typedef struct adpcmcoef_tag {
        short   iCoef1;
        short   iCoef2;
} ADPCMCOEFSET;

typedef ADPCMCOEFSET       *PADPCMCOEFSET;

typedef ADPCMCOEFSET NEAR *NPADPCMCOEFSET;

typedef ADPCMCOEFSET FAR  *LPADPCMCOEFSET;