Get the length of the impulse response for a digital filter, calculating by second-order-section.
int ocmsp_impzlength_sos( UINT * pn, const double * pSOS, UINT nsec )
Return OE_NOERROR if succeed, otherwise, non-zero error code is returned (OE_NULL_POINTER, OE_INVALID_SIZE or OE_BAD_PARAM)
ocmsp_impzlength
ocmsp.h