小编use*_*896的帖子

public class AudioRecorderActivity extends Activity {

  private static final int RECORDER_SAMPLERATE        = 8000;
  private static final int RECORDER_CHANNELS          = AudioFormat.CHANNEL_IN_MONO;
  private static final int RECORDER_AUDIO_ENCODING    = AudioFormat.ENCODING_PCM_16BIT;
  private AudioRecord recorder                        = null;
  private static final String TAG                     = "AudioRecorderActivity";
  short[][]   buffers                                 = new short[256][160];
  int         ix                                      = 0;
  private boolean     stopped                         = false;

  private void startRecording() {

    android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_URGENT_AUDIO);
    try {
      int N = AudioRecord.getMinBufferSize (  
                          RECORDER_SAMPLERATE, 
                          RECORDER_CHANNELS, 
                          RECORDER_AUDIO_ENCODING) * 20;

      recorder = new  AudioRecord(AudioSource.MIC,
                    RECORDER_SAMPLERATE, 
                    RECORDER_CHANNELS,
                    RECORDER_AUDIO_ENCODING,N );        

      recorder.startRecording();

      while(!stopped) …