MChanVoicer

Extension

Description

MChanVoicer is intended for channel rotation polyphony as used in the Roli Saeboard and QuNexus keyboard. It accepts one channel of incoming noteOn, noteOff, bend, and press messages, and has one MKtlElement each for note, vel, bend, press, and velOff. NoteOn and NoteOff are interpreted monophonically as follows:

noteOn: if there are no held notes yet, startFunc is triggered; always sets note and vel values from incoming values

noteOff: if there are held notes, note value rolls back to one of them (by default, the latest); if not, noteOff sets vel element to 0, offVelEl is set, and endFunc is triggered.

First code examples:s.boot; s.latency = nil; m = MChanVoicer(0); m.dump; Ndef(\m, { |pitch=60, amp = 0.0| VarSaw.ar(pitch.midicps) * 0.5 * amp.lag(0.1) ! 2; }).play; m.noteEl.action = { |el| Ndef(\m).set(\pitch, el.deviceValue); }; m.velEl.action = { |el| Ndef(\m).set(\amp, el.value.squared); }; m.startFunc = { "roger, starting note, over".postln }; m.endFunc = { "over and out.".postln }; m.noteOn(64, 80); m.noteOn(67, 40); m.heldNotes; // two held notes m.noteOff(67); // down to previous note m.heldNotes; m.noteOff(64); // now off // connect a midi keyboard MIDIIn.connectAll; // single channel only ~non = MIDIFunc.noteOn({ |vel, note, chan| m.noteOn(note, vel); }, nil, m.chan); ~nof = MIDIFunc.noteOff({ |vel, note, chan| m.noteOff(note, vel); }, nil, m.chan); // and add responders for bend and press ... // With a rotating polyphony keyboard like the QuNexus, try this: s.boot; s.latency = nil; g = NPVoicer(Ndef(\piano)); // make an NPVoicer with an Ndef in it g.prime(\default); // prepare it with the default synthdef g.play; // play it // test by hand g.put(1, [\freq, 48.midicps]); g.setAt(1, \freq, 60.midicps); g.release(1); // make 10 voicers ~voicers = (0..9).collect { |i| var v = MChanVoicer(i); var ii = i + 10; v.startFunc = { |voicer, note, vel| g.put(ii, [\freq, note.midicps, \vel, (vel / 127).squared].postln); }; v.noteEl.action = { |el| g.setAt(ii, \pitch, el.deviceValue); }; v.velEl.action = { |el| g.setAt(ii, \amp, el.value.squared); }; v.endFunc = { g.release(ii) }; }; // listen to all midi channels MIDIIn.connectAll; ~non = MIDIFunc.noteOn({ |vel, note, chan| ~voicers[chan].noteOn(note, vel); }, srcID: nil); ~nof = MIDIFunc.noteOff({ |vel, note, chan| ~voicers[chan].noteOff(note, vel); }, srcID: nil); // add full test here with bend and press control on each channel...

Class Methods

.new

Instance Methods

.chan

.noteEl

.velEl

.bendEl

.pressEl

.offVelEl

.noteOn

.noteOff

.bend

.press

.startFunc

.endFunc

.heldNotes

.startNote

.endNote

Examples