Digital signal processing is a difficult subject, especially for beginners, and this book does nothing to alleviate the situation for the new learner.
After reading multiple DSP books, it's painfully obvious that the explanations in this book are confusing and opaque. Often equations and mathematical proofs are buried within text paragraphs making it extremely difficult for the reader to follow along. The MATLAB experiments are not the panacea one is led to believe. I personally struggled in a DSP class for 6 weeks until I decided to go against the class requirements and I started over by reading the Oppenheim book. The Oppenheim book is a thorough treatment of the subject and is simply better.
The Oppenheim book, still difficult, but better explained and very thorough
Discrete-Time Signal Processing (3rd Edition) (Prentice Hall Signal Processing)
The Schaum's outline was useful as a reference and explained some of the fundamental concepts well, but I would NOT use it as the sole reference.
Schaums Outline of Digital Signal Processing, 2nd Edition (Schaum's Outline Series)
This book may be a better starter for the beginner due to its simpler explanations. Serious practitioners would probably move to Oppenheim eventually
Understanding Digital Signal Processing (3rd Edition)
This book provides almost all experimental learning with little math explanation. It's been useful for getting a "feeling" of how things work and was a lot of fun.
Practical Signal Processing
Furthermore, Mitra ensures that the problems at the end of the chapters are different for the International version of his book. I don't know how common this is, but I have never encountered this before in undergrad or graduate courses. I don't know what goals the author had in doing this besides possibly selling more books. I would like to give the person the benefit of doubt, but, like I said, I have no encountered this before.
This book helped me the most while working on my car. I used it as a tirestop when I jacked up the car. It forever resides in my trunk for this purpose.
