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import jm.audio.io.SampleOut;
import jm.audio.synth.Envelope;
import jm.audio.synth.Oscillator;
import jm.audio.synth.Volume;

/**
 * A basic amplitude modulation that causes a warbing trumolo effect
 *
 * @author Andrew Brown
 */

public final class TremoloInst 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 TremoloInst(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,
                this.channels, Oscillator.FREQUENCY, (float) 5.0);
        Volume vol = new Volume(modulator, 10.0f);
        Oscillator carrier = new Oscillator(vol,
                Oscillator.SINE_WAVE, Oscillator.AMPLITUDE);
        Envelope env2 = new Envelope(carrier,
                new double[]{0.0, 0.0, 0.1, 1.0, 1.0, 0.0});
        SampleOut sout = new SampleOut(env2);
    }
}