import jm.audio.AudioObject;
import jm.audio.io.SampleIn;
import jm.audio.io.SampleOut;
import jm.audio.synth.*;
public final class SubtractiveSampleInst extends jm.audio.Instrument {
//----------------------------------------------
// Attributes
//----------------------------------------------
/**
* the name of the sample file
*/
private String fileName;
/**
* How many channels is the sound file we are using
*/
private int numOfChannels;
/**
* the base frequency of the sample file to be read in
*/
private double baseFreq;
/**
* should we play the wholeFile or just what we need for note duration
*/
private boolean wholeFile;
/**
* The envelope sustain value
*/
private double sustain;
/**
* low pass filter cutoff
*/
private int cutoff;
/**
* Envelope attributes
*/
private int attack, decay, release;
/**
* Depth of filter modulation (0.0 - 1.0)
*/
private double modAmount = 0.9;
/**
* Speed of filter modulation in Hertz
*/
private double modRate = 0.05;
/**
* The volume of the squarewave sub oscillator
*/
private double subAmp = 0.0;
//----------------------------------------------
// Constructor
//----------------------------------------------
/**
* Constructor
*/
public SubtractiveSampleInst(String fileName) {
this(fileName, 440.00, 500);
}
public SubtractiveSampleInst(String fileName, double baseFreq) {
this(fileName, baseFreq, 500);
}
public SubtractiveSampleInst(String fileName, double baseFreq, int cutoff) {
this(fileName, baseFreq, cutoff, 2, 50, 0.4, 200);
}
public SubtractiveSampleInst(String fileName, double baseFreq, int cutoff, int attack, int decay, double sustain, int release) {
this.fileName = fileName;
this.baseFreq = baseFreq;
this.cutoff = cutoff;
this.attack = attack;
this.decay = decay;
this.release = release;
this.sustain = sustain;
}
//----------------------------------------------
// Methods
//----------------------------------------------
public void setModAmount(double val) {
this.modAmount = val;
}
public void setModDepth(double val) {
this.modAmount = val;
}
public void setModRate(double val) {
this.modRate = val;
}
public void setWholeFile(boolean val) {
this.wholeFile = val;
}
public void setSubAmp(double val) {
this.subAmp = val;
}
/**
* Create the Audio Chain for this Instrument
* and assign the primary Audio Object(s). The
* primary audio object(s) are the one or more
* objects which head up the chain(s)
*/
public void createChain() {
//define the chain
SampleIn sin = new SampleIn(this, fileName);
sin.setWholeFile(wholeFile);
ReSample reSample = new ReSample(sin, this.baseFreq);
// modulate filter cutoff
Oscillator sineMod = new Oscillator(this, Oscillator.SINE_WAVE, sin.getSampleRate(),
sin.getChannels(), Oscillator.FREQUENCY, (float) modRate);
sineMod.setAmp((float) this.modAmount * this.cutoff);
// sub
Oscillator subOsc = new Oscillator(this, Oscillator.SQUARE_WAVE, sin.getSampleRate(),
sin.getChannels());
subOsc.setFrqRatio(0.5f);
subOsc.setAmp((float) subAmp);
Add adder = new Add(new AudioObject[]{reSample, subOsc});
// filter
Filter filt = new Filter(new AudioObject[]{adder, sineMod}, this.cutoff, Filter.LOW_PASS);
ADSR env = new ADSR(filt, attack, decay, sustain, release);
Volume vol = new Volume(env);
StereoPan span = new StereoPan(vol);
SampleOut sout = new SampleOut(span);
}
}