4

我写了一个程序，它打开 wav 文件并通过控制台播放它们，然后修改声音并重放它......如何用修改后的声音保存一个新的 wav 文件？所以本质上我想创建一个 wav 文件并将修改后的结果写入它。我用于WAVEFORMATEX音频的数据。

我又做了一些工作，并创建了 wav 文件，但它无法播放

这是我的代码：

// writes the modified audio data into a .WAV file
void writeWaveFile(char* filename,WAVEFORMATEX& wfx)
{   
    FILE* file = fopen(filename, "wb");

    if (file)
    {
        // write wave header 
        unsigned short formatType = wfx.wFormatTag;
        unsigned short numChannels = wfx.nChannels;
        unsigned long  sampleRate = wfx.nSamplesPerSec;
        unsigned short bitsPerChannel = wfx.wBitsPerSample;
        unsigned short bytesPerSample = wfx.nAvgBytesPerSec;
        unsigned long  bytesPerSecond = wfx.nAvgBytesPerSec;
        unsigned long  dataLen = wfx.nBlockAlign;

        const int fmtChunkLen = 16;
        const int waveHeaderLen = 4 + 8 + fmtChunkLen + 8;

        unsigned long totalLen = waveHeaderLen + dataLen;

        fwrite("RIFF", 4, 1, file);
        fwrite(&totalLen, 4, 1, file);
        fwrite("WAVE", 4, 1, file);
        fwrite("fmt ", 4, 1, file);
        fwrite(&fmtChunkLen, 4, 1, file);
        fwrite(&formatType, 2, 1, file);
        fwrite(&numChannels, 2, 1, file);
        fwrite(&sampleRate, 4, 1, file);
        fwrite(&bytesPerSecond, 4, 1, file);
        fwrite(&bytesPerSample, 2, 1, file);
        fwrite(&bitsPerChannel, 2, 1, file);

        // write data

        fwrite("data", 4, 1, file);
        fwrite(&dataLen, 4, 1, file);
        //fwrite(data, dataLen, 1, file);

        // finish

        printf("Saved audio as %s\n", filename);
        fclose(file);
    }
    else
        printf("Could not open %s to write audio data\n", filename);
}
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2 回答 2

0

You can write the file yourself completely, however there is a better idea to use helper API for this. See Save wave file using waveInOpen for code references and details.

于 2013-05-20T11:41:08.277 回答
-4

我结合了一些代码并在以下链接中制作了源代码。它记录 10 秒并将缓冲区保存到 .wav 文件。就这么简单。对不起，我不能在这里发布代码。

http://concon.comule.com/wero/mainsound.cpp

于 2015-08-30T17:20:24.770 回答