Problem in audio formate voice chatting applet

hi
i've just finished making voice chatting project but the voice sometimes sent with big noice and i can't her the user in the other side
i make it as applet opend from the web and the connection is successfully established , i use cloudegarden in my project
the audio formate i use pcm 44100 hz 16 bit sterio in the client
and 11025 hz 16 bit sterio in the server , i was have to make this formate because the others not working will with me(it throw exception)
thanks for ur concern

Hello,
could you please send me the source code.Even i'm working on a similar project. My id is [email protected]
Thanks
PN

Similar Messages

Problem in voice chat applet

hi all,
I am developing a Voice chat applet using java(JDK1.4,JMF). If i run my programs of transmitting voice and receiving voice from one machine to another machine(Without applet), its working fine.
When i am sending voice from my server machine, and receiving on someother machine by application, its working fine.
But if i am using my applet from some other machine(Other then server) its creating problems. Its showing some errors.
Can you suggest some solutions??
Thanks in advance.
Abhishek

hi,
i also develop the voice chat application. can you send your source code to me. may be i can help you to solve your problems.
my email is [email protected]

Voice Chat Applet

Hey all,
I want to develop a voice chat applet in Java. (similar to the one used in Yahoo chat rooms). I know basic Java, but I don't know where to start in developing an applet like this. I don't know what libraries or protocols I need to be focusing on. If anyone can offer me some advice or the steps necessary to create this applet, I would be very appreciative.
Thank you,
Khanathor

Yeah, you would deserve thanks if
1) I hadn't spent all day doing research.Sorry, but my mind-reading device wasn't working. So sorry that I couldn't tell that you had done that. Maybe it would have made a difference if you had done something like MENTIONING it in the first place.
2) Your search query wasn't even what I was
requesting assistance for.Oh, sorry again for not reading your mind as to what you were looking for other than a response for basically "I don't even know where to begin".
3) Your response didn't so clearly reflect your
arrogance.That's ok. Your post clearly reflected your lack of initiative and intelligence.

IChat Problem. A/V,Voice Chat,Screen Sharing.(Please Help)

I have own a Macbook for a year.but never been try to use an i chat.
and now i had a friend that just bought a Macbook last week and i ask him to create iChat account.
Me and him using a Google Talk account.at first chat with IM,everything is ok.
After that i try to use A/V chat,Screen Sharing and Voice chat..every time he's accept the invitation it's take a long time to process and after that it's comes out with this window. Ask me to send the report to apple about the error.I have try to do A/V chat,Screen Sharing and Voice chat so many time and its still come out with the same result..??please help me..BTW i have check all the system and program sharing.everything is goos.please again help me..

Hi,
Welcome to the  Discussions
A year old MacBook could be running OS 10.5.x (Leopard) and iChat 4.x.x
Or it could have come with Snow Leopard (10.6.x) and iChat 5.x.x if updated.
Your sepcs say that you are running Snow Leopard (10.6.4)
Can you go to the System Preferences > Security and if the Firewall is On can you go to the Advanced tab ?
IS Allow Signed Apps in use ?
If so has iChat been Added to the List ?
Also Stealth needs to be Off.
Have you allowed the ports iChat uses through your Routing device ?
Most domestic devices only have the first 1024 ports open and iChat uses ports above this figure.
If your device has it, Enable UPnP to open the ports.
Nothing in System Preferences > Sharing needs to be On (Selected) for iChat to do Screen Sharing.
9:01 PM Saturday; July 17, 2010
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

Hi all. I want to make audio chat with my brother. I use iChat on my MBP. He uses Gtalk on his windows PC. The problem is that the audio icon is gray. Is there anyway? Can iChat make voice chat with Gtalk on windows?

Hi all. I want to make audio chat with my brother. I use iChat on my MBP. He uses Gtalk on his windows PC. The problem is that the audio icon is gray so I cannot start audio chat. Is there anyway? Can iChat make voice chat with Gtalk on windows or not? I am confused.

HI,
You need to satisfy several things along the way
Account type
You need to have a Jabber or Google mail Account your self.
If you have a Google Mail Account then it needs the "Talk" option Enabled in your Google account Settings ( A Facebook with "Chat" enabled is also a valid Jabber ID to use in iChat).
Connection Method
This is about which apps can connect to which apps for Video ro Audio to work.
iChat Video when using a Jabber account is iChat to iChat Only.
iChat connects using a process called SIP (Session Initiation Protocol)
Jabber based Apps if they have an A/V module connect using protocol called Jingle.
Needless to say Google do their own version of this that is written in to the web Browser Plugin that allows Video Chats (there are PC and Mac versions), and in the PC app called GoogleTalk.
However it is also not that compatible with other Jabber apps.
See Jingle here
This claims, now, that Google had a hand in writing the Protocol.
Also in the "Clients Supporting Jingle" list many more version of Google products are mentioned with extended info. (it suggests that someone at Google has been editing the page).
Can iChat make voice chat with Gtalk on windows or not?
The specific answer to this to be clear is NO.
We are talking about different Apps (or web Browser Plugins) using different Internet Protocols that are not compatible.
The simplest thing is to get the Web Browser Plugin (However there can be issues with the Flash Plugin)
At one time Google used Flash to do Video Chats and it would seem their Plugin is very close to this part of Flash.
See the Known Issues and the "Google Talk Plugin Disables iSight On Mac" item.
Options
Use a Web Browser yourself with the Plugin.
Use a Flash Base Site such as MeBeam (Flash has to be enabled in your Browser and the instructions are simple on the page)
Try to find a Jingle capable Mac Jabber Client (app) ( I have not found one).
9:42 PM Monday; July 23, 2012
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 iMac 2.5Ghz 5i 2011 (Lion 10.7.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
"Limit the Logs to the Bits above Binary Images."  No, Seriously

Problem loading the chat applet, red x mark sign..

