typedef struct gsm610waveformat_tag {
WAVEFORMATEX    wfx;
WORD                    wSamplesPerBlock;
} GSM610WAVEFORMAT;

typedef GSM610WAVEFORMAT *PGSM610WAVEFORMAT;

typedef GSM610WAVEFORMAT NEAR    *NPGSM610WAVEFORMAT;

typedef GSM610WAVEFORMAT FAR     *LPGSM610WAVEFORMAT;