I use speex lib in my android app to complete that two phones can talk to each other. This is my client code. It works well when I delete this line: short[] result = SpeexEchoCanceller.getInstance().process(recordBuff,toShortArray(receiveBuff)); When add this line, another phone only hear a lot of noise and can not hear my voice.
private static final int buffSize = 1000; private byte[] receiveBuff = new byte[buffSize];
private short[] recordBuff = new short[buffSize];
private void startTalk(){
new Thread(new Runnable() {
@Override
public void run() {
try {
// start AudioRecord and init speex
SpeexEchoCanceller.getInstance().open(8000,160,100);
//.....some code......
isRecording = true;
while(isRecording){
int len = 0;
if(((len = mServerInputStream.read(receiveBuff)) != -1) && mAudioTrack != null){
mAudioTrack.write(receiveBuff,0,len);
mAudioTrack.flush();
}
mAudioRecord.read(recordBuff, 0, buffSize);
//process echo
short[] result = SpeexEchoCanceller.getInstance().process(recordBuff,toShortArray(receiveBuff));
byte[] resultByte = toByteArray(result);
mServerOutStream.write(resultByte,0,buffSize);
mServerOutStream.flush();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}).start();
}
I find an old topic here:Android Speex echo cancellation problems It references buffer frame and implement own buffering. But I really don't know how to implement my own buffering to make my code work well.
