Speech Coding Algorithms : Foundation and Evolution of Standardized Coders

Speech coding is a highly mature branch of signal processing deployed in products such as cellular phones, communication devices, and more recently, voice over internet protocol This book collects many of the techniques used in speech coding and presents them in an accessible fashion Emphasizes the foundation and evolution of standardized speech coders, covering standards from 1984 to the present The theory behind the applications is thoroughly analyzed and proved A thought-provoking look at the historical and practical evolution of speech codingSpeech coding has evolved into a highly important branch of applied signal processing, resulting in an explosion of products such as cellular phones, answering machines, communication devices, and most recently, voice over Internet protocol. Because of the increasing demand for speech communication, speech coding technology has captured more and more attention from the research, standardization, and business communities-all of whom have been encouraged to pursue and investigate alternative coding methods with the objective of minimizing its deficiencies and limitations.Covering standards from the inception of digital communication, Speech Coding Algorithms: Foundation and Evolution of Standardized Coders compiles many of the complex techniques widely used in speech coding and presents them in a logical and accessible fashion. By understanding the principles, performances, and limitations of the most successful standards developed throughout history, practitioners will be able to gain sound insights of widely adopted methodologies, with the ultimate goal of developing the next generation of improved algorithms.A strong pedagogical format makes this text a valuable resource for professionals and students alike.*Theories behind each application are thoroughly analyzed and proven*A clear, simple writing style makes complex material easy to understand*Abundant charts and illustrations help to clarify ideas discussed*End of Chapter summaries, exercises, and references help to cement understanding and encourage further studySpeech Coding Algorithms: Foundation and Evolution of Standardized Coders is an invaluable textbook for students and researchers eager to enter the speech coding arena, providing a solid theoretical foundation as well as directions for further research. For professionals working in industry who need to access information regarding the many popular standards, the book represents a one-stop reference where the architecture, bit allocation, computational complexity, and operational aspects are thoroughly explained. Among the standards covered are:*FS 1015 LPC*TIA IS54 VSELP*ITU-T G.728 LD-CELP*ITU-T G.729 CS-ACELP*ETSI GSM 6.10 RPE-LTP*FS 1015 CELP*TIA IS96 VBR-CELP*FS MELP

• Speech coding is a highly mature branch of signal processing deployed in products such as cellular phones, communication devices, and more recently, voice over internet protocol
• This book collects many of the techniques used in speech coding and presents them in an accessible fashion
• Emphasizes the foundation and evolution of standardized speech coders, covering standards from 1984 to the present
• The theory behind the applications is thoroughly analyzed and proved

Focusing on the field as incorporated in the various industry standards, Chu (DoCoMo USA Labs) seeks to present speech coding techniques (conceived as a matured branch of signal processing) and their evolution in a coherent and accessible manner, focusing particularly on the computational procedures. He assumes prerequisites covered in most undergraduate electrical engineering curricula. Annotation (c)2003 Book News, Inc., Portland, OR (booknews.com). Speech coding has evolved into a highly matured branch of signal processing, with deployment of a plethora of products such as cellular phones, answering machines, communication devices, and more recently, voice over internet protocol (VoIP). In general, speech coding is a procedure to represent a digitized speech signal using as few bits as possible, maintaining at the same time a reasonable level of speech quality.