如何将混响效果附加到音频记录/ PCM数据并将其保存到文件中？

我想录制来自麦克风的输入，附加混响效果，并将结果保存到文件中。我的用例是一个应用程序，它允许您在录制后唱歌并选择不同的预设混响选项，然后保存您的性能并将其存储在后端服务器上。我发送到服务器的文件需要应用混响效果。

到目前为止，我已经能够使用 录制输入，并且可以添加混响效果来收听混响效果，但是我一直不知道如何保存嵌入混响效果的音频。以下是我到目前为止所拥有的：AudioRecordAudioTrack

private void startRecording() {
    final int bufferSize = AudioRecord.getMinBufferSize(SAMPLE_RATE, CHANNEL_CONFIG, AUDIO_FORMAT);
    mRecorder = new AudioRecord(MediaRecorder.AudioSource.VOICE_COMMUNICATION, SAMPLE_RATE, CHANNEL_CONFIG, AUDIO_FORMAT, bufferSize);
    if(NoiseSuppressor.isAvailable()) {
        NoiseSuppressor ns = NoiseSuppressor.create(mRecorder.getAudioSessionId());
        ns.setEnabled(true);
    }

    if(AcousticEchoCanceler.isAvailable()) {
        AcousticEchoCanceler aec = AcousticEchoCanceler.create(mRecorder.getAudioSessionId());
        aec.setEnabled(true);
    }

    mPlayer = new AudioTrack(AudioManager.STREAM_MUSIC, SAMPLE_RATE, AudioFormat.CHANNEL_OUT_MONO, AUDIO_FORMAT, bufferSize, AudioTrack.MODE_STREAM);
    PresetReverb reverb = new PresetReverb(1, mPlayer.getAudioSessionId());
    reverb.setPreset(PresetReverb.PRESET_LARGEHALL);
    reverb.setEnabled(true);

    mPlayer.setAuxEffectSendLevel(1.f);

    mRecorder.startRecording();
    mPlayer.play();

    new RecordingThread(mRecorder, mPlayer, bufferSize) {

        @Override
        public void onReleased() {
            mRecorder = null;
            mPlayer = null;
        }
    }.start();
}

public class RecordingThread extends Thread {

    private static final String TAG = RecordingThread.class.getSimpleName();

    private final AudioRecord mRecorder;
    private final AudioTrack mPlayer;
    private final int mBufferSize;

    public RecordingThread(AudioRecord recorder, AudioTrack player, int bufferSize) {
        mRecorder = recorder;
        mPlayer = player;
        mBufferSize = bufferSize;
    }

    @Override
    public void run() {
        byte[] buffer = new byte[mBufferSize];

        int read;
        while ((read = mRecorder.read(buffer, 0, buffer.length)) > 0) {
            mPlayer.write(buffer, 0, buffer.length);
        }

        mRecorder.release();
        mPlayer.release();

        onReleased();

        Timber.tag(TAG);
        Timber.i("Exited with code %s", read);
    }

    public void onReleased() {
    }
}

因此，理想情况下，能够将 连接到 而不是 上会很好，但是当我这样做时，我会得到：PresetReverbAudioRecordAudioTrack

java.lang.RuntimeException: Cannot initialize effect engine for type: 47382d60-ddd8-11db-bf3a-0002a5d5c51b Error: -3

所以现在我想我需要将PCM数据从管道传输到某个外部服务/库，或者使用混响算法的外观来修改缓冲区。AudioRecord