The book Digital Signal Processing: Principles and Implementations has been written according to the syllabus of the subject 'Digital Signal Processing' prescribed by most of the degree engineering universities and institutions for final year undergraduate and first year postgraduate courses in Electronics and Communication/Telecommunication Engineering. This book contains twelve chapters which have been expressed in a simple, systematic and lucid style. A large number of solved examples, review questions and computer programs make the book valuable and easily understood. Most of the solved problems are verified using computer simulation. Also some practical applications are mentioned and explained in this book which the students can take as their project work.