This book is concerned with the processing of signals that have been sam- pled and digitized. The fundamental theory behind Digital Signal Process- ing has been in existence for decades and has extensive applications to the fields of speech and data communications, biomedical engineering, acous- tics, sonar, radar, seismology, oil exploration, instrumentation and audio signal processing to name but a few 87]. The term "Digital Signal Processing," in its broadest sense, could apply to any operation carried out on a finite set of measurements for whatever purpose. A book on signal processing...