New directory tree, with preprocessor/ inside interpretor/.

[Faustine.git] / interpretor / preprocessor / faust-0.9.47mr3 / examples / envelop.dsp

diff --git a/interpretor/preprocessor/faust-0.9.47mr3/examples/envelop.dsp b/interpretor/preprocessor/faust-0.9.47mr3/examples/envelop.dsp
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+declare name           "envelop";
+declare version        "1.0";
+declare author                 "Grame";
+declare license        "BSD";
+declare copyright      "(c)GRAME 2006";
+
+import("music.lib");
+
+//-------------------------------------------------
+//             ADSR Envelop Generator
+//             The 'state' of the envelop generator is
+//             defined by a phase signal p2 allowing to
+//             distinguish the attack and the decay-sustain
+//             phases, and the envelop signal y itself.
+//-------------------------------------------------
+
+envelop(a,d,s,r,t) = adsr ~ (_,_) : (!,_)                                              // The 2 'state' signal are feedback
+    with {
+               adsr (p2,y) = (t>0) & (p2|(y>=1)),                                      // p2 = decay-sustain phase
+                                         y + p1*a - (p2&(y>s))*d*y - p3*r*y    // y  = envelop signal
+               with {
+                       p1 = (p2==0) & (t>0) & (y<1);                                   // p1 = attack phase
+                       p3 = (t<=0) & (y>0);                                                    // p3 = release phase
+               };
+    };
+
+
+attack         = 1.0/(SR*nentry("[1:]attack [unit:ms][style:knob]", 20, 1, 1000, 1)/1000);
+decay          = nentry("[2:]decay[style:knob]", 2, 1, 100, 0.1)/100000;
+sustain        = nentry("[3:]sustain [unit:pc][style:knob]", 10, 1, 100, 0.1)/100;
+release        = nentry("[4:]release[style:knob]", 10, 1, 100, 0.1)/100000;
+
+
+process =  button("play"): hgroup("", envelop(attack, decay, sustain, release) : *(noise));
+