fm rhodes for nornsv0.1

1 files changed, 75 insertions, 0 deletions

diff --git a/lib/Engine_Rhodes.sc b/lib/Engine_Rhodes.sc
new file mode 100644
index 0000000..02da1af
--- /dev/null
+++ b/lib/Engine_Rhodes.sc
@@ -0,0 +1,75 @@
+// Adapted from https://sccode.org/1-522, which is adapted in
+// turn from STK's 'rhodey', which is adapted from a TX81z
+// algorithm.
+
+Engine_Rhodes : CroneEngine {
+    var <notes;
+
+    *new { arg context, doneCallback;
+        ^super.new(context, doneCallback);
+    }
+
+    *initClass {
+        // TODO store it as a classvar?
+        StartUp.add({
+           SynthDef("Rhodes",
+               {
+               | // standard meanings
+               out = 0, freq = 440, gate = 1, pan = 0, amp = 0.1,
+               // all of these range from 0 to 1
+               vel = 0.8, modIndex = 0.2, mix = 0.2,
+               lfoSpeed = 0.4, lfoDepth = 0.1
+               |
+               var env1, env2, env3, env4;
+               var osc1, osc2, osc3, osc4, snd;
+               lfoSpeed = lfoSpeed * 12;
+               freq = freq * 2;
+    
+               env1 = EnvGen.ar(Env.adsr(0.001, 1.25, 0.0, 0.04, curve: \lin));
+               env2 = EnvGen.ar(Env.adsr(0.001, 1.00, 0.0, 0.04, curve: \lin));
+               env3 = EnvGen.ar(Env.adsr(0.001, 1.50, 0.0, 0.04, curve: \lin));
+               env4 = EnvGen.ar(Env.adsr(0.001, 1.50, 0.0, 0.04, curve: \lin));
+    
+               osc4 = SinOsc.ar(freq * 0.5) * 2pi * 2 * 0.535887 * modIndex * env4 * vel;
+               osc3 = SinOsc.ar(freq, osc4) * env3 * vel;
+               osc2 = SinOsc.ar(freq * 15) * 2pi * 0.108819 * env2 * vel;
+               osc1 = SinOsc.ar(freq, osc2) * env1 * vel;
+               snd = Mix((osc3 * (1 - mix)) + (osc1 * mix));
+               snd = snd * (SinOsc.ar(lfoSpeed) * lfoDepth + 1);
+    
+               snd = snd * EnvGen.ar(Env.asr(0, 1, 0.2));
+               snd = Pan2.ar(snd, pan, amp);
+               DetectSilence.ar(snd, doneAction: Done.freeSelf);
+               Out.ar(out, snd);
+           }).add;
+        });
+    }
+    alloc {
+        notes = nil!128;
+        this.addCommand("note_on", "ii", {
+            arg msg;
+            var note = msg[1];
+            var vel = msg[2];
+            if(notes[note].isNil) {
+                notes[note] = Synth("Rhodes",
+                                    [
+                                        \out, context.out_b,
+                                        \freq, note.midicps,
+                                        \vel, vel/127.0
+                                    ],
+                                    target: context.xg);
+            }
+        });
+
+        this.addCommand("note_off", "f", {
+            arg msg;
+            var note = msg[1];
+            if(notes[note].notNil) {
+                notes[note].release;
+                notes[note] = nil;
+            }
+        });
+    }
+    free {
+    }
+}
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