AudioMix.java

import java.io.*;
import javax.sound.sampled.*;


public class AudioMix{


 public static void main(String args[]) throws Exception{


      AudioFormat audioFormat;
      TargetDataLine targetDataLine;
      AudioInputStream audioInputStream;
      SourceDataLine sourceDataLine;

      Mixer.Info[] mixerInfo = AudioSystem.getMixerInfo();
      System.out.println("Available mixers:");
      for(int cnt = 0; cnt < mixerInfo.length;cnt++){
        System.out.println(mixerInfo[cnt].getName());
      }


      audioFormat = getAudioFormat();
      DataLine.Info dataLineInfo1 =new DataLine.Info(
                            TargetDataLine.class,audioFormat);
      DataLine.Info dataLineInfo2 =new DataLine.Info(
                            SourceDataLine.class,audioFormat);

      Mixer mixer = AudioSystem.getMixer(mixerInfo[3]);
      targetDataLine = (TargetDataLine)mixer.getLine(dataLineInfo1);
      sourceDataLine = (SourceDataLine)mixer.getLine(dataLineInfo2);
      targetDataLine.open(audioFormat);
      sourceDataLine.open(audioFormat);
    targetDataLine.start();
    sourceDataLine.start();




    audioInputStream = AudioSystem.getAudioInputStream
                    (new File("test.wav"));
    int nBytesRead = 0;
    byte[] abData = new byte[1024*2];
    while (nBytesRead != -1)
    {
        nBytesRead = audioInputStream.read(abData, 0, abData.length);
        System.out.println(nBytesRead);
        if (nBytesRead >= 0)
        {
            sourceDataLine.write(abData, 0, nBytesRead);
        }
    }


        System.out.println("here");



    AudioInputStream ais2=new AudioInputStream(targetDataLine);
        System.out.println("here1");
    AudioSystem.write(ais2,AudioFileFormat.Type.WAVE,new File("test_temp.wav"));
        System.out.println("here2");







    }


    public static AudioFormat getAudioFormat(){
        try{
                File soundFile = new File("test.wav");
            AudioInputStream audioInputStream = null;
            audioInputStream = AudioSystem.getAudioInputStream
                        (soundFile);
            AudioFormat format = audioInputStream.getFormat();
            return format;
        }catch(Exception e){return null;}
  }
}