Version 4.0

include/HevyMetl.h

@@ -0,0 +1,52 @@
+/***************************************************/
+/*! \class HevyMetl
+    \brief STK heavy metal FM synthesis instrument.
+
+    This class implements 3 cascade operators with
+    feedback modulation, also referred to as
+    algorithm 3 of the TX81Z.
+
+    \code
+    Algorithm 3 is :    4--\
+                    3-->2-- + -->1-->Out
+    \endcode
+
+    Control Change Numbers: 
+       - Total Modulator Index = 2
+       - Modulator Crossfade = 4
+       - LFO Speed = 11
+       - LFO Depth = 1
+       - ADSR 2 & 4 Target = 128
+
+    The basic Chowning/Stanford FM patent expired
+    in 1995, but there exist follow-on patents,
+    mostly assigned to Yamaha.  If you are of the
+    type who should worry about this (making
+    money) worry away.
+
+    by Perry R. Cook and Gary P. Scavone, 1995 - 2002.
+*/
+/***************************************************/
+
+#if !defined(__HEVYMETL_H)
+#define __HEVYMETL_H
+
+#include "FM.h"
+
+class HevyMetl : public FM
+{
+ public:
+  //! Class constructor.
+  HevyMetl();
+
+  //! Class destructor.
+  ~HevyMetl();
+
+  //! Start a note with the given frequency and amplitude.
+  void noteOn(MY_FLOAT frequency, MY_FLOAT amplitude);
+
+  //! Compute one output sample.
+  MY_FLOAT tick();
+};
+
+#endif