This hands-on guide for circuit designers, technicians, and students discusses digital filter specification and design techniques. The book's coverage begins with a review of filter design fundamentals, complete with all the necessary mathematical background, and proceeds through the theory, operation, design and implementation of every available type of digital filter. The book compiles practical information from many diverse, technical sources and translates it into plain English. It is extensively cross-referenced and breaks down complicated procedures with step-by-step algorithms. It includes application examples and is accompanied by a disk of design programmes written in the C language.