Impulse response of digital filter, calculating by second-order-section.
int ocmsp_impz_sos( double * ph, double * pt, UINT n, const double * pSOS, UINT nsec, double gain, double fs = 1.0 )
Return OE_NOERROR if succeed, otherwise, non-zero error code is returned (OE_NULL_POINTER, OE_INVALID_SIZE or OE_BAD_PARAM)
ocmsp_impz
ocmsp.h