Hello all - hopefully this is the correct place for this post. I've been trying to load a java enabled chat room, and keep getting a red X in the top left corner (java applet failed, etc).
Java chat applet fails to load in the following website www.chat-web.com, but loads in the other websites. the following is the version i have installed in my computer. Version 6 Update 12 (build 1.6.0_12-b04). I have visited the help section of the website in which java applet fails to load and tried all the following steps,
1) I cleared all the temp files from the internet options.
2) cleared the cache in the java plug-in
3) disabled the pop-up blocker
insipite of the above steps the problem still persists..
here is a screen shot of the error > http://i42.tinypic.com/2pzwhvp.jpg
here is the details of the error :
Java Plug-in 1.6.0_12
Using JRE version 1.6.0_12 Java HotSpot(TM) Client VM
User home directory = C:\Users\Guest
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
load: class com.chatspace.v20090.Chat not found.
java.lang.ClassNotFoundException: com.chatspace.v20090.Chat
     at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
     at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
     at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.net.ConnectException: Connection timed out: connect
     at java.net.PlainSocketImpl.socketConnect(Native Method)
     at java.net.PlainSocketImpl.doConnect(Unknown Source)
     at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
     at java.net.PlainSocketImpl.connect(Unknown Source)
     at java.net.SocksSocketImpl.connect(Unknown Source)
     at java.net.Socket.connect(Unknown Source)
     at sun.net.NetworkClient.doConnect(Unknown Source)
     at sun.net.www.http.HttpClient.openServer(Unknown Source)
     at sun.net.www.http.HttpClient.openServer(Unknown Source)
     at sun.net.www.http.HttpClient.<init>(Unknown Source)
     at sun.net.www.http.HttpClient.New(Unknown Source)
     at sun.net.www.http.HttpClient.New(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
     at java.net.HttpURLConnection.getResponseCode(Unknown Source)
     at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
     at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
     at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     ... 7 more
Exception: java.lang.ClassNotFoundException: com.chatspace.v20090.Chat
Does this look like a chat room error? I think my side is fine, but I could be wrong. I'm not the best technical person, but just know the basics.
Anyone have any ideas?
Thanks!
livelife

Hi. Thank you for reply. I tried the steps suggested by you, but it still shows the same errors, i e-mailed to chat-web.com as well but seems the e-mail is invalid. i tried to load the chat rooms in my desktop pc too, i get the same error,
Java Plug-in 1.6.0_13
Using JRE version 1.6.0_13 Java HotSpot(TM) Client VM
User home directory = C:\Documents and Settings\Intel
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
load: class com.chatspace.v20090.Chat not found.
java.lang.ClassNotFoundException: com.chatspace.v20090.Chat
     at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
     at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
     at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.net.SocketException: Network is unreachable: connect
     at java.net.PlainSocketImpl.socketConnect(Native Method)
     at java.net.PlainSocketImpl.doConnect(Unknown Source)
     at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
     at java.net.PlainSocketImpl.connect(Unknown Source)
     at java.net.SocksSocketImpl.connect(Unknown Source)
     at java.net.Socket.connect(Unknown Source)
     at sun.net.NetworkClient.doConnect(Unknown Source)
     at sun.net.www.http.HttpClient.openServer(Unknown Source)
     at sun.net.www.http.HttpClient.openServer(Unknown Source)
     at sun.net.www.http.HttpClient.<init>(Unknown Source)
     at sun.net.www.http.HttpClient.New(Unknown Source)
     at sun.net.www.http.HttpClient.New(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
     at java.net.HttpURLConnection.getResponseCode(Unknown Source)
     at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
     at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
     at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     ... 7 more
Exception: java.lang.ClassNotFoundException: com.chatspace.v20090.Chat
lifelive

Audio format problem...how to change in FCE?

We're capturing footage to FCE from a ZR800 Canon Camcorder. After each capture we get an error message that our audio sample rate does not match the audio sample rate of our project...
Both are at 48 KHz, but our audio format is 32 bit floating integer as opposed to the sequence set up of 16 bit.
Can't find a place in FCE to change our projects to 32 bit floating integer... is that a problem? How to correct?
Thanks in advance...
R. Dale McCarver

32-bit float is not the problem. Most likely the sample rate of your media does not match the sample rate of the 48K preset. Go to Easy Setup and check Show All. There is a preset for working with audio with a sample rate of 32K. You will need to recapture your material using the correct preset. Make sure you make a new sequence after that, which will also be in 32K. In future you should switch your camera to shooting in 48K or 16-bit as the camera manufacturers call it.

