package tones1;
public class Tones1
{
/**
* @param args the command line arguments
*/
public static void main(String[] args)
{
int tone = 750;
long duration = 200;
SynthAudioClip MyDot = new SynthAudioClip(750, duration);
SynthAudioClip MyDash = new SynthAudioClip(750, 3*duration);
SynthAudioClip MyCharSpace = new SynthAudioClip(20000, duration);
SynthAudioClip MyWordSpace = new SynthAudioClip(0, 5*duration);
MyDot.play();
MyCharSpace.play();
MyDash.play();
MyCharSpace.play();
}
}
package tones1;
// SynthAudioClip - a synthesized audio clip
import java.applet.AudioClip;
import java.io.IOException;
import java.io.InputStream;
import sun.audio.AudioData;
import sun.audio.AudioDataStream;
import sun.audio.AudioPlayer;
import sun.audio.ContinuousAudioDataStream;
//
// Copyright (C) 1996 by Jef Poskanzer <jef@mail.acme.com>. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE.
//
// Visit the ACME Labs Java page for up-to-date versions of this and other
// fine Java utilities: [url]http://www.acme.com/java/[/url]
// package Acme;
// import java.io.*;
// import java.applet.AudioClip;
// import sun.audio.*;
/// A synthesized audio clip.
// <P>
// Generates a synthetic audio tone of a specified frequency and duration.
// <P>
// <A HREF="/resources/classes/Acme/SynthAudioClip.java">Fetch the software.</A><BR>
// <A HREF="/resources/classes/Acme.tar.gz">Fetch the entire Acme package.</A>
public class SynthAudioClip implements AudioClip
{
private static final long SAMPLES_PER_SEC = 8000;
AudioData data;
InputStream stream;
/// Constructor.
// Generates a single tone.
// @param hz the frequency of the tone
// @param millis the duration of the tone, in milliseconds
// @param amplitude the loudness of the tone, from 0 to 32767
public SynthAudioClip( int hz, long millis, double amplitude )
{
int samples = (int) ( millis * SAMPLES_PER_SEC / 1000 );
byte[] buf = new byte[samples];
for ( int i = 0; i < buf.length; ++i )
buf[i] = toUlaw( (int) (
amplitude *
Math.sin( 2.0D * Math.PI * i * hz / SAMPLES_PER_SEC ) ) );
data = new AudioData( buf );
}
/// Constructor.
// Generates a single tone, with default loudness.
// @param hz the frequency of the tone
// @param millis the duration of the tone, in milliseconds
public SynthAudioClip( int hz, long millis )
{
this( hz, millis, 16384.0D );
}
private static final int[] expLut = {
0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7
};
private static final int CLIP = 32635;
private static final int BIAS = 0x84;
private static byte toUlaw( int linear )
{
int sign, exponent, mantissa;
byte ulaw;
// Get the sample into sign-magnitude.
if ( linear >= 0 )
sign = 0;
else
{
sign = 0x80;
linear = -linear;
}
if ( linear > CLIP )
linear = CLIP; // clip the magnitude
// Convert from 16 bit linear to ulaw.
linear = linear + BIAS;
exponent = expLut[( linear >> 7 ) & 0xFF];
mantissa = ( linear >> ( exponent + 3 ) ) & 0x0F;
ulaw = (byte) ( ~ ( sign | ( exponent << 4 ) | mantissa ) );
return ulaw;
}
public synchronized void play()
{
stop();
if ( data != null )
{
stream = new AudioDataStream( data );
AudioPlayer.player.start( stream );
}
}
public synchronized void loop()
{
stop();
if ( data != null )
{
stream = new ContinuousAudioDataStream( data );
AudioPlayer.player.start( stream );
}
}
public synchronized void stop()
{
if ( stream != null )
{
AudioPlayer.player.stop( stream );
try
{
stream.close();
}
catch ( IOException iignore ) {}
stream = null;
}
}
}
LinkBack URL
About LinkBacks
Threading problem? - hopefully in the correct forum this time
Reply With Quote
Related threads:
