Android的无法合并两个波形文件 [英] Android Unable to merge two wave files

问题描述

我在android系统工作。我想合并两个波形文件，并希望创建第三个文件。为此，我创建了两个输入流，然后试着写这些输入流到一个输出流文件。

I am working in android. I want to merge two wave files and want to create third file. For this I create two input streams and then trying to write those input streams into one output stream file.

这是我的code： -

 File file = new File("/sdcard/z.wav");
        File file1 = new File("/sdcard/zz.wav");
        InputStream is = new FileInputStream(file);
        InputStream is1 = new FileInputStream(file1);

        // Get the size of the file
        long length = file.length();
        long length1 = file1.length();


        // Create the byte array to hold the data
        byte[] bytes = new byte[(int)length];
        byte[] bytes1 = new byte[(int)length1];

        // Read in the bytes
        int offset = 0;
        int numRead = 0;
        while (offset < (int)length &&( numRead=is.read(bytes, offset, bytes.length-offset)) >= 0) {
            offset += numRead;
        }

        int offset1 = 0;
        int numRead1 = 0;
        while (offset1 < (int)length1 &&( numRead1=is1.read(bytes1, offset1, bytes1.length-offset1)) >= 0) {
            offset1 += numRead1;
        }





        FileOutputStream fos=new FileOutputStream("sdcard/guruu.wav");
        Log.v("Trying Activity","before first write");
        fos.write(bytes);

        fos.write(bytes1,0,bytes1.length);
        fos.write(bytes);
        fos.close();

        is.close();
        is1.close();

当我玩输出文件guruu.wav那么文件1 ，它是不是在玩file2的内容这只正在播放的文件。请给我建议我做了什么错误。是任何其他方式做到这一点？

when I play output file guruu.wav then this only playing file of file1, it is not playing content of file2. Please suggest me what mistake I have done. Is any other way to do this ?

我对这个很新，所以请不要投下来了。

I am very new in this so please do not down vote it.

感谢您提前。

推荐答案

您不合并数据，你只是串联的。

You are not merging the data, you are simply concatenating it.

因此​​，你最终会包含一个文件：

Thus you end up with one file containing:

• 文件1 WAV文件头


• 文件1组音频数据


• 文件2 WAV文件头


• 文件2的音频数据

理解的是，当有人读取该文件回来打它，他们认为这是

Understandably, when someone reads this file back to play it, they see it as

• WAV文件头


• 音频数据


• 在文件的结尾，他们甚至没有得到考虑的一些垃圾数据。

要真正合并这些文件，则需要适当考虑的WAV文件的内部结构。

To truly merge these files, you will need to properly consider the internal structure of the WAV files.

这篇关于Android的无法合并两个波形文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！