Audio and Video Chat problems

I have a G5 at home and have a MacBook Pro on the road and I am trying to video chat with my finacee (me using my mac account, her using an AOL IM account). We can text chat and send files through iChat, but if we try audio or video chat we both get the following error message. We both tried a test buddy (appleu3test01) and it worked fine, but we still can not chat with each other. I don't know what else to do.
There was a communication error during your chat. iChat encountered errors while communicating with participants in this chat. You can send details about the problems to Apple to help improve future versions of iChat.
Details:
Date/Time: 2006-12-18 00:24:29.767 +0000
OS Version: 10.4.8 (Build 8N1037)
Report Version: 4
iChat Connection Log:
AVChat started with ID 3420032075.
[email protected]: State change from AVChatNoState to AVChatStateWaiting.
0x19d159e0: State change from AVChatNoState to AVChatStateInvited.
0x19d159e0: State change from AVChatStateInvited to AVChatStateConnecting.
[email protected]: State change from AVChatStateWaiting to AVChatStateConnecting.
[email protected]: State change from AVChatStateConnecting to AVChatStateEnded.
Chat ended with error -8
0x19d159e0: State change from AVChatStateConnecting to AVChatStateEnded.
Chat ended with error -8
Video Conference Error Report:
Video Conference Support Report:
Video Conference User Report:
Binary Images Description for "iChat":
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0x94050000 - 0x94091fff libsqlite3.0.dylib /usr/lib/libsqlite3.0.dylib
0x94099000 - 0x940d3fff com.apple.opengl 1.4.13 /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLImage.dyl ib
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0x94161000 - 0x9419ffff com.apple.vmutils 4.0.2 (93.1) /System/Library/PrivateFrameworks/vmutils.framework/Versions/A/vmutils
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Hi THall12,
Welcome to the Apple Discussions
This is the important bit.
Chat ended with error -8
Video Conference Error Report:
Video Conference Support Report:
Video Conference User Report:
Binary Images Description for "iChat":
If the process has moved to port 5060 then the SIP data from your end at least should show here.
Which Ports and WHY http://www.ralphjohnsuk.dsl.pipex.com/page3.html
Other Log views
Scroll down this page http://www.ralphjohnsuk.dsl.pipex.com/page16.html
Options to check.
Your Mac Firewall - Has it got the iChat A?V ports if ON ?
Your modem - Have the ichat ports been enabled here ?
Any other router involved ?
Does your ISP block port 5060 for a VoIP service they offer ?
9:12 PM Tuesday; December 19, 2006

HP Pavilion dv7-6b78us Sound Problem (sound routes to built-in speakers during voice chat)

I'm having an issue with my laptop. When I play using Steam with headphones plugged in, and I attempt to start a voice call, the sound routes to the built-in speakers and I cannot switch it back to just headphones.
I tired unplugging and replugging the headphones, that didn't work,and turning down the speaker sound made the game sound not go through the headphones. What could be wrong? Restarting fixes the issue, but it happens everytime I attempt to voice chat...

This used to happen to me when I 1st purchased my laptop. Heres a solution that worked for me.
RIght click on your audio icon next to the clock, then left click the "Playback Devices" option.
On this window, look for the tab named "Communications" at the top. Heres a screenshot: http://puu.sh/4OtOO.png
When on this tab, click on "Do Nothing" this will prevent windows from switching your headphone to the speakers everytime you get a new notification.
Cheers.

Voice chat problem on gmail,skype and oovoo yahoo messanger works at time

Voice chat problem on gmail,skype and oovoo yahoo messanger works at times.
Pavilion dv6, i7, windows 7
at times it tells that your microphone is really quet.
Thanks,
Ranjith

Sounds like the network's firewall or other security feature is blocking the ports used for sending the emails.
What type of neworks do not work? A businees network?

Big Problem regarding voice chat

Hi there,
i got my apple week before only ,,i need to voice chat with my friends but they all are using windows .Is there any possible way to do inter os voice chat .n one more question if i am using gtalk through ichat how can i do group chat
-abhishek

