使用cpp编写和加载wav文件

Question

我一直在研究一个基于带有cpp的wav文件的项目。但无论我放入什么，我总是得到的输出只是原始输入的1/2大小。我使用的算法如下： http://rogerchansdigitalworld.blogspot.com/2010/05/how-to-read-wav-format-file-in-c.html http://ltheory.com/blog/writeWav.txt

任何人都可以给出提示吗？

我的主要功能是：

int main()
{
    string filename = "U:\\workspace\\ECE420\\psola.github\\aa.wav";
    string directory;
    const size_t last_slash_idx = filename.rfind('\\');
    if (std::string::npos != last_slash_idx)
    {
        directory = filename.substr(0, last_slash_idx);
    }

    string filename1 = "U:\\workspace\\ECE420\\psola.github\\voiceprocessed.wav";
    string directory1;
    const size_t last_slash_idx1 = filename1.rfind('\\');
    if (std::string::npos != last_slash_idx1)
    {
        directory1 = filename1.substr(0, last_slash_idx1);
    }

    WavData song;
    int num = filename.size();
    char file_char[100];
    for (int a=0;a<=num;a++){
        file_char[a]=filename[a];
    }
    WavData song1;//

    int num1 = filename1.size();
        char file_char1[100];
        for (int a=0;a<=num1;a++){
            file_char1[a]=filename1[a];
        }


    loadWaveFile(file_char,&song);
    cout<<"there are "<<song.size/2<<" samples in this WAV file."<<endl;


   writeWAVData(file_char1, song.data, song.size, 44100, 1);
   cout<<"2,there are "<<song1.size/2<<" samples in this WAV file."<<endl;

   cout<<"success"<<endl;

    return 0;


        }