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我正在尝试使用 AudioRecord 将声音记录到一个数组(短或字节)中(MediaRecorder 就像一个魅力,但它只记录到文件,而不是数组)。但是,使用下面的代码我无法记录。当我尝试打印数组的内容时,我得到的只是零。我使用我的真实设备录制,而不是模拟器。

我将不胜感激任何建议。

public class SoundCapture extends Activity {

private int _buffer_size;
public final int SAMPLE_RATE = 8000;
private AudioRecord _recorder;
private short[] _wave;

public boolean captureSound() {
    _buffer_size = AudioRecord.getMinBufferSize(SAMPLE_RATE, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT);
    _wave = new short[_buffer_size];
    _recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, SAMPLE_RATE, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT, _buffer_size);

    _recorder.startRecording();

    //Recording for 5 seconds
    synchronized(this) {
        try{
            this.wait(5000);
        }
        catch(InterruptedException e) {
            e.printStackTrace();
            return false;
        }
    }
    _recorder.read(_wave, 0, SAMPLE_RATE);
    _recorder.stop();
    _recorder.release();
    _recorder = null;
    printWave();
    return true;
}

private void printWave() {
    System.out.println("Let the wave begin!!!   ");
    for(int i = 0; i < _wave.length; ++i) {
        System.out.print(_wave[i] + ", ");
    }
    System.out.println("The End!!!   ");
}


}
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