[LAD] Midi Beat Clock to BPM

Clemens Ladisch clemens at ladisch.de
Sat Nov 1 19:10:30 UTC 2014


hermann meyer wrote:
> I try to fetch the bpm from the Midi Clock, and stumble over "jitter".
>
> How do you usually fetch the bpm from Midi Clock, any pointer will be welcome.

<http://en.wikipedia.org/wiki/Phase-locked_loop>
<http://en.wikipedia.org/wiki/Kalman_filter>

MIDI clock is interesting, because deviations from the predicted clock
frequency are either errors and must be suppressed, or are because of
a change in tempo and must replace the old clock rate.


Regards,
Clemens


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