The use of digital techniques in signal processing opens up a wide range of potential advantages such as precise systems design, equipment standardization and stability of performance characteristics, as well as ease of monitoring and control. It is the aim of this book to give access to digital techniques by relating theory and practice. The text, designed primarily for undergraduates, compares the merits of various techniques and attempts to present the most valuable results in a form suitable for immediate implementation in system design and for rapid evaluation of a project which is to be developed on a short time scale. At the end of each chapter there are several exercises which allow readers to test their understanding of the material in that chapter and become familiar with its applications.