The book "Digital filter banks: analysis, synthesis and application in multimedia systems: a teaching manual for students of the specialty" by A. A. Petrovsky is a unique and profound work that immerses the reader in the world of digital signal processing and multimedia technologies. This manual is not just a textbook, but a real find for students, graduate students and specialists seeking to master modern methods of working with digital data. In his book, Petrovsky explores key aspects of the design and application of digital filter banks, which play an important role in signal processing and multimedia systems. It offers the reader not only theoretical foundations, but also practical recommendations, which makes the material accessible and understandable. Each section of the book is filled with examples and tasks that will help consolidate the knowledge gained. Readers will be able to learn how to effectively apply filters to improve the quality of sound and image, as well as to solve various problems in the field of data processing. The book will be of interest not only to students of technical specialties, but also to everyone who is fond of digital technology, multimedia and signal processing. If you are a student of the faculty of computer science, radio engineering or electronics, then this guide will become an indispensable assistant in your studies. It will also be useful to practicing engineers and developers who want to deepen their knowledge in the field of digital signal processing and multimedia systems. The topics raised in the book cover a wide range of issues, from the basics of filtering theory to complex synthesis and analysis algorithms. Petrovsky emphasizes the importance of the correct choice of filter parameters to achieve optimal quality of signal processing It also explores current approaches to implementing filters in software and hardware systems, making the book relevant for professionals working in the rapidly changing field of technology. The author's style is distinguished by clarity and logical presentation, which allows the reader to easily assimilate complex concepts. Petrovsky uses visual illustrations and diagrams that help to better understand the material. His approach to learning is based on the practical application of theory, which makes the learning process more fun and effective. In addition, A. A. Petrovsky is known for his other work in the field of digital signal processing and multimedia technologies. His research and publications have gained recognition in academia, and many students and professionals have already appreciated his contributions in this area. The book “Digital Filter Banks” not only complements his portfolio, but also serves as an important step in popularizing knowledge about digital technologies. If you are looking for a tutorial that will help you understand the complex aspects of digital signal processing, then Digital Filter Banks will be an excellent choice. This book will not only expand your knowledge, but also inspire new research and development in the field of multimedia systems. Do not miss the opportunity to immerse yourself in the fascinating world of digital technologies with A. A. Petrovsky!