在android中合併兩個或多個.wav文件

Question

首先，我必須告訴你，我是android新手。我想結合兩個.wav（音頻文件）文件。我已經使用了它，使用javax包很容易將它們結合起來，但它在android上不受支持。你能告訴我如何在android中做到這一點。你能向我推薦任何可以提供幫助的教程或圖書館嗎？ Thanx提前

Answer 1

作爲一個新手，用戶將只讀取文件中的字節並將其與第二個文件連接起來！

但它沒有這樣工作。你必須非常小心波文件頭，而組合兩個文件。不幸的是，我已經準備好與我的片段，這將幫助你。

在這裏你去

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); 
}