This book has grown from notes used by the authors to instruct fast
transform classes. One class was sponsored by the Training Department of
Rockwell International, and another was sponsored by the Department of
Electrical Engineering of The University of Texas at Arlington.
Some of
the material was also used in a short course sponsored by the University
of Southern California. The authors are indebted to their students for
motivating the writing of this book and for suggestions to improve it.
