6 Jun
2008
6 Jun
'08
6:08 p.m.
Hi all,
i have one midi device that send midi clock info.
this clock is used to set arpeggios and LFO time, and maybe other stuff.
this device don't have lcd screen, so i can see exactly current bpm.
1) how compute (easily) bpm over midi channel? (with aseqdump i can
see clock message repeated over and over)
2) how to send standard midi message to set new bpm?
thanks!
--
cb
6 Jun
6 Jun
7:30 p.m.
On Fri, 2008-06-06 at 22:08 +0200, becks wrote:
Hi all,
i have one midi device that send midi clock info.
this clock is used to set arpeggios and LFO time, and maybe other stuff.
this device don't have lcd screen, so i can see exactly current bpm.
1) how compute (easily) bpm over midi channel? (with aseqdump i can
see clock message repeated over and over)
2) how to send standard midi message to set new bpm?
there really isn't any such message. its one of the central issues with
sending MIDI clock, because it presupposes that the receiver knows what
the sender means.
MIDI clock involves, IIRC, 24 messages per quarter note. you can derive
tempo from the rate of arrival of clock messages.
7 Jun
7 Jun
11:15 a.m.
On Fri, Jun 06, 2008 at 10:08:28PM +0200, becks wrote:
Hi all,
i have one midi device that send midi clock info.
this clock is used to set arpeggios and LFO time, and maybe other stuff.
this device don't have lcd screen, so i can see exactly current bpm.
1) how compute (easily) bpm over midi channel? (with aseqdump i can
see clock message repeated over and over)
MIDI uses 24 clock ticks per quarter note. So you can get the
average tempo by measuring the number of MIDI ticks per minute and
dividing by 24. The tempo must not be changing.
2) how to send standard midi message to set new bpm?
there's no such message. MIDI allows only one master that
continuously gives the tempo. The solution would be to put your
device in "slave mode", and to put your software in "master mode"
so you can choose the tempo.
-- Alexandre
7:07 p.m.
On Sat, Jun 7, 2008 at 3:15 PM, Alexandre Ratchov <alex(a)caoua.org> wrote:
MIDI uses 24 clock ticks per quarter note. So you can
get the
average tempo by measuring the number of MIDI ticks per minute and
dividing by 24. The tempo must not be changing.
Paul and Alexandre, thanks for explanation
--
http://msound.org
5958
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3 comments
3 participants
participants (3)
-
Alexandre Ratchov -
becks -
Paul Davis