import jm.audio.AudioObject;
import jm.audio.io.SampleOut;
import jm.audio.synth.*;
/**
* An amplitude modulation synthesis instrument
* which uses a noise modulation source
*
* @author Andrew Brown
*/
public final class FMNoiseInst extends jm.audio.Instrument {
//----------------------------------------------
// Attributes
//----------------------------------------------
/**
* the sample rate passed to the instrument
*/
private int sampleRate;
/**
* the sample rate passed to the instrument
*/
private int channels;
private int modIndex;
//----------------------------------------------
// Constructor
//----------------------------------------------
/**
* Basic default constructor to set an initial
* sampling rate.
*
* @param sampleRate
*/
public FMNoiseInst(int sampleRate, int modIndex, int channels) {
this.sampleRate = sampleRate;
this.channels = channels;
this.modIndex = modIndex;
}
//----------------------------------------------
// Methods
//----------------------------------------------
/**
* Initialisation method used to build the objects that
* this instrument will use.
*/
public void createChain() {
// modulator
Noise modulator = new Noise(this, Noise.STEP_NOISE, this.sampleRate, this.channels);
//modulator.setFrqRatio(frqRatio);
modulator.setAmp((float) modIndex);
Envelope env = new Envelope(modulator, new double[]{0.0, 1.0, 1.0, 0.0});
// constant
Value constFreq = new Value(this, this.sampleRate, this.channels, Value.NOTE_PITCH);
Add add = new Add(new AudioObject[]{constFreq, env});
// carrier
Oscillator carrier = new Oscillator(add, Oscillator.SINE_WAVE, Oscillator.FREQUENCY);
Envelope env2 = new Envelope(carrier, new double[]{0.0, 0.0, 0.02, 1.0, 1.0, 0.0});
Volume amp = new Volume(env2);
StereoPan pan = new StereoPan(amp);
SampleOut sout = new SampleOut(pan);
}
}