import jm.audio.AudioObject;
import jm.audio.io.SampleOut;
import jm.audio.synth.Add;
import jm.audio.synth.Oscillator;
import jm.audio.synth.Value;
import jm.audio.synth.Volume;
/**
* A basic amplitude modulation creating a complex timbre
*
* @author Andrew Brown
*/
public final class SimpleAMInst 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;
//----------------------------------------------
// Constructor
//----------------------------------------------
/**
* Basic default constructor to set an initial
* sampling rate.
*
* @param sampleRate
*/
public SimpleAMInst(int sampleRate) {
this.sampleRate = sampleRate;
this.channels = 1;
}
//----------------------------------------------
// Methods
//----------------------------------------------
/**
* Initialisation method used to build the objects that
* this instrument will use.
*/
public void createChain() {
Oscillator modulator = new Oscillator(this, Oscillator.SINE_WAVE,
this.sampleRate, 1);
modulator.setFrqRatio((float) 7.23);
Volume wtAmp = new Volume(modulator);
Value offsetAmp = new Value(this, this.sampleRate, 1, (float) 0.5);
Add add = new Add(new AudioObject[]{wtAmp, offsetAmp});
Oscillator carrier = new Oscillator(add,
Oscillator.SINE_WAVE, Oscillator.AMPLITUDE);
SampleOut sout = new SampleOut(carrier);
}
}