Midi Merge Technique?

[Fraser, Colin J]

> -----Original Message-----
> From: Paul Perry [mailto:pfperry at melbpc.org.au]
> Sent: 20 January 2000 13:12
> To: synth-diy at mailhost.bpa.nl
> Subject: Re: Midi Merge Technique?
> 
> looking on the scope at what comes out of the Korg KMS30 midi 
> to din convertor,
> I can only assume that the midi timing clocks have a pretty 
> wide jitter on them 
> as they come out of Cakewalk on my computer.
> 
> Has anyone got gear to tell exactly how regular are midi 
> clocks in the real
> world?

If you're only sending midi clock, and no other data, your looking at a
minimum delay of 0.3ms. Not too bad.

My understanding is that it is nearly impossible to get decent timing
accuracy from a Windows MIDI app - it's just not built for time critical
apps.

E-Magic (IIRC) do a multi-port MIDI interface for the PC that supports
time-stamping for transmitted events. As long as your sequencer supports it
(Logic only so far) it sends data to the interface in advance, allowing the
interface to send them bang on the exact time they are supposed to go.
That might help a bit.


Colin f