Rating: 
Summary: The Bible
Review: This book is the Bible of DSP. If you wish to learn about digital filtering, this is the first book you should get. It will most likely be the only book you need.
Rating: 
Summary: Ok beginners book
Review: This book seems to follow the disappointing (to me at least) model of many engineering texts--that being the reluctance to present new mathematical concepts/techniques. Almost every mathematical concept/technique used in this book was already covered by the prerequisite text by Oppenheim, "Signals and Systems." It would seem that a subject so entrenched with complex numbers and polynomials could be taught in such a manner that would include theorems and concepts from these well-established mathematical disciplines. Note that I did not read the chapter on Hilbert transforms, or the section on the Discrete Cosine Transform, so I cannot comment on them. I did read all other sections. The sections on random signals do introduce new concepts, but they were only put in as a quick review of concepts meant to be studied in a random processes class. On the other hand, this is a very readable book, which has proven very useful. It does present MANY new engineering concepts. If analytic function theory had been introduced, this book probably would not have room left to be as complete a reference for existing introductory DSP theory. However by avoiding the math it has limited the continuing students ability to develop insight into deeper theory, or develop new theory.
Rating:
Summary: Ok beginners book
Review: This book seems to follow the disappointing (to me at least) model of many engineering texts--that being the reluctance to present new mathematical concepts/techniques. Almost every mathematical concept/technique used in this book was already covered by the prerequisite text by Oppenheim, "Signals and Systems." It would seem that a subject so entrenched with complex numbers and polynomials could be taught in such a manner that would include theorems and concepts from these well-established mathematical disciplines. Note that I did not read the chapter on Hilbert transforms, or the section on the Discrete Cosine Transform, so I cannot comment on them. I did read all other sections. The sections on random signals do introduce new concepts, but they were only put in as a quick review of concepts meant to be studied in a random processes class. On the other hand, this is a very readable book, which has proven very useful. It does present MANY new engineering concepts. If analytic function theory had been introduced, this book probably would not have been as complete a reference for existing introductory DSP theory. However by avoiding the math it has limited the continuing students ability to develop insight into deeper theory, or develop new theory.
Rating:
Summary: The reference for DSP
Review: This is probably the most complete reference in DSP. It's full of examples covering the whole stuff in DSP. However this is certainly not fur use as an introductory book because the aim is not the explanation of fundamental concepts in DSP (for that go to Lyons "Understanding Digital Signal Processing"). Maybe it is possible to learn DSP with this book but then as a companion of a good undergrad course, not for self-study.As stated by another reviewer, this book is over-crowded with developments, details and examples that could be overwhelming to the newcomer. This is probably its biggest drawback, in that its completeness hinders on its readability. So be aware that this is not an easy DSP book, it's THE DSP book.
Rating: 
Summary: yes, it is!
Review: This is the book that focuses on the concept more than any thing else which ,in turn, build up your insight through the material.
This book addresses discrete time signal processing issues in an ordinary fashion and doesn't cover more advanced topics like wavelets or statistical signal processing.
Maybe you would be interested in this book if you are that senior/first year graduate student looking forward a nice job with a high salary or a DSP engineer that is interested in keeping his job :)
Overall, nothing can get better than Oppenheim DSP 1975 but however, this is a nice volume if you don't have the preceding one.
It is almost the same quality isn't it?
Rating:
Summary: A good reference if you don't hate calculus
Review: You cannot go out in the field of DSP without having heart of the names Oppenheimer & Schafer. I used the book as guiding text during my studies at the university and I frequently found the answers to my questions. In case you feel comfortable with calculus of complex variables, this book may be considered for selfstudy. If you are not familiar with advanced mathematics, perhaps you should think twice before buying this book. However, if you are professionally active in the area of DSP, you must have it in your library since it inspired many of your collegues in developping powerful applications.
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