http://www.mebeam.com/
10:24 PM Saturday; December 15, 2007

Voice chat program

After a few days work, I have completed the mian voice chat program. I know there are so many people like me that wants that. I post these program. i will complete gui work later. and there is a problem in the program. if the speaking one do not speak for a while, the listening client will hear noise. Can some one help me.
package com.longshine.voice;
import java.io.*;
import java.net.*;
import java.util.*;
public class Server
// The ServerSocket we'll use for accepting new connections
private ServerSocket ss;
// A mapping from sockets to DataOutputStreams. This will
// help us avoid having to create a DataOutputStream each time
// we want to write to a stream.
private Hashtable outputStreams = new Hashtable();
final int bufSize = 16384;
//current speak_man
private int speakman=-1;
// Constructor and while-accept loop all in one.
public Server( int port ) throws IOException {
// All we have to do is listen
listen( port );
private void listen( int port ) throws IOException {
// Create the ServerSocket
ss = new ServerSocket( port );
// Tell the world we're ready to go
System.out.println( "Listening on "+ss );
// Keep accepting connections forever
while (true) {
// Grab the next incoming connection
Socket s = ss.accept();
// Tell the world we've got it
System.out.println( "Connection from "+s );
// Create a DataOutputStream for writing data to the
// other side
DataOutputStream dout = new DataOutputStream( s.getOutputStream() );
// Save this stream so we don't need to make it again
outputStreams.put( s, dout );
// Create a new thread for this connection, and then forget
// about it
new VoiceServer( this, s );
// Get an enumeration of all the OutputStreams, one for each client
// connected to us
Enumeration getOutputStreams() {
return outputStreams.elements();
// Send a message to all clients (utility routine)
void sendToAll( byte[] voice ,Socket socket) {
// We synchronize on this because another thread might be
// calling removeConnection() and this would screw us up
// as we tried to walk through the list
synchronized( outputStreams ) {
// For each client ...
for (Enumeration e = outputStreams.keys(); e.hasMoreElements(); ) {
// ... get the output stream ...
Socket tmp=(Socket)e.nextElement();
if(!tmp.equals(socket))
try {
DataOutputStream dout = new DataOutputStream(tmp.getOutputStream());
// ... and send the message
dout.write(voice,0,44096);
dout.flush();
} catch( IOException ie ) { System.out.println( ie ); }
// Remove a socket, and it's corresponding output stream, from our
// list. This is usually called by a connection thread that has
// discovered that the connectin to the client is dead.
void removeConnection( Socket s ) {
// Synchronize so we don't mess up sendToAll() while it walks
// down the list of all output streamsa
synchronized( outputStreams ) {
// Tell the world
System.out.println( "Removing connection to "+s );
// Remove it from our hashtable/list
outputStreams.remove( s );
// Make sure it's closed
try {
s.close();
} catch( IOException ie ) {
System.out.println( "Error closing "+s );
ie.printStackTrace();
// Main routine
// Usage: java Server <port>
static public void main( String args[] ) throws Exception {
// Get the port # from the command line
int port = Integer.parseInt( args[0] );
// Create a Server object, which will automatically begin
// accepting connections.
new Server( port );
package com.longshine.voice;
import java.net.*;
import java.io.*;
import java.sql.*;
import java.io.*;
import java.net.*;
public class VoiceServer extends Thread
// The Server that spawned us
private Server server;
final int bufSize = 16384;
// The Socket connected to our client
private Socket socket;
// Constructor.
public VoiceServer( Server server, Socket socket ) {
// Save the parameters
this.server = server;
this.socket = socket;
// Start up the thread
start();
// This runs in a separate thread when start() is called in the
// constructor.
public void run() {
try {
// Create a DataInputStream for communication; the client
// is using a DataOutputStream to write to us
DataInputStream din = new DataInputStream( socket.getInputStream() );
byte[] voice=new byte[44096];
// Over and over, forever ...
while (true) {
// ... read the next message ...
// int bytes = din.read(voice,0,44096);
int bytes = din.read(voice);
// ... and have the server send it to all clients
server.sendToAll(voice,socket);
} catch( EOFException ie ) {
// This doesn't need an error message
} catch( IOException ie ) {
// This does; tell the world!
ie.printStackTrace();
} finally {
// The connection is closed for one reason or another,
// so have the server dealing with it
server.removeConnection( socket );
package com.longshine.voice;
import java.io.*;
import java.net.*;
public class Client {
private String host="";
private String port="";
private Socket socket;
private DataOutputStream dout;
private DataInputStream din;
private Capture capture=null;
private Play play=null;
public Client(String host,String port) {
this.host=host;
this.port=port;
public void init()
try
socket = new Socket( host, Integer.parseInt(port));
din = new DataInputStream( socket.getInputStream() );
dout = new DataOutputStream( socket.getOutputStream());
capture=new Capture(dout);
play=new Play(din);
catch(Exception e)
e.printStackTrace();
public static void main(String[] args) {
Client client = new Client("172.18.220.176","5678");
client.init();
if(args[0].equalsIgnoreCase("say"))
client.capture.start();
if(args[0].equalsIgnoreCase("hear"))
client.play.start();
package com.longshine.voice;
import java.io.*;
import java.util.Vector;
import java.util.Enumeration;
import javax.sound.sampled.*;
import java.text.*;
import java.net.*;
public class Play implements Runnable {
SourceDataLine line;
Thread thread;
String errStr=null;
DataInputStream in=null;
AudioInputStream audioInputStream;
final int bufSize = 16384;
int duration=0;
public Play(DataInputStream in)
this.in=in;
public void start() {
errStr = null;
