Reference for PCM file with wav-header : bytes variable description 0 - 3 'RIFF'/'RIFX' Little/Big-endian 4 - 7 wRiffLength length of file minus the 8 byte riff header 8 - 11 'WAVE' 12 - 15 'fmt ' 16 - 19 wFmtSize length of format chunk minus 8 byte header 20 - 21 wFormatTag identifies PCM, ULAW etc 22 - 23 wChannels 24 - 27 dwSamplesPerSecond samples per second per channel 28 - 31 dwAvgBytesPerSec non-trivial for compressed formats 32 - 33 wBlockAlign basic block size 34 - 35 wBitsPerSample non-trivial for compressed formats PCM formats then go straight to the data chunk: 36 - 39 'data' 40 - 43 dwDataLength length of data chunk minus 8 byte header 44 - (dwDataLength + 43) the data (+ a padding byte if dwDataLength is odd) |