[gmpi] Re: 3.15 MIDI
- From: Tim Hockin <thockin@xxxxxxxxxx>
- To: gmpi@xxxxxxxxxxxxx
- Date: Mon, 14 Jun 2004 08:20:07 -0700
On Sun, Jun 13, 2004 at 11:17:14PM -0700, Chris Grigg wrote:
> Could someone kindly illustrate exactly how this per-voice/per-note
> parameter bundling and voice-id concept would work? I mean, in a
> basic music production studio situation, with a physical MIDI
> velocity-sensitive keyboard controller driving music synthesizers in
> a GMPI graph.
Good use case.
* Configure host to send MIDI Channel 3 from MIDI interface M to plugin P.
* MIDI keyboard sends a MIDI message "Channel 3, Note-On #60, Velocity 100".
* The computer MIDI interface receives it.
* The host reads it from the MIDI driver.
* The host sees that Channel 3 is routed to plugin P.
* The host sends a GMPI note-on message to plugin P, with VELOCITY=100.
Expand it to add a knob:
* Same config as above
* MIDI controller sends a MIDI message "Channel 3, CC #93 = 76".
* The computer MIDI interface receives it.
* The host reads it from the MIDI driver.
* The host sees that Channel 3 is routed to plugin P.
* Plugin P has a CC-mapped parameter C with natural range 0-22000.
* The host converts 76/127 into x/22000 (13062.5)
* The host sends a GMPI event to parameter C with VALUE=13062.5
Does that clarify at all?
Is that worth putting in the reqs?
Is any of this worth putting in the reqs?
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