playing sounds with the javax.sound package

[hannes]

Hey guys,

I've been reading the javax.sound package tutorial from sun, but i still don't understand. In the tutorial they almost only speak about getting audio from somewhere, but not playing a sound for example.
Can someone help me with this??

Hannes

[JosAH]

Hey guys,

I've been reading the javax.sound package tutorial from sun, but i still don't understand. In the tutorial they almost only speak about getting audio from somewhere, but not playing a sound for example.
Can someone help me with this??

I've been fiddling with it a bit myself lately; the following test thingy plays one major scale. Do with it what you want:

import javax.sound.midi.Instrument;
import javax.sound.midi.MidiChannel;
import javax.sound.midi.MidiDevice;
import javax.sound.midi.MidiSystem;
import javax.sound.midi.MidiUnavailableException;
import javax.sound.midi.Patch;
import javax.sound.midi.Soundbank;
import javax.sound.midi.Synthesizer;

public class SynthNote {

	public static void main(String[] args) {
		int nNoteNumber = 61; // MIDI key number
		int nVelocity = 127;

		Synthesizer synth = null;
		try {
			MidiDevice.Info[] info= MidiSystem.getMidiDeviceInfo();
			
			for (int i= 0; i < info.length; i++) {
				System.out.println(i+": "+info[i].getName()+" ("+info[i].getDescription()+")");
			}
			synth = MidiSystem.getSynthesizer();
			synth.open();
		} catch (MidiUnavailableException e) {
			e.printStackTrace();
			System.exit(1);
		}

		int nChannelNumber = 0;
		MidiChannel[] channels = synth.getChannels();
		MidiChannel channel = channels[nChannelNumber];
		int nDuration = 500;

		Soundbank bank = synth.getDefaultSoundbank();

		System.out.println("bank: " + bank);
		System.out.println("name: " + bank.getName());
		System.out.println("desc: " + bank.getDescription());

		Instrument[] instrument = bank.getInstruments();

		for (int i = 0; i < instrument.length; i++) {
			System.out.println("instr #" + i + ": " + instrument[i].getName());
		}

		synth.loadAllInstruments(bank);

		Patch patch = instrument[3].getPatch();
		int b = patch.getBank();
		int p = patch.getProgram();
		int fade= 0;

		channel.programChange(24);

		int[] inc= { 0, 2, 4, 5, 7, 9, 11, 12 };
		
		for (int i= 0; i < inc.length; i++) {

			channel.noteOn(nNoteNumber + inc[i], nVelocity);

			try {
				Thread.sleep(nDuration);
			} catch (InterruptedException e) {
			}

			/*
			 * Turn the note off.
			 */
			channel.noteOff(nNoteNumber + inc[i], fade);
		}
		
		try {
			Thread.sleep(2000);
		} catch (InterruptedException e) {
		}

		synth.close();
	}

}

kind regards,

Jos

[hannes]

This is what i need, thanks. Do you know how to play a sound of applauding people?

Hannes

[DarrylBurke]

You might find the code I posted at response #5 in this thread on another forum useful.
Java Sound - Java soundbank - certain patches won't play or have wrong sound???

db

[JosAH]

This is what i need, thanks. Do you know how to play a sound of applauding people?

I don't think you can't do this with MIDI; to me that entire MIDI engine is like the old mellotron, i.e. if you don't have an "applaus tape" you can't select it nor play it; I must confess that I know next to nothing about MIDI (just fiddling with it) so I could be totally wrong here ...

kind regards,

Jos

[DarrylBurke]

import javax.sound.midi.*;

public class Applause implements Runnable {

  private Synthesizer synth;
  private MidiChannel channel;

  public static void main(String[] args) {
    new Applause().applaud();
  }

  private void applaud() {
    if (!setUpMidi()) {
      System.out.println("Unable to play MIDI");
      return;
    }
    new Thread(this).start();
  }

  private boolean setUpMidi() {
    try {
      synth = MidiSystem.getSynthesizer();
      synth.open();
      channel = synth.getChannels()[0];
      channel.programChange(0, 126);
      return true;
    } catch (MidiUnavailableException ex) {
      ex.printStackTrace();
    }
    return false;
  }

  @Override
  public void run() {
    try {
      for (int i = 0; i < 3; i++) {
        channel.noteOn(40, 64);
        Thread.sleep(100);
        channel.noteOn(47, 64);
        Thread.sleep(100);
        channel.noteOn(52, 64);
        Thread.sleep(100);
        channel.noteOn(56, 64);
        Thread.sleep(1000);
      }
      channel.noteOff(56, 64);
      Thread.sleep(1000);
      channel.noteOff(52, 64);
      Thread.sleep(1000);
      channel.noteOff(47, 64);
      Thread.sleep(1000);
      channel.noteOff(40, 64);
    } catch (InterruptedException ex) {
      ex.printStackTrace();
    }
  }
}

db

[hannes]

I downloaded a applause soundeffect and saved it in my documents. Now, how can i play it?

Hannes

[JosAH]

I downloaded a applause soundeffect and saved it in my documents. Now, how can i play it?

Hannes

Did you try Darryl's approach? It works.

kind regards,

Jos

[hannes]

I really have to play a sound i've downloaded, i also have to play other sounds so