class CAudio { public: CAudio (void); ~CAudio (void); DWORD GetLength ( void ); DWORD GetStatus ( void ); void LenChanged ( void ); void TimerDone ( void ); void Reset ( void ); void SetViIntr ( DWORD VI_INTR_TIME ); void SetFrequency ( DWORD Dacrate, DWORD System ); private: DWORD m_SecondBuff; DWORD m_Status; DWORD m_BytesPerSecond; int m_CountsPerByte; int m_FramesPerSecond; };