Fundamentals of Voice Quality Engineering in Wireless Networks

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Fundamentals of Voice-Quality Engineering in Wireless Networks   Dr Avi Perry Hardback  (ISBN-13: 9780521855952 | ISBN-10: 0521855950)

Also available in eBook format Published December 2006 
 
Network operators are faced with the challenge of maximizing the quality of voice transmissions in wireless communications without impairing speech or data transmission. This book provides a comprehensive survey of voice quality algorithms, features, interactions, and trade-offs, at the device and system level. Using a practitioner rather than algorithm-designer angle, this book is unique. It elaborates on the root cause of impairments and ways for resolving them, as well as methodologies for measuring and quantifying voice quality before and after applying the remedies. The key issues are exemplified using case studies. Avoiding complex mathematics, the approach is based on real and sizable field experience supported by scientific and laboratory analysis. This title is suitable for practitioners in the wireless communications industry and graduate students in electrical engineering. Further resources for this title including a range of audio examples will be available online at www.cambridge.org/9780521855952.

Contents Introduction; Part I. Voice Quality Foundations: 1. An overview of voice coding architectures in wireless communications; 2. Quantitative assessment of voice quality; Part II. Applications: 3. Electrical echo and echo cancellation; 4. Acoustic echo and its control; 5. Noisy ambience, mobility, and noise reduction; 6. Speech level control; Part III. Wireless Architectures: 7. Mobile-to-mobile stand-alone VQS architectures and their implications on data communications; 8. The VQS evolution to 3G; Part IV. A Network Operator Guide for Selecting, Appraising, and Testing VQS: 9. A network operator guide to testing and appraising voice quality systems; 10. Service provider's system, management, and delivery, requirements; 11. Making economically sound investment decisions concerning voice quality systems; Part V. Managing the Network: 12. Trouble shooting and case studies; Part VI. Afterthoughts and Some Fresh Ideas: 13. Tracer probe; 14. My sound; 15. A procedure for evaluating and contrasting new wireless codecs performance with and without VQS; 16. The theory of sleep; Part VII. Recordings: 17. Audio illustrations; Glossary of common voice quality systems terminology; Abbreviations.

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Readers Reviews

5 Star amazon.com
A great book for Engineers working in this field, March 8, 2009 By  Wai Kit Leung (MA USA) -  See all my reviews        I was introduced to this book by my colleague. He lent me a copy he had. I was an engineer in audio/acoustics who started to work in the mobile telephony field. I found a wealth of information in the book, and found the book easy to read at the same time. No high-brow, difficult to read writing at all.

I bought my own copy shortly after. I read this book again just prior to my interview with my present employer. It certainly helped me landing my job! This is an excellent book, and I heartlily recommend all who are working in this area.

5 Star Amazon.com

Great practical review of telecom voice quality issues, June 28, 2007 By  M. Kirk (Midwest Fan) - See all my reviews
   Dr. Perry has written a great reference on voice quality issues found in real-world telecom networks. This book goes beyond the "can you hear me now?" level of network voice quality. His careful coverage of voice quality concepts will allow newcomers to grasp the key essentials. Sufficient references are provided to allow a "deeper dive" into more technical details if required. The book's website offers several audio WAV files to demonstrate the concepts presented in the book. He assesses the risks to voice quality with the migration to IP based voice transport

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