合并在android的两个或更多的.wav文件 [英] Merging two or more .wav files in android

问题描述

首先，我必须告诉你，我是新来的机器人。我想结合两个.WAV（音频文件）的文件。我用Google搜索一下吧，很容易使用的javax包，将它们结合起来，但它不支持在Android上。你能告诉我如何做到这一点的机器人。你能否提供我任何教程或库，可以帮助？ 感谢名单提前

First of all I must tell you that I am new to android. I want to combine two .wav (audio file) files. I have googled about it , it is easy to combine them using javax package but it is not supported on android. Can you tell me how to do this in android. Can you suggest me any tutorial or library that can help? Thanx in advance

推荐答案

作为一个新手用户将刚刚从文件中读取的字节数，并与第二个文件Concat的它！

As a novice the user will just read bytes from the file and concat it with second file!!

但它不工作了way.You必须非常小心波形文件头，同时结合两个file.fortunately我已经准备好片段与我，这将帮助你。

But it doesnt work that way.You have to be very careful about wave file header while combining two file.fortunately i have ready snippet with me which will help you.

在这里你去

private void CombineWaveFile(String file1, String file2) {
    FileInputStream in1 = null, in2 = null;
    FileOutputStream out = null;
    long totalAudioLen = 0;
    long totalDataLen = totalAudioLen + 36;
    long longSampleRate = RECORDER_SAMPLERATE;
    int channels = 2;
    long byteRate = RECORDER_BPP * RECORDER_SAMPLERATE * channels / 8;

    byte[] data = new byte[bufferSize];

    try {
        in1 = new FileInputStream(file1);
        in2 = new FileInputStream(file2);

        out = new FileOutputStream(getFilename3());

        totalAudioLen = in1.getChannel().size() + in2.getChannel().size();
        totalDataLen = totalAudioLen + 36;

        WriteWaveFileHeader(out, totalAudioLen, totalDataLen,
        longSampleRate, channels, byteRate);

        while (in1.read(data) != -1) {

            out.write(data);

        }
        while (in2.read(data) != -1) {

            out.write(data);
        }

        out.close();
        in1.close();
        in2.close();

        Toast.makeText(this, "Done!!", Toast.LENGTH_LONG).show();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

private void WriteWaveFileHeader(FileOutputStream out, long totalAudioLen,
long totalDataLen, long longSampleRate, int channels, long byteRate)
throws IOException {

    byte[] header = new byte[44];

    header[0] = 'R';
    header[1] = 'I';
    header[2] = 'F';
    header[3] = 'F';
    header[4] = (byte)(totalDataLen & 0xff);
    header[5] = (byte)((totalDataLen >> 8) & 0xff);
    header[6] = (byte)((totalDataLen >> 16) & 0xff);
    header[7] = (byte)((totalDataLen >> 24) & 0xff);
    header[8] = 'W';
    header[9] = 'A';
    header[10] = 'V';
    header[11] = 'E';
    header[12] = 'f';
    header[13] = 'm';
    header[14] = 't';
    header[15] = ' ';
    header[16] = 16;
    header[17] = 0;
    header[18] = 0;
    header[19] = 0;
    header[20] = 1;
    header[21] = 0;
    header[22] = (byte) channels;
    header[23] = 0;
    header[24] = (byte)(longSampleRate & 0xff);
    header[25] = (byte)((longSampleRate >> 8) & 0xff);
    header[26] = (byte)((longSampleRate >> 16) & 0xff);
    header[27] = (byte)((longSampleRate >> 24) & 0xff);
    header[28] = (byte)(byteRate & 0xff);
    header[29] = (byte)((byteRate >> 8) & 0xff);
    header[30] = (byte)((byteRate >> 16) & 0xff);
    header[31] = (byte)((byteRate >> 24) & 0xff);
    header[32] = (byte)(2 * 16 / 8);
    header[33] = 0;
    header[34] = RECORDER_BPP;
    header[35] = 0;
    header[36] = 'd';
    header[37] = 'a';
    header[38] = 't';
    header[39] = 'a';
    header[40] = (byte)(totalAudioLen & 0xff);
    header[41] = (byte)((totalAudioLen >> 8) & 0xff);
    header[42] = (byte)((totalAudioLen >> 16) & 0xff);
    header[43] = (byte)((totalAudioLen >> 24) & 0xff);

    out.write(header, 0, 44);
}

这篇关于合并在android的两个或更多的.wav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！