How playing the sound from sound card backward?

Question

hello
I write the following program for playing backward the sounds from the sound card:
package sound;
import java.io.ByteArrayOutputStream;
import javax.sound.sampled.*;
public class SoundLimiter {
      //final AudioFormat format = new AudioFormat(44100, 8, 1, true, false);
     final AudioFormat format = AudioSystem.getClip().getFormat();
     final DataLine.Info info = new DataLine.Info(SourceDataLine.class, format, 1);
     final SourceDataLine soundLine = (SourceDataLine) AudioSystem.getLine(info);
      boolean stopped = false;
      int total;
     public SoundLimiter() throws LineUnavailableException {
          TargetDataLine line;
          if (!AudioSystem.isLineSupported(info)) {
              // Handle the error ...
          // Obtain and open the line.
          try {
              line = (TargetDataLine) AudioSystem.getLine(info);
              line.open(format);
              // playing back audio
              line.start();
           // Assume that the TargetDataLine, line, has already
           // been obtained and opened.
           ByteArrayOutputStream out  = new ByteArrayOutputStream();
           int numBytesRead;
           byte[] data = new byte[line.getBufferSize() / 5];
           // Begin audio capture.
           line.start();
           soundLine.open(format);
           int totalToRead = data.length;
              while (total < totalToRead && !stopped){
                  //numBytesRead = stream.read(data, 0, numBytesRead);
                   numBytesRead =  line.read(data, 0, data.length);
                  if (numBytesRead == -1) break;
                  total += numBytesRead;
                  soundLine.write(data, 0,numBytesRead);
                  //(data, 0, numBytesRead)
          } catch (LineUnavailableException ex) {
              // Handle the error ...
               ex.getStackTrace();               
     public static void main(String[] args) {
          try {
               new SoundLimiter();
          } catch (LineUnavailableException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
}Using the above code i received the following error:
Exception in thread "main" java.lang.IllegalArgumentException: No line matching interface SourceDataLine supporting format PCM_SIGNED 44100.0 Hz, 16 bit, stereo, 4 bytes/frame, little-endian, and buffers of 1 to 1 bytes is supported.
     at javax.sound.sampled.AudioSystem.getLine(Unknown Source)
     at sound.SoundLimiter.<init>(SoundLimiter.java:12)
     at sound.SoundLimiter.main(SoundLimiter.java:59)
Edited by: 982163 on Jan 16, 2013 1:46 AM
Edited by: 982163 on Jan 16, 2013 2:32 AM

Answer 1

Well, first of all, use the tags to format your code.
Second of all, your code looks pretty horrible (fair enough, you posted in New to Java).
Lastly, the error message seems to be quite clear, you're trying to open a SourceDataLine with an unsupported format.
Where did you get this code?