/**
 * FMPair creates pair of sine wave oscillators.
 */
package jmslexamples.jsyn;
import com.softsynth.jsyn.*;

public class FMPairBlaster extends SynthCircuit {

	public SineOscillator myCarrier;
	public SineOscillator myModulator;
	public ExponentialLag myLag;
	public AddUnit myAdd;

	public SynthInput amplitude;
	public SynthOutput output;

	public FMPairBlaster(double halfLife) throws SynthException {
		/* Make FM pair. */
		add(myCarrier = new SineOscillator());
		add(myModulator = new SineOscillator());
		add(myLag = new ExponentialLag());
		add(myAdd = new AddUnit());

		myModulator.output.connect(myAdd.inputA);
		myAdd.inputB.setSignalType(Synth.SIGNAL_TYPE_OSC_FREQ); /* So we can use Hz */
		myAdd.output.connect(myCarrier.frequency);

		myLag.current.setSignalType(Synth.SIGNAL_TYPE_OSC_FREQ); /* So we can use Hz */
		myLag.output.connect(myModulator.amplitude);
		myLag.halfLife.set(halfLife);

		addPort(amplitude = myCarrier.amplitude);
		addPort(output = myCarrier.output);
	}

	public void trigger(int timestamp, double carrierFrequency, double modFrequency, double modIndex)
		throws SynthException {
		myModulator.frequency.set(timestamp, modFrequency);
		myAdd.inputB.set(timestamp, carrierFrequency);
		/* Calculate random modulation index and ping modulator. */
		myLag.current.set(timestamp, modIndex * carrierFrequency);
		start(timestamp);
	}

}