thread = new Thread(this);
thread.setName("Playback");
thread.start();
public void stop() {
thread = null;
private void shutDown(String message) {
if ((errStr = message) != null) {
System.err.println(errStr);
if (thread != null) {
thread = null;
public void createAudioInputStream() {
if (in != null ) {
try {
errStr = null;
java.io.BufferedInputStream oin = new java.io.BufferedInputStream(in);
audioInputStream = AudioSystem.getAudioInputStream(oin);
} catch (Exception ex) {
ex.printStackTrace();
} else {
public void run() {
// reload the file if loaded by file
if (in != null) {
// createAudioInputStream();
// make sure we have something to play
// if (audioInputStream == null) {
// shutDown("No loaded audio to play back");
// return;
// reset to the beginnning of the stream
// try {
// audioInputStream.reset();
// } catch (Exception e) {
// shutDown("Unable to reset the stream\n" + e);
// return;
// get an AudioInputStream of the desired format for playback
AudioFormat format = getFormat();
audioInputStream=new AudioInputStream(in, format, AudioSystem.NOT_SPECIFIED);
AudioInputStream playbackInputStream = AudioSystem.getAudioInputStream(format, audioInputStream);
if (playbackInputStream == null) {
shutDown("Unable to convert stream of format " + audioInputStream + " to format " + format);
return;
// define the required attributes for our line,
// and make sure a compatible line is supported.
DataLine.Info info = new DataLine.Info(SourceDataLine.class,
format);
if (!AudioSystem.isLineSupported(info)) {
shutDown("Line matching " + info + " not supported.");
return;
// get and open the source data line for playback.
try {
line = (SourceDataLine) AudioSystem.getLine(info);
line.open(format, bufSize);
} catch (LineUnavailableException ex) {
shutDown("Unable to open the line: " + ex);
return;
// play back the captured audio data
int frameSizeInBytes = format.getFrameSize();
int bufferLengthInFrames = line.getBufferSize() / 8;
int bufferLengthInBytes = bufferLengthInFrames * frameSizeInBytes;
byte[] data = new byte[bufferLengthInBytes];
int numBytesRead = 0;
// start the source data line
line.start();
while (thread != null) {
try {
if ((numBytesRead = playbackInputStream.read(data)) == -1) {
break;
int numBytesRemaining = numBytesRead;
while (numBytesRemaining > 0 ) {
numBytesRemaining -= line.write(data, 0, numBytesRemaining);
} catch (Exception e) {
shutDown("Error during playback: " + e);
break;
// we reached the end of the stream. let the data play out, then
// stop and close the line.
if (thread != null) {
line.drain();
line.stop();
line.close();
line = null;
shutDown(null);
public AudioFormat getFormat() {
AudioFormat.Encoding encoding = AudioFormat.Encoding.ULAW;
String encString = "linear";
float rate = Float.valueOf("44100").floatValue();
int sampleSize = 16;
String signedString = "signed";
boolean bigEndian = true;
int channels = 2;
if (encString.equals("linear")) {
if (signedString.equals("signed")) {
encoding = AudioFormat.Encoding.PCM_SIGNED;
} else {
encoding = AudioFormat.Encoding.PCM_UNSIGNED;
} else if (encString.equals("alaw")) {
encoding = AudioFormat.Encoding.ALAW;
return new AudioFormat(encoding, rate, sampleSize,
channels, (sampleSize/8)*channels, rate, bigEndian);
} // End class Playback
package com.longshine.voice;
import java.io.*;
import java.util.Vector;
import java.util.Enumeration;
import javax.sound.sampled.*;
import java.text.*;
import java.net.*;
public class Capture implements Runnable {
TargetDataLine line;
Thread thread;
String errStr=null;
DataOutputStream out=null;
AudioInputStream audioInputStream;
final int bufSize = 16384;
int duration=0;
public Capture(DataOutputStream out)
this.out=out;
public void start() {
errStr = null;
thread = new Thread(this);
thread.setName("Playback");
thread.start();
public void stop() {
thread = null;
private void shutDown(String message) {
if ((errStr = message) != null) {
System.out.println(errStr);
if (thread != null) {
thread = null;
public AudioFormat getFormat() {
AudioFormat.Encoding encoding = AudioFormat.Encoding.ULAW;
String encString = "linear";
float rate = Float.valueOf("44100").floatValue();
int sampleSize = 16;
String signedString = "signed";
boolean bigEndian = true;
int channels = 2;
if (encString.equals("linear")) {
if (signedString.equals("signed")) {
encoding = AudioFormat.Encoding.PCM_SIGNED;
} else {
encoding = AudioFormat.Encoding.PCM_UNSIGNED;
} else if (encString.equals("alaw")) {
encoding = AudioFormat.Encoding.ALAW;
return new AudioFormat(encoding, rate, sampleSize,
channels, (sampleSize/8)*channels, rate, bigEndian);
public void run() {
duration = 0;
audioInputStream = null;
// define the required attributes for our line,
// and make sure a compatible line is supported.
AudioFormat format = getFormat();
DataLine.Info info = new DataLine.Info(TargetDataLine.class,
format);
if (!AudioSystem.isLineSupported(info)) {
shutDown("Line matching " + info + " not supported.");
return;
// get and open the target data line for capture.
try {
line = (TargetDataLine) AudioSystem.getLine(info);
line.open(format, line.getBufferSize());
} catch (LineUnavailableException ex) {
shutDown("Unable to open the line: " + ex);
return;
} catch (SecurityException ex) {
shutDown(ex.toString());
return;
} catch (Exception ex) {
shutDown(ex.toString());
return;
// play back the captured audio data
int frameSizeInBytes = format.getFrameSize();
int bufferLengthInFrames = line.getBufferSize() / 8;
int bufferLengthInBytes = bufferLengthInFrames * frameSizeInBytes;
byte[] data = new byte[bufferLengthInBytes];
int numBytesRead;
line.start();
try
while (thread != null) {
if((numBytesRead = line.read(data, 0, bufferLengthInBytes)) == -1) {
break;
if(data.length>0)
out.write(data, 0, numBytesRead);
out.flush();
catch (Exception e)
e.printStackTrace();
// we reached the end of the stream. stop and close the line.
line.stop();
line.close();
line = null;
// stop and close the output stream
try {
out.flush();
out.close();
} catch (IOException ex) {
ex.printStackTrace();
} // End class Capture

