wav ファイルフォーマット'fmt ' チャンク構造体 #define FormatID 'fmt ' /* chunkID for Format Chunk. NOTE: There is a space at the end of this ID. */ typedef struct { ID chunkID; long chunkSize; short wFormatTag; unsigned short wChannels; unsigned long dwSamplesPerSec; unsigned long dwAvgBytesPerSec; unsigned short wBlockAlign; unsigned short wBitsPerSample; /* Note: there may be additional fields here, depending upon wFormatTa
