FilCusT is a software add-on for LabVIEW. With this add-on, you can design custom-shaped filters for different applications and export them to Xilinx coefficient (COE) files, to LabVIEW FPGA projects, or to text files. FilCusT features a frequency response ripple correction mode, which you can use to design a filter with the opposite frequency response down to 0.3 dB to 0.5 dB of 3 dB to 6 dB. You can then apply this filter to your signal before or after it passes through the analog signal path.