spll_obj->ylf[0]=-(spll_obj->lpf_coeff.A1_lf*spll_obj->ylf[1])+(spll_obj->lpf_coeff.B0_lf*spll_obj->ynotch[0])+(spll_obj->lpf_coeff.B1_lf*spll_obj->ynotch[1]); //update array for future use spll_obj->ynotch[2]=spll_obj->ynotch[1]; spll_obj->...