Speech Quality Of Voip

Author : Alexander Raake
Publisher : John Wiley & Sons
Page : 336 pages
File Size : 48,8 Mb
Release : 2007-01-11
Category : Technology & Engineering
ISBN : 9780470032992

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Speech Quality of VoIP by Alexander Raake Pdf

Finally a comprehensive overview of speech quality in VoIP from the user's perspective! Speech Quality of VoIP is an essential guide to assessing the speech quality of VoIP networks, whilst addressing the implications for the design of VoIP networks and systems. This book bridges the gap between the technical network-world and the psychoacoustic world of quality perception. Alexander Raake’s unique perspective combines awareness of the technical characteristics of VoIP networks and original research concerning the perception of speech transmitted across them. Starting from the network designer’s point of view, the different characteristics of the network are addressed, and then linked to features perceived by users. This book provides an overview of the available knowledge on the principal, relevant aspects of speech and speech quality perception, of speech quality assessment, and of transmission properties of telephone and VoIP networks, and of the related perceptual features and resulting speech quality. Discussing new research into the specific time-varying degradations VoIP brings along, but also the considerable potential of quality improvement to be achieved with wideband speech transmission, Alexander Raake demonstrates how network and service characteristics impact on the users perception of quality. Speech Quality of VoIP: Offers an insight into speech quality of VoIP from a user's perspective. Presents an overview of different modelling approaches and a parametric network-planning model for quality prediction in VoIP networks. Draws on innovative new research on the quality degradation characteristic of VoIP. Explains in detail how telephone speech quality can be greatly enhanced with VoIP’s wideband speech transmission capability. Assesses the vast collection of references into the technical and scientific literature related to VoIP quality. Illustrates concepts throughout with mathematical models, algorithms and simulations. Speech Quality of VoIP is the definitive guide for researchers, engineers and network planners working in the field of VoIP, Quality of Service, and speech communication processing in telecommunications. Advanced undergraduate and graduate students on telecommunication and networking courses will also find this text an invaluable resource.

Author : Alexander Raake
Publisher : Wiley-Blackwell
Page : 344 pages
File Size : 48,8 Mb
Release : 2006-10-16
Category : Computers
ISBN : UOM:39015064731923

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Speech Quality of VoIP by Alexander Raake Pdf

Finally a comprehensive overview of speech quality in VoIP from the user's perspective! Speech Quality of VoIP is an essential guide to assessing the speech quality of VoIP networks, whilst addressing the implications for the design of VoIP networks and systems. This book bridges the gap between the technical network-world and the psychoacoustic world of quality perception. Alexander Raake’s unique perspective combines awareness of the technical characteristics of VoIP networks and original research concerning the perception of speech