After a few days work, I have completed the mian voice chat program. I know there are so many people like me that wants that. I post these program. i will complete gui work later. and there is a problem in the program. if the speaking one do not speak for a while, the listening client will hear noise. Can some one help me.
package com.longshine.voice;
import java.io.*;
import java.net.*;
import java.util.*;
public class Server
// The ServerSocket we'll use for accepting new connections
private ServerSocket ss;
// A mapping from sockets to DataOutputStreams. This will
// help us avoid having to create a DataOutputStream each time
// we want to write to a stream.
private Hashtable outputStreams = new Hashtable();
final int bufSize = 16384;
//current speak_man
private int speakman=-1;
// Constructor and while-accept loop all in one.
public Server( int port ) throws IOException {
// All we have to do is listen
listen( port );
private void listen( int port ) throws IOException {
// Create the ServerSocket
ss = new ServerSocket( port );
// Tell the world we're ready to go
System.out.println( "Listening on "+ss );
// Keep accepting connections forever
while (true) {
// Grab the next incoming connection
Socket s = ss.accept();
// Tell the world we've got it
System.out.println( "Connection from "+s );
// Create a DataOutputStream for writing data to the
// other side
DataOutputStream dout = new DataOutputStream( s.getOutputStream() );
// Save this stream so we don't need to make it again
outputStreams.put( s, dout );
// Create a new thread for this connection, and then forget
// about it
new VoiceServer( this, s );
// Get an enumeration of all the OutputStreams, one for each client
// connected to us
Enumeration getOutputStreams() {
return outputStreams.elements();
// Send a message to all clients (utility routine)
void sendToAll( byte[] voice ,Socket socket) {
// We synchronize on this because another thread might be
// calling removeConnection() and this would screw us up
// as we tried to walk through the list
synchronized( outputStreams ) {
// For each client ...
for (Enumeration e = outputStreams.keys(); e.hasMoreElements(); ) {
// ... get the output stream ...
Socket tmp=(Socket)e.nextElement();
if(!tmp.equals(socket))
try {
DataOutputStream dout = new DataOutputStream(tmp.getOutputStream());
// ... and send the message
dout.write(voice,0,44096);
dout.flush();
} catch( IOException ie ) { System.out.println( ie ); }
// Remove a socket, and it's corresponding output stream, from our
// list. This is usually called by a connection thread that has
// discovered that the connectin to the client is dead.
void removeConnection( Socket s ) {
// Synchronize so we don't mess up sendToAll() while it walks
// down the list of all output streamsa
synchronized( outputStreams ) {
// Tell the world
System.out.println( "Removing connection to "+s );
// Remove it from our hashtable/list
outputStreams.remove( s );
// Make sure it's closed
try {
s.close();
} catch( IOException ie ) {
System.out.println( "Error closing "+s );
ie.printStackTrace();
// Main routine
// Usage: java Server <port>
static public void main( String args[] ) throws Exception {
// Get the port # from the command line
int port = Integer.parseInt( args[0] );
// Create a Server object, which will automatically begin
// accepting connections.
new Server( port );
package com.longshine.voice;
import java.net.*;
import java.io.*;
import java.sql.*;
import java.io.*;
import java.net.*;
public class VoiceServer extends Thread
// The Server that spawned us
private Server server;
final int bufSize = 16384;
// The Socket connected to our client
private Socket socket;
// Constructor.
public VoiceServer( Server server, Socket socket ) {
// Save the parameters
this.server = server;
this.socket = socket;
// Start up the thread
start();
// This runs in a separate thread when start() is called in the
// constructor.
public void run() {
try {
// Create a DataInputStream for communication; the client
// is using a DataOutputStream to write to us
DataInputStream din = new DataInputStream( socket.getInputStream() );
byte[] voice=new byte[44096];
// Over and over, forever ...
while (true) {
// ... read the next message ...
// int bytes = din.read(voice,0,44096);
int bytes = din.read(voice);
// ... and have the server send it to all clients
server.sendToAll(voice,socket);
} catch( EOFException ie ) {
// This doesn't need an error message
} catch( IOException ie ) {
// This does; tell the world!
ie.printStackTrace();
} finally {
// The connection is closed for one reason or another,
// so have the server dealing with it
server.removeConnection( socket );
package com.longshine.voice;
import java.io.*;
import java.net.*;
public class Client {
private String host="";
private String port="";
private Socket socket;
private DataOutputStream dout;
private DataInputStream din;
private Capture capture=null;
private Play play=null;
public Client(String host,String port) {
this.host=host;
this.port=port;
public void init()
try
socket = new Socket( host, Integer.parseInt(port));
din = new DataInputStream( socket.getInputStream() );
dout = new DataOutputStream( socket.getOutputStream());
capture=new Capture(dout);
play=new Play(din);
catch(Exception e)
e.printStackTrace();
public static void main(String[] args) {
Client client = new Client("172.18.220.176","5678");
client.init();
if(args[0].equalsIgnoreCase("say"))
client.capture.start();
if(args[0].equalsIgnoreCase("hear"))
client.play.start();
package com.longshine.voice;
import java.io.*;
import java.util.Vector;
import java.util.Enumeration;
import javax.sound.sampled.*;
import java.text.*;
import java.net.*;
public class Play implements Runnable {
SourceDataLine line;
Thread thread;
String errStr=null;
DataInputStream in=null;
AudioInputStream audioInputStream;
final int bufSize = 16384;
int duration=0;
public Play(DataInputStream in)
this.in=in;
public void start() {
errStr = null;
thread = new Thread(this);
thread.setName("Playback");
