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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);
    }
}