Version 0.99

FM4Alg5.cpp

@@ -0,0 +1,48 @@
+/******************************************/
+/*  Algorithm 5 (TX81Z) Subclass of       */ 
+/*  4 Operator FM Synth                   */
+/*  by Perry R. Cook, 1995-96             */ 
+/*  This connection topology is 2 simple  */
+/*  FM Pairs summed together, like:       */
+/*                                        */
+/*   Alg 5 is :      4->3--\              */
+/*                          + --> Out     */
+/*                   2->1--/              */
+/*                                        */
+/*  Controls: control1 = mod index 1      */
+/*            control2 = crossfade of two */
+/*                          outputs       */
+/*            control3 = LFO speed        */
+/*            modWheel = LFO amount       */
+/*                                        */
+/******************************************/
+
+#include "FM4Alg5.h"
+
+FM4Alg5 :: FM4Alg5() : FM4Op()
+{
+    /*  We still don't make the waves here yet, because    */
+    /*  we still don't know what they will be.             */
+}  
+
+MY_FLOAT FM4Alg5 :: tick()
+{
+    MY_FLOAT temp,temp2;
+
+    temp = gains[1] * adsr[1]->tick() * waves[1]->tick();
+    temp = temp * control1;
+    waves[0]->addPhaseOffset(temp);
+    waves[3]->addPhaseOffset(twozero->lastOut());
+    temp = gains[3] * adsr[3]->tick() * waves[3]->tick();
+    twozero->tick(temp);
+    waves[2]->addPhaseOffset(temp);
+    temp = (1.0 - (control2 * 0.5)) * gains[0] * adsr[0]->tick() * waves[0]->tick();
+    temp += control2 * 0.5 * gains[2] * adsr[2]->tick() * waves[2]->tick();
+    
+    temp2 = vibWave->tick() * modDepth;         /*  Calculate amplitude mod  */
+    temp = temp * (1.0 + temp2);                /*  and apply it to output   */
+    
+    lastOutput = temp * 0.5;
+    return lastOutput;
+}
+