thread.start();
public void stop() {
thread = null;
private void shutDown(String message) {
if ((errStr = message) != null) {
System.err.println(errStr);
if (thread != null) {
thread = null;
public void createAudioInputStream() {
if (in != null ) {
try {
errStr = null;
java.io.BufferedInputStream oin = new java.io.BufferedInputStream(in);
audioInputStream = AudioSystem.getAudioInputStream(oin);
} catch (Exception ex) {
ex.printStackTrace();
} else {
public void run() {
// reload the file if loaded by file
if (in != null) {
// createAudioInputStream();
// make sure we have something to play
// if (audioInputStream == null) {
// shutDown("No loaded audio to play back");
// return;
// reset to the beginnning of the stream
// try {
// audioInputStream.reset();
// } catch (Exception e) {
// shutDown("Unable to reset the stream\n" + e);
// return;
// get an AudioInputStream of the desired format for playback
AudioFormat format = getFormat();
audioInputStream=new AudioInputStream(in, format, AudioSystem.NOT_SPECIFIED);
AudioInputStream playbackInputStream = AudioSystem.getAudioInputStream(format, audioInputStream);
if (playbackInputStream == null) {
shutDown("Unable to convert stream of format " + audioInputStream + " to format " + format);
return;
// define the required attributes for our line,
// and make sure a compatible line is supported.
DataLine.Info info = new DataLine.Info(SourceDataLine.class,
format);
if (!AudioSystem.isLineSupported(info)) {
shutDown("Line matching " + info + " not supported.");
return;
// get and open the source data line for playback.
try {
line = (SourceDataLine) AudioSystem.getLine(info);
line.open(format, bufSize);
} catch (LineUnavailableException ex) {
shutDown("Unable to open the line: " + ex);
return;
// play back the captured audio data
int frameSizeInBytes = format.getFrameSize();
int bufferLengthInFrames = line.getBufferSize() / 8;
int bufferLengthInBytes = bufferLengthInFrames * frameSizeInBytes;
byte[] data = new byte[bufferLengthInBytes];
int numBytesRead = 0;
// start the source data line
line.start();
while (thread != null) {
try {
if ((numBytesRead = playbackInputStream.read(data)) == -1) {
break;
int numBytesRemaining = numBytesRead;
while (numBytesRemaining > 0 ) {
numBytesRemaining -= line.write(data, 0, numBytesRemaining);
} catch (Exception e) {
shutDown("Error during playback: " + e);
break;
// we reached the end of the stream. let the data play out, then
// stop and close the line.
if (thread != null) {
line.drain();
line.stop();
line.close();
line = null;
shutDown(null);
public AudioFormat getFormat() {
AudioFormat.Encoding encoding = AudioFormat.Encoding.ULAW;
String encString = "linear";
float rate = Float.valueOf("44100").floatValue();
int sampleSize = 16;
String signedString = "signed";
boolean bigEndian = true;
int channels = 2;
if (encString.equals("linear")) {
if (signedString.equals("signed")) {
encoding = AudioFormat.Encoding.PCM_SIGNED;
} else {
encoding = AudioFormat.Encoding.PCM_UNSIGNED;
} else if (encString.equals("alaw")) {
encoding = AudioFormat.Encoding.ALAW;
return new AudioFormat(encoding, rate, sampleSize,
channels, (sampleSize/8)*channels, rate, bigEndian);
} // End class Playback
package com.longshine.voice;
import java.io.*;
import java.util.Vector;
import java.util.Enumeration;
import javax.sound.sampled.*;
import java.text.*;
import java.net.*;
public class Capture implements Runnable {
TargetDataLine line;
Thread thread;
String errStr=null;
DataOutputStream out=null;
AudioInputStream audioInputStream;
final int bufSize = 16384;
int duration=0;
public Capture(DataOutputStream out)
this.out=out;
public void start() {
errStr = null;
thread = new Thread(this);
thread.setName("Playback");
thread.start();
public void stop() {
thread = null;
private void shutDown(String message) {
if ((errStr = message) != null) {
System.out.println(errStr);
if (thread != null) {
thread = null;
public AudioFormat getFormat() {
AudioFormat.Encoding encoding = AudioFormat.Encoding.ULAW;
String encString = "linear";
float rate = Float.valueOf("44100").floatValue();
int sampleSize = 16;
String signedString = "signed";
boolean bigEndian = true;
int channels = 2;
if (encString.equals("linear")) {
if (signedString.equals("signed")) {
encoding = AudioFormat.Encoding.PCM_SIGNED;
} else {
encoding = AudioFormat.Encoding.PCM_UNSIGNED;
} else if (encString.equals("alaw")) {
encoding = AudioFormat.Encoding.ALAW;
return new AudioFormat(encoding, rate, sampleSize,
channels, (sampleSize/8)*channels, rate, bigEndian);
public void run() {
duration = 0;
audioInputStream = null;
// define the required attributes for our line,
// and make sure a compatible line is supported.
AudioFormat format = getFormat();
DataLine.Info info = new DataLine.Info(TargetDataLine.class,
format);
if (!AudioSystem.isLineSupported(info)) {
shutDown("Line matching " + info + " not supported.");
return;
// get and open the target data line for capture.
try {
line = (TargetDataLine) AudioSystem.getLine(info);
line.open(format, line.getBufferSize());
} catch (LineUnavailableException ex) {
shutDown("Unable to open the line: " + ex);
return;
} catch (SecurityException ex) {
shutDown(ex.toString());
return;
} catch (Exception ex) {
shutDown(ex.toString());
return;
// play back the captured audio data
int frameSizeInBytes = format.getFrameSize();
int bufferLengthInFrames = line.getBufferSize() / 8;
int bufferLengthInBytes = bufferLengthInFrames * frameSizeInBytes;
byte[] data = new byte[bufferLengthInBytes];
int numBytesRead;
line.start();
try
while (thread != null) {
if((numBytesRead = line.read(data, 0, bufferLengthInBytes)) == -1) {
break;
if(data.length>0)
out.write(data, 0, numBytesRead);
out.flush();
catch (Exception e)
e.printStackTrace();
// we reached the end of the stream. stop and close the line.
line.stop();
line.close();
line = null;
// stop and close the output stream
try {
out.flush();
out.close();
} catch (IOException ex) {
ex.printStackTrace();
} // End class Capture

