This preface is addressed to instructors as well as students at the junior-senior
level for the following reasons. I have been teaching courses on digital signal
processing, including its applications and digital filter design, at the undergraduate
and the graduate levels for more than 25 years. One common complaint I have
heard from undergraduate students in recent years is that there are not enough
numerical problems worked out in the chapters of the book prescribed for the
course. But some of the very well known textbooks on digital signal processing
have more problems than do a few of the books published in earlier years.
However, these books are written for students in the senior and graduate levels,
and hence the junior-level students find that there is too much of mathematical
theory in these books. They also have concerns about the advanced level of
problems found at the end of chapters. I have not found a textbook on digital
signal processing that meets these complaints and concerns from junior-level
students. So here is a book that I have written to meet the junior students' needs
and written with a student-oriented approach, based on many years of teaching
courses at the junior level.