comment puis-je jouer à pcm fichier

J'ai aussi utilisé votre code, mais mon enregistrement voix était comme un "zzzzz" enregistrement. J'ai donc modifié un peu le code et maintenant je peux écouter sans problèmes et distorsions de l'enregistrer à la fois par le smartphone et PC (dans ce cas avec Audacity).
C'est mon code:

public class VoiceActivity extends Activity {
private static final String TAG = "VoiceRecord";
private static final int RECORDER_SAMPLERATE = 8000;     
private static final int RECORDER_CHANNELS_IN = AudioFormat.CHANNEL_IN_MONO;
private static final int RECORDER_CHANNELS_OUT = AudioFormat.CHANNEL_OUT_MONO;
private static final int RECORDER_AUDIO_ENCODING = AudioFormat.ENCODING_PCM_16BIT;
private static final int AUDIO_SOURCE = MediaRecorder.AudioSource.MIC;
//Initialize minimum buffer size in bytes.
private int bufferSize = AudioRecord.getMinBufferSize(RECORDER_SAMPLERATE, RECORDER_CHANNELS_IN, RECORDER_AUDIO_ENCODING);
private AudioRecord recorder = null;
private Thread recordingThread = null;
private boolean isRecording = false;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_voice);
((Button) findViewById(R.id.start_button)).setOnClickListener(btnClick);
((Button) findViewById(R.id.stop_button)).setOnClickListener(btnClick);
enableButtons(false);   
}
private void enableButton(int id, boolean isEnable) {
((Button) findViewById(id)).setEnabled(isEnable);
}
private void enableButtons(boolean isRecording) {
enableButton(R.id.start_button, !isRecording);
enableButton(R.id.stop_button, isRecording);
}
private void startRecording() {
if( bufferSize == AudioRecord.ERROR_BAD_VALUE)
Log.e( TAG, "Bad Value for \"bufferSize\", recording parameters are not supported by the hardware");
if( bufferSize == AudioRecord.ERROR )
Log.e( TAG, "Bad Value for \"bufferSize\", implementation was unable to query the hardware for its output properties");
Log.e( TAG, "\"bufferSize\"="+bufferSize);
//Initialize Audio Recorder.    
recorder = new AudioRecord(AUDIO_SOURCE, RECORDER_SAMPLERATE, RECORDER_CHANNELS_IN, RECORDER_AUDIO_ENCODING, bufferSize);
//Starts recording from the AudioRecord instance.
recorder.startRecording();
isRecording = true;
recordingThread = new Thread(new Runnable() {
public void run() {
writeAudioDataToFile();
}
}, "AudioRecorder Thread");
recordingThread.start();
}
private void writeAudioDataToFile() {
//Write the output audio in byte
String filePath = "/sdcard/8k16bitMono.pcm";
byte saudioBuffer[] = new byte[bufferSize];
FileOutputStream os = null;
try {
os = new FileOutputStream(filePath);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
while (isRecording) {
//gets the voice output from microphone to byte format
recorder.read(saudioBuffer, 0, bufferSize);
try {
// writes the data to file from buffer stores the voice buffer
os.write(saudioBuffer, 0, bufferSize);
} catch (IOException e) {
e.printStackTrace();
}
}
try {
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
private void stopRecording() throws IOException {
// stops the recording activity
if (null != recorder) {
isRecording = false;  
recorder.stop();
recorder.release();
recorder = null;
recordingThread = null;
PlayShortAudioFileViaAudioTrack("/sdcard/8k16bitMono.pcm");
}   
}
private void PlayShortAudioFileViaAudioTrack(String filePath) throws IOException{
//We keep temporarily filePath globally as we have only two sample sounds now..
if (filePath==null)
return;
//Reading the file.. 
File file = new File(filePath); //for ex. path= "/sdcard/samplesound.pcm" or "/sdcard/samplesound.wav"
byte[] byteData = new byte[(int) file.length()];
Log.d(TAG, (int) file.length()+"");
FileInputStream in = null;
try {
in = new FileInputStream( file );
in.read( byteData );
in.close(); 
} catch (FileNotFoundException e) {
//TODO Auto-generated catch block
e.printStackTrace();
}
//Set and push to audio track..
int intSize = android.media.AudioTrack.getMinBufferSize(RECORDER_SAMPLERATE, RECORDER_CHANNELS_OUT, RECORDER_AUDIO_ENCODING); 
Log.d(TAG, intSize+"");
AudioTrack at = new AudioTrack(AudioManager.STREAM_MUSIC, RECORDER_SAMPLERATE, RECORDER_CHANNELS_OUT, RECORDER_AUDIO_ENCODING, intSize, AudioTrack.MODE_STREAM); 
if (at!=null) { 
at.play();
//Write the byte array to the track
at.write(byteData, 0, byteData.length); 
at.stop();
at.release();
}
else
Log.d(TAG, "audio track is not initialised ");
}
private View.OnClickListener btnClick = new View.OnClickListener() {
public void onClick(View v) {
switch (v.getId()) {
case R.id.start_button: {
enableButtons(true);
startRecording();
break;
}
case R.id.stop_button: {
enableButtons(false);
try {
stopRecording();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
break;
}
}
}   
};
//onClick of backbutton finishes the activity.
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
finish();
}
return super.onKeyDown(keyCode, event);
}
}

OriginalL'auteur Grancein

private void startRecording() {
si( bufferSize == AudioRecord.ERROR_BAD_VALUE)
Journal.e( TAG, "Mauvaise Valeur pour \"bufferSize\", les paramètres d'enregistrement ne sont pas pris en charge par le matériel");

if( bufferSize == AudioRecord.ERROR )
Log.e( TAG, "Bad Value for \"bufferSize\", implementation was unable to query the hardware for its output properties");
Log.e( TAG, "\"bufferSize\"="+bufferSize);
//Initialize Audio Recorder.    
recorder = new AudioRecord(AUDIO_SOURCE, RECORDER_SAMPLERATE, AudioFormat.CHANNEL_CONFIGURATION_MONO, RECORDER_AUDIO_ENCODING, bufferSize);
//Starts recording from the AudioRecord instance.
recorder.startRecording();
isRecording = true;
recordingThread = new Thread(new Runnable() {
public void run() {
writeAudioDataToFile();
}
}, "AudioRecorder Thread");
recordingThread.start();

}

Remplacer L'Enregistrement De Code...

OriginalL'auteur Ravi makhija