package vafusion.inst;
import jm.audio.io.*;
import jm.audio.synth.*;
import jm.music.data.Note;
import jm.audio.AudioObject;
import jm.audio.AOException;
/**
* A basic vibrato from FM synthesis
* @author Andrew Brown
*/
public final class VibratoInstRT extends jm.audio.Instrument{
//----------------------------------------------
// Attributes
//---------------------------------------------
/** The number of channels */
private int channels;
/** The deviation index */
private int modIndex;
/** The frequency ratio from the carrier frequency (the notes pitch) */
private float frqRatio;
private int sampleRate;
//----------------------------------------------
// Constructor
//----------------------------------------------
/**
* Basic default constructor to set an initial
* sampling rate.
* @param sampleRate
*/
public VibratoInstRT(int sampleRate){
this(sampleRate, 1);
}
/**
* A constructor to set an initial
* sampling rate and number of channels.
* @param sampleRate
* @param channels The number of channels
*/
public VibratoInstRT(int sampleRate, int channels){
this.sampleRate = sampleRate;
this.channels = channels;
}
//----------------------------------------------
// Methods
//----------------------------------------------
/**
* Initialisation method used to build the objects that
* this instrument will use
*/
@Override
public void createChain()throws AOException{
// modulator
Value modFrequency = new Value(this, this.sampleRate, 1, (float)5.0);
Oscillator modulator = new Oscillator(modFrequency,
Oscillator.SINE_WAVE, Oscillator.FREQUENCY);
modulator.setAmp((float)8.0);
// constant
Value constFreq = new Value(this, this.sampleRate, this.channels, (float)260.0);
Add add = new Add(new AudioObject[] {constFreq, modulator});
// carrier
Oscillator carrier = new Oscillator(add,
Oscillator.SINE_WAVE, Oscillator.FREQUENCY);
Envelope env2 = new Envelope(carrier,
new double[] {0.0, 0.0, 0.1, 1.0, 1.0, 0.0});
Volume amp = new Volume(env2, (float)1.0);
//SampleOut sout = new SampleOut(amp);
}
}