App Notes are documents that introduce signal processing and/or plug-in programming concepts; they are kind of like addendums to my book. Each App Note consists of a document and a sample RackAFX Plug-In Project. The two are intended to be used together for the study and understanding of a concept. On this page, the app note authors include myself, my students, and any contributions from RackAFX users. You can find more App Notes on the Bonus App Note page.