方案1:两个用户/客户端之间的语音聊天运行良好，如果且仅当两者都使用耳机时。
方案2:如果其中任何一个都不使用耳机，则语音聊天有效，但噪音逐渐增加。
工作原理
客户端1的麦克风声音已录制并发送给客户端2。但是客户端1的扬声器声音也已录制并发送给客户端2。因此，客户端2反复听到自己的声音，而客户端1则重复发声。并且噪声越来越大。
目的
我需要停止录制扬声器的声音。如何通过过滤扬声器的声音来仅读取/记录麦克风的输入声音？请帮忙。
这是我的代码:
public class Server {
ServerSocket MyService;
Socket clientSocket = null;
InputStream input;
TargetDataLine targetDataLine;
OutputStream out;
AudioFormat audioFormat;
SourceDataLine sourceDataLine;
byte tempBuffer[] = new byte[10000];
static Mixer.Info[] mixerInfo = AudioSystem.getMixerInfo();
Server() throws LineUnavailableException {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.show();
try {
Mixer mixer_ = AudioSystem.getMixer(mixerInfo[0]);
audioFormat = getAudioFormat();
DataLine.Info dataLineInfo = new DataLine.Info(SourceDataLine.class, audioFormat);
sourceDataLine = (SourceDataLine) AudioSystem.getLine(dataLineInfo);
sourceDataLine.open(audioFormat);
sourceDataLine.start();
MyService = new ServerSocket(500);
clientSocket = MyService.accept();
captureAudio();
input = new BufferedInputStream(clientSocket.getInputStream());
out = new BufferedOutputStream(clientSocket.getOutputStream());
while (input.read(tempBuffer) != -1) {
sourceDataLine.write(tempBuffer, 0, 10000);
}
} catch (IOException e) {
e.printStackTrace();
}
}
private AudioFormat getAudioFormat() {
float sampleRate = 8000.0F;
int sampleSizeInBits = 8;
int channels = 1;
boolean signed = true;
boolean bigEndian = false;
return new AudioFormat(
sampleRate,
sampleSizeInBits,
channels,
signed,
bigEndian);
}
public static void main(String s[]) throws LineUnavailableException {
Server s2 = new Server();
}
private void captureAudio() {
try {
audioFormat = getAudioFormat();
DataLine.Info dataLineInfo = new DataLine.Info(
TargetDataLine.class, audioFormat);
Mixer mixer = null;
System.out.println("Available mixers:");
for (int cnt = 0; cnt < mixerInfo.length; cnt++) {
mixer = AudioSystem.getMixer(mixerInfo[3]);
if (mixer.isLineSupported(dataLineInfo)) {
System.out.println(mixerInfo[cnt].getName());
targetDataLine = (TargetDataLine) mixer.getLine(dataLineInfo);
}
}
targetDataLine.open(audioFormat);
targetDataLine.start();
Thread captureThread = new CaptureThread();
captureThread.start();
} catch (Exception e) {
System.out.println(e);
System.exit(0);
}
}
class CaptureThread extends Thread {
byte tempBuffer[] = new byte[10000];
@Override
public void run() {
try {
while (true) {
int cnt = targetDataLine.read(tempBuffer, 0, tempBuffer.length);
out.write(tempBuffer);
out.flush();
}
} catch (Exception e) {
System.out.println(e);
System.exit(0);
}
}
}}
和
public class Client {
boolean stopCapture = false;
ByteArrayOutputStream byteArrayOutputStream;
AudioFormat audioFormat;
TargetDataLine targetDataLine;
AudioInputStream audioInputStream;
BufferedOutputStream out = null;
BufferedInputStream in = null;
Socket sock = null;
SourceDataLine sourceDataLine;
public static void main(String[] args) {
Client tx = new Client();
tx.captureAudio();
}
private void captureAudio() {
try {
sock = new Socket("192.168.1.3", 500);
out = new BufferedOutputStream(sock.getOutputStream());
in = new BufferedInputStream(sock.getInputStream());
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 dataLineInfo = new DataLine.Info(
TargetDataLine.class, audioFormat);
Mixer mixer = AudioSystem.getMixer(mixerInfo[2]);
targetDataLine = (TargetDataLine) mixer.getLine(dataLineInfo);
targetDataLine.open(audioFormat);
targetDataLine.start();
Thread captureThread = new CaptureThread();
captureThread.start();
DataLine.Info dataLineInfo1 = new DataLine.Info(
SourceDataLine.class, audioFormat);
sourceDataLine = (SourceDataLine) AudioSystem
.getLine(dataLineInfo1);
sourceDataLine.open(audioFormat);
sourceDataLine.start();
Thread playThread = new PlayThread();
playThread.start();
} catch (Exception e) {
System.out.println(e);
System.exit(0);
}
}
class CaptureThread extends Thread {
byte tempBuffer[] = new byte[10000];
@Override
public void run() {
byteArrayOutputStream = new ByteArrayOutputStream();
stopCapture = false;
try {
while (!stopCapture) {
int cnt = targetDataLine.read(tempBuffer, 0,
tempBuffer.length);
out.write(tempBuffer);
if (cnt > 0) {
byteArrayOutputStream.write(tempBuffer, 0, cnt);
}
}
byteArrayOutputStream.close();
} catch (Exception e) {
System.out.println(e);
System.exit(0);
}
}
}
private AudioFormat getAudioFormat() {
float sampleRate = 8000.0F;
int sampleSizeInBits = 8;
int channels = 1;
boolean signed = true;
boolean bigEndian = false;
return new AudioFormat(sampleRate, sampleSizeInBits, channels, signed,
bigEndian);
}
class PlayThread extends Thread {
byte tempBuffer[] = new byte[10000];
@Override
public void run() {
try {
while (in.read(tempBuffer) != -1) {
sourceDataLine.write(tempBuffer, 0, 10000);
}
sourceDataLine.drain();
sourceDataLine.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
最佳答案
处理免提音频时，典型的“回声消除”问题。
尝试搜索一个可以解决这个问题的库，因为如果您想从头开始做，那可不是一件容易的事，它不是matlab，自适应过滤器等。
塞巴斯