Name: jl125535			Date: 11/18/2002


FULL PRODUCT VERSION :
java version "1.4.1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1-b21)
Java HotSpot(TM) Client VM (build 1.4.1-b21, mixed mode)

java version "1.4.0_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0_01-b03)
Java HotSpot(TM) Client VM (build 1.4.0_01-b03, mixed mode)

The behaviour is virtually identical in 1.4.1_01.  The 16bit sounds sound slightly different ?!?  But the click still occurs on 8bit. 

FULL OPERATING SYSTEM VERSION :
Microsoft Windows 2000 [Version 5.00.2195]


A DESCRIPTION OF THE PROBLEM :
We are getting louds clicks when playing 8-bit mono WAV
files through the javax.media.sound.sampled API.  When
these files are converted to 16-bit mono WAV files, the
clicking problems disappear.

A scan through the bug database reveals bug 4266439 which
was previously fixed 1999-11-10.  What we are seeing
appears to exactly match the symptoms of this bug - is it
possible that it has re-appeared?

We are often looping very short WAV files, and this bug can
therefore be quite apparent.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Play very short 8-bit WAV file (can provide if
necessary).  Loop Repeatedly.  Listen to result.

EXPECTED VERSUS ACTUAL BEHAVIOR :
Sound should play acceptably.  Instead, loud clicks / pops
are heard as the sound loops.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.net.URL;
import java.io.*;

public class AudioTest
{
    public static void main(String[] args)
    {
        new AudioTest();
        System.exit(0);
    }

    public AudioTest()
    {
        try
        {
            Clip theClip = (Clip) AudioSystem.getLine(
                new Line.Info(Clip.class));
            AudioInputStream ais1 = 
                AudioSystem.getAudioInputStream(
                    new File("test8bitmono.wav"));
            AudioInputStream ais2 = 
                AudioSystem.getAudioInputStream(
                    new File("test8bitstereo.wav"));
            AudioInputStream ais3 = 
                AudioSystem.getAudioInputStream(
                    new File("test16bitmono.wav"));
            AudioInputStream ais4 = 
                AudioSystem.getAudioInputStream(
                    new File("test16bitstereo.wav"));
            AudioInputStream[] aiss = new AudioInputStream[4];
            aiss[0] = ais1;
            aiss[1] = ais2;
            aiss[2] = ais3;
            aiss[3] = ais4;

            for (int i=0; i < aiss.length; i++)
            {
                AudioInputStream ais = aiss[i];
                System.out.println("ais = " + ais.getFormat());
                theClip.open(ais);
                theClip.loop(Clip.LOOP_CONTINUOUSLY);

                try
                {
                    Object o = new Object();
                    synchronized(o)
                    {
                        o.wait(2000);
                    }
                }
                catch (InterruptedException iex)
                {
                }
                theClip.close();
            }
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }
}

---------- END SOURCE ----------

Release Regression From : 1.3.1
The above release value was the last known release where this 
bug was known to work. Since then there has been a regression.

(Review ID: 159396) 
======================================================================
Verified in Sol 9, RH8.0, win 2000 Professional SP3.

###@###.### 2003-03-03