混响算法导致噪声和削波

Question

我是java编程的新手，我特别是DSP编程，但我试图将混响应用于.wav文件。我使用的一些代码来自：Reverb Algorithm，但似乎我并不完全理解它。当我运行我的代码时，我会得到随着时间的推移而增长的噪音，最终也会“削波”。我认为它与我的缓冲区有关，或者我使用“剪辑”来播放精彩的音频流，但我不确定。 如果有人能够看一下并提出一些改进我的代码的想法，我将非常感激。

我使用此代码：

public void Reverbstart() throws InterruptedException, UnsupportedAudioFileException, IOException, LineUnavailableException {

    int bufferLength = 4000_000;
    Clip clip;
    Line line;
    Line.Info linfo = new Line.Info(Clip.class);
    line = AudioSystem.getLine(linfo);
    clip = (Clip) line;

    File sourceFile = new File("some audiofile");

    AudioFileFormat fileFormat = AudioSystem.getAudioFileFormat(sourceFile);

    AudioFormat audioFormat = fileFormat.getFormat();

    System.out.println(audioFormat);

    AudioInputStream ais = AudioSystem.getAudioInputStream(sourceFile);
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    int nBufferSize = bufferLength * audioFormat.getFrameSize();
    byte[]  byteBuffer = new byte[nBufferSize];

    int nBytesRead = ais.read(byteBuffer);
    baos.write(byteBuffer, 0, nBytesRead);

    byte[] AudioData = baos.toByteArray();

    int delayMilliseconds = 3000; 
    int delaySamples = (int)((float)delayMilliseconds * 44.1f); //44100 Hz sample rate
    float decay = 0.5f;

    for (int i = 0; i < AudioData.length - delaySamples; i++){

        AudioData[i] += (short)((float)AudioData[i]);
        AudioData[i + delaySamples] += (short)((float)AudioData[i] * decay);
    }

    ByteArrayInputStream bais = new ByteArrayInputStream(AudioData);
    AudioInputStream outputAis = new AudioInputStream(bais, audioFormat,AudioData.length/ audioFormat.getFrameSize());


    clip.open(outputAis);

    clip.start();
    Thread.sleep(10000);
    System.out.println(clip.getFramePosition());


}