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Re: MIDI tick resolution

From: karl
Subject: Re: MIDI tick resolution
Date: Wed, 21 Mar 2018 16:51:18 +0100 (CET)

> Karl Hammar wrote
> > The technical limitation of midi file format is that the tick is a
> > 15bit quantity, i.e. the maximum value is 2^15-1 = 32767.
> The only issue of going overboard with that value is that some DAWs might
> then complain when opening these files (I never tried importing a .mid file

If lilypond defaults to 384, and user sets it to something that a device cannot 
handle, that is a user problem I guess.

> Karl Hammar wrote
> > Perhaps we should call the value Midi_division or something similar. 
> The terminology I find the most is Pulses Per Quarter Note (PPQN),Pulses Per
> Quarter (PPQ) and Ticks Per Quarter Note (TPQN). I am surprised this is not
> on the official specifications as it's what most DAWs use. 

I don't know about thoose, one just have to choose a name and
possible mention other names used. Usually I tend to use names from
standard papers because then I can point to paper X page n. I don't
know what the regular developers think about this, but if you
know your stuff, I wouldn't mind if you choose the name.

What we are missing now is some info of how to do handle

\midi {
 \divisions = 960 % or
 \ppq = 960

in the source.

/Karl Hammar

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