WAV文件创建

typedef struct WAVE
{
 short wFormatTag; //编码格式，包括WAVE_FORMAT_PCM，WAVEFORMAT_ADPCM等
 short nChannels; //声道数，单声道为1，双声道为2
 int nSamplesPerSec; //采样频率
 int nAvgBytesPerSec; //每秒的数据量
 short nBlockAlign; //块对齐
 short wBitsPerSample; //WAVE文件的采样大小
 short cbSize;
} WAVEFORMATEX, *PWAVEFORMATEX;

 

int m_WaveHeaderSize = 38;
 int m_WaveFormatSize = 18;
 int m_AudioDataSize =1024*1024*4;
 int m_WrittenBytes = 0;
 WAVEFORMATEX m_WaveFormatEx;
 m_WaveFormatEx.wFormatTag=1 ;
 m_WaveFormatEx.nSamplesPerSec=48000;
 m_WaveFormatEx.wBitsPerSample=16;
 m_WaveFormatEx.nChannels=2;
 m_WaveFormatEx.cbSize=0;
 m_WaveFormatEx.nBlockAlign=m_WaveFormatEx.nChannels*(m_WaveFormatEx.wBitsPerSample/8);
 m_WaveFormatEx.nAvgBytesPerSec=m_WaveFormatEx.nSamplesPerSec*m_WaveFormatEx.nBlockAlign;

 //
 FILE *m_file;
 string m_csFileName= "C://test.wav";
 m_file = fopen(m_csFileName.c_str(), "wb");
 //
 fwrite("RIFF", 1, 4, m_file);
 unsigned int Sec=(m_AudioDataSize + m_WaveHeaderSize);
 fwrite(&Sec, 1, sizeof(Sec), m_file);
 fwrite("WAVE", 1, 4, m_file);
 fwrite("fmt ", 1, 4, m_file);
 fwrite(&m_WaveFormatSize, 1, sizeof(m_WaveFormatSize), m_file);
 fwrite(&m_WaveFormatEx.wFormatTag, 1, sizeof(m_WaveFormatEx.wFormatTag), m_file);
 fwrite(&m_WaveFormatEx.nChannels, 1, sizeof(m_WaveFormatEx.nChannels), m_file);
 fwrite(&m_WaveFormatEx.nSamplesPerSec, 1, sizeof(m_WaveFormatEx.nSamplesPerSec), m_file);
 fwrite(&m_WaveFormatEx.nAvgBytesPerSec, 1, sizeof(m_WaveFormatEx.nAvgBytesPerSec), m_file);
 fwrite(&m_WaveFormatEx.nBlockAlign, 1, sizeof(m_WaveFormatEx.nBlockAlign), m_file);
 fwrite(&m_WaveFormatEx.wBitsPerSample, 1, sizeof(m_WaveFormatEx.wBitsPerSample), m_file);
 fwrite(&m_WaveFormatEx.cbSize, 1, sizeof(m_WaveFormatEx.cbSize), m_file);
 fwrite("data", 1, 4, m_file);
 fwrite(&m_AudioDataSize, 1, sizeof(m_AudioDataSize), m_file);

 char *Data = new char[1024*1024*4];
 fwrite(Data, 1, 1024*1024*4, m_file);
 fclose(m_file);

 delete []Data;