Help with Audio Formats please

Hello everybody,
I have a problem with the Java AudioFormat class, can you help me please?
The thing is Im working on a voice chat using the following audio format settings:
AudioFormat(AudioFormat.Encoding.PCM_SIGNED, sampleRate, sampleSize, 1, 1, frameRate, false);
Where:
audioReadBytes = 1024;
sampleRate = 8000.0F;
frameRate = 8000.0F;
sampleSize = 8;
My problem is that these settings can cause incrementing voice delay and sometimes even block the application. It works fine on a LAN but on the internet it never works.
I wanted to ask you if there�s a better audioformat setting that can decrease the size and quality of the sound, so it works on low bandwidths.
I�m new to audio formats so I don�t understand them much and when I tried to change the settings by decreasing the sample rate I didn�t get what I expected.
Please help me...
Thanks a lot,
Dan.

Based on the concept of Unity in a gain chain, if you set the levels properly at the output of the analog mixer, then they should be fine coming into the software after the A/D conversion. As long as you don't clip the digital input, you can adjust levels internally on an audio timeline, so it is always better to err on the side of too little rather than too much.
Digital maximum is -20 dB which is equivalent to 0 dB VU in the analog world. This provides sufficient headroom to avoid clipping in most circumstance.
Try a few different levels and see what works best for your needs.
HTH,

Voice chat not working.

Hello,
I was just trying the code given in JMF documentation for voice chat. When i ran the below given code, it doesn't throw any error but after running this program when i speak anything into my microphone i am unable to hear anything. What can be the problem?
package sendmicrophonedata;
import java.io.IOException;
import java.util.Vector;
import javax.media.CaptureDeviceInfo;
import javax.media.CaptureDeviceManager;
import javax.media.DataSink;
import javax.media.Manager;
import javax.media.MediaLocator;
import javax.media.NoProcessorException;
import javax.media.NotRealizedError;
import javax.media.Processor;
import javax.media.control.FormatControl;
import javax.media.control.TrackControl;
import javax.media.format.AudioFormat;
import javax.media.protocol.ContentDescriptor;
import javax.media.protocol.DataSource;
public class Main {
     * @param args the command line arguments
    public static void main(String[] args) {
       // First find a capture device that will capture linear audio
        // data at 8bit 8Khz
        AudioFormat format= new AudioFormat(AudioFormat.LINEAR,
                                            8000,
                                            8,
                                            1);
        Vector devices= CaptureDeviceManager.getDeviceList( format);
        CaptureDeviceInfo di= null;
        if (devices.size() > 0) {
             di = (CaptureDeviceInfo) devices.elementAt( 0);
        else {
            // exit if we could not find the relevant capturedevice.
            System.exit(-1);
        // Create a processor for this capturedevice & exit if we
        // cannot create it
        Processor processor = null;
        try {
             processor = Manager.createProcessor(di.getLocator());
        } catch (IOException e) {
            System.exit(-1);
        } catch (NoProcessorException e) {
            System.exit(-1);
       // configure the processor
       processor.configure();
       // block until it has been configured
       processor.setContentDescriptor(
           new ContentDescriptor( ContentDescriptor.RAW));
       TrackControl track[] = processor.getTrackControls();
       boolean encodingOk = false;
       // Go through the tracks and try to program one of them to
       // output gsm data.
        for (int i = 0; i < track.length; i++) {
            if (!encodingOk && track[i] instanceof FormatControl) {
            if (((FormatControl)track).
setFormat( new AudioFormat(AudioFormat.GSM_RTP,
8000,
8,
1)) == null) {
track[i].setEnabled(false);
else {
encodingOk = true;
} else {
// we could not set this track to gsm, so disable it
track[i].setEnabled(false);
// At this point, we have determined where we can send out
// gsm data or not.
// realize the processor
if (encodingOk) {
processor.realize();
// block until realized.
// get the output datasource of the processor and exit
// if we fail
DataSource ds = null;
try {
ds = processor.getDataOutput();
} catch (NotRealizedError e) {
System.exit(-1);
// hand this datasource to manager for creating an RTP
// datasink our RTP datasimnk will multicast the audio
try {
String url= "rtp://192.168.1.255:8888/audio";
MediaLocator m = new MediaLocator(url);
DataSink d = Manager.createDataSink(ds, m);
d.open();
d.start();
} catch (Exception e) {
System.exit(-1);

LaalaPanchal wrote:
Hello,
I was just trying the code given in JMF documentation for voice chat. When i ran the below given code, it doesn't throw any error but after running this program when i speak anything into my microphone i am unable to hear anything. What can be the problem?Why exactly are you expecting to hear anything? You don't have anything in your code to render sound, so why're you expecting it to?

Can't seem to enable voice chat anymore

hello folks
i just upgraded to an audigy but now when my friend and i try to initiate voice chat through x-fire and msn we can't hear each other at all, where we had no problems before...
i've got a p4 3.6ghz with gb of ram and i've disabled my onboard sound card in the bios.
i've also tested my mic and speakers through the audio tab in control panel in xp.
any ideas?

actionthom,
In the Creative Mixer, in the REC panel, make sure you have Mircrophone selected. Move the slider to your volume preference. Click on the red "+" at the top and select 20dB boost. If you want your own speakers to play what you say into the mic, then in the Source panel, un-mute Microphone. Adjust that slider to your preference. It's usually a good idea to mute any other sources you don't want.
Also, in Control Panel, Sounds and MultiMedia (or something similar for your system), Audio tab, make sure your Audigy is selected as the preferred device for Playback, Recording, etc. If you have a "Use only preferred devices" box, check it.Message Edited by Katman on 0-30-2006 07:4 PM

Problem in audio formate voice chatting applet

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