将回声效果转换为Wave文件（在Oreo下面）

Question

我正在使用打击代码来产生回声效果，但输出文件始终损坏，相同的速率将是输入文件的速率。

    public static void filter(File file_input, File file_output, int sampleRate) throws IOException {
    byte[] samples = readFile(file_input);
    byte[] delayBuffer = new byte[samples.length];

    RandomAccessFile randomAccessFile = new RandomAccessFile(file_output, "rw");
    //seek to skip 44 bytes
    randomAccessFile.seek(44);
    int N = sampleRate / 8;

    for (int n = N + 1; n < delayBuffer.length; n++) {
        delayBuffer[n] = (byte) (samples[n] + samples[n - N]);
    }
    randomAccessFile.write(delayBuffer);
}

谢谢