如何加长byte []的长度以使wav文件更长？

Question

现在我试图将示例wav文件放入byte []，然后再将byte []导回到wav文件。

我成功了但是当我尝试连接byte []以使wav文件更长时，结果与concat之前的结果相同。

我尝试过1次打鼓输入（2秒），我试图获得2次打鼓但结果仍然是1次打鼓，2秒。

这里主要是混合＆amp;将byte []转换为wav

xmlns:app2="http://schemas.android.com/apk/res-auto"

这里是将wav转换为byte []

的类

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.util.Scanner;

import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.UnsupportedAudioFileException;

import Samples.Percussion;

public class Main {
public static Percussion snareWet;
public static void main(String[] args) throws IOException {

    // TODO Auto-generated method stub
    Scanner sc = new Scanner(System.in);
    System.out.println("Instrument Type");
    String type = sc.nextLine();
    try {
        snareWet = new Percussion(type);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    System.out.println("BPM");
    String bpm = sc.nextLine();
    System.out.println("Instrument : "+type+" BPM : " + bpm);

    byte[] song;
    song = concat(snareWet.getAudioBytes(),snareWet.getAudioBytes());


    AudioInputStream oAIS = null;

    ByteArrayInputStream oInstream = new ByteArrayInputStream(song);
    try {
         oAIS = AudioSystem.getAudioInputStream(oInstream);
    } catch (UnsupportedAudioFileException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    File out = new File("result/testDouble.wav");
    AudioSystem.write(oAIS,AudioFileFormat.Type.WAVE,out);

}

public static byte[] concat(byte[] a, byte[] b) {
       int aLen = a.length;
       int bLen = b.length;
       byte[] c= new byte[aLen+bLen];
       System.arraycopy(a, 0, c, 0, aLen);
       System.arraycopy(b, 0, c, aLen, bLen);
       return c;
    }

}