Lattice Wave digital Filters

摘要

There has been a lot written about the design and implementation of digital filters over the years and I periodically survey the literature to try and keep up with it. It seemed the right time to look around again when I decided to build a digital color organ [1] which would require digital filtering. During this latest survey, I came upon Lattice Wave Digital Filters (LWDFs) which I was not familiar with. These filters piqued my interest as they had intriguing properties directly applicable to my application.