WAV

The wave file format is broken up into RIFF chunks.

RIFF
<4 bytes>
WAVE
RIFF

RIFF IDENTIFIER    (4 Bytes)
RIFF SIZE          (4 Bytes)
<RIFF INFORMATION> (RIFF SIZE - 8)

"fmt "
DWORD dwRiffSize;
WORD  wFormatTag;         // Format category

WORD  wChannels;          // Number of channels

DWORD dwSamplesPerSec;    // Sampling rate

DWORD dwAvgBytesPerSec;   // For buffer estimation

WORD  wBlockAlign;        // Data block size

WORD  wBitsPerSample;

"data"              4 Bytes
DATA SIZE           4 Bytes
<YOUR Data Audio>   (DATA SIZE - 8)

    GetDlgItem(IDC_FILENAME)->GetWindowText(csT1_);
    ZeroMemory(&m_stmmIF,sizeof(MMIOINFO));
    DeleteFile((PCHAR)(LPCTSTR)csT1_);

    m_hOPFile=mmioOpen((PCHAR)(LPCTSTR)csT1_,&m_stmmIF,MMIO_WRITE | MMIO_CREATE);
    if(m_hOPFile==NULL)
        throw "Can not open file...";

    ZeroMemory(&m_stckOutRIFF,sizeof(MMCKINFO));
    m_stckOutRIFF.fccType = mmioFOURCC('W', 'A', 'V', 'E');
    mRes=mmioCreateChunk(m_hOPFile, &m_stckOutRIFF, MMIO_CREATERIFF);
    if(mRes!=MMSYSERR_NOERROR)
    {
        StoreError(mRes,FALSE,"File: %s ,Line Number:%d",__FILE__,__LINE__);
        throw m_csErrorText;
    }
    ZeroMemory(&m_stckOut,sizeof(MMCKINFO));
    m_stckOut.ckid = mmioFOURCC('f', 'm', 't', ' ');
    m_stckOut.cksize = sizeof(m_stWFEX);
    mRes=mmioCreateChunk(m_hOPFile, &m_stckOut, 0);
    if(mRes!=MMSYSERR_NOERROR)
    {
        StoreError(mRes,FALSE,"File: %s ,Line Number:%d",__FILE__,__LINE__);
        throw m_csErrorText;
    }
    nT1=mmioWrite(m_hOPFile, (HPSTR) &m_stWFEX, sizeof(m_stWFEX));
    if(nT1!=sizeof(m_stWFEX))
    {
        m_csErrorText.Format("Can not write Wave Header..File: %s ,Line Number:%d",__FILE__,__LINE__);
        throw m_csErrorText;
    }
    mRes=mmioAscend(m_hOPFile, &m_stckOut, 0);
    if(mRes!=MMSYSERR_NOERROR)
    {
        StoreError(mRes,FALSE,"File: %s ,Line Number:%d",__FILE__,__LINE__);
        throw m_csErrorText;
    }
    m_stckOut.ckid = mmioFOURCC('d', 'a', 't', 'a');
    mRes=mmioCreateChunk(m_hOPFile, &m_stckOut, 0);
    if(mRes!=MMSYSERR_NOERROR)
    {
        StoreError(mRes,FALSE,"File: %s ,Line Number:%d",__FILE__,__LINE__);
        throw m_csErrorText;
    }
...
        mmioWrite(m_hOPFile,pHdr->lpData,pHdr->dwBytesRecorded);
...
    if(m_hOPFile)
    {
        mRes=mmioAscend(m_hOPFile, &m_stckOut, 0);
        if(mRes!=MMSYSERR_NOERROR)
        {
            StoreError(mRes,FALSE,"File: %s ,Line Number:%d",__FILE__,__LINE__);
        }
        mRes=mmioAscend(m_hOPFile, &m_stckOutRIFF, 0);
        if(mRes!=MMSYSERR_NOERROR)
        {
            StoreError(mRes,FALSE,"File: %s ,Line Number:%d",__FILE__,__LINE__);
        }
        mmioClose(m_hOPFile,0);
        m_hOPFile=NULL;
    }

참조 사이트:

http://www.codeproject.com/KB/audio-video/wavefiles.aspx?display=Print
http://www.codeproject.com/KB/winsdk/SoundRecord.aspx?display=Print