libin,
Thanks for your post. LabVIEW ships with VIs already designed to perform basic to advanced IIR and FIR filtering operations. The Filter Express VI is the easiest and quickest way to perform IIR or FIR filtering. For a lower level approach take a look at Filters palette found in All Functions>>Analyze>>Signal Processing>>Filters. The
Digital Filter Design Toolkit is another tool that can reduce the time required to implement your digital filter designs by providing an interactive environment for the filter design process.
Hope this helps. Good luck with your application!
Scott T
Applications Engineer
National Instruments
