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FM Class Reference

STK abstract FM synthesis base class. More...

#include <FM.h>

Inheritance diagram for FM::

List of all members.

Public Methods
	FM (int operators=4)
	Class constructor, taking the number of wave/envelope operators to control.
virtual	~FM ()
	Class destructor.
void	clear ()
	Reset and clear all wave and envelope states.
void	loadWaves (const char **filenames)
	Load the rawwave filenames in waves.
virtual void	setFrequency (MY_FLOAT frequency)
	Set instrument parameters for a particular frequency.
void	setRatio (int waveIndex, MY_FLOAT ratio)
	Set the frequency ratio for the specified wave.
void	setGain (int waveIndex, MY_FLOAT gain)
	Set the gain for the specified wave.
void	setModulationSpeed (MY_FLOAT mSpeed)
	Set the modulation speed in Hz.
void	setModulationDepth (MY_FLOAT mDepth)
	Set the modulation depth.
void	setControl1 (MY_FLOAT cVal)
	Set the value of control1.
void	setControl2 (MY_FLOAT cVal)
	Set the value of control1.
void	keyOn ()
	Start envelopes toward "on" targets.
void	keyOff ()
	Start envelopes toward "off" targets.
void	noteOff (MY_FLOAT amplitude)
	Stop a note with the given amplitude (speed of decay).
virtual MY_FLOAT	tick ()=0
	Pure virtual function ... must be defined in subclasses.
virtual void	controlChange (int number, MY_FLOAT value)
	Perform the control change specified by number and value (0.0 - 128.0).

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Detailed Description

STK abstract FM synthesis base class.

This class controls an arbitrary number of waves and envelopes, determined via a constructor argument.

Control Change Numbers:

• Control One = 2
• Control Two = 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.

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The documentation for this class was generated from the following file:

• FM.h

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The Synthesis ToolKit in C++ (STK)

©1995-2002 Perry R. Cook and Gary P. Scavone. All Rights Reserved.