playing sounds with the javax.sound package

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

Quote:

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Originally Posted by 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??

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

Code:

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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();
        }

}

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kind regards,

Jos

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

Hannes

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

Quote:

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Originally Posted by hannes

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

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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

Code:

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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();
    }
  }
}

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db

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

Hannes

Quote:

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Originally Posted by hannes

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

Hannes

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Did you try Darryl's approach? It works.

kind regards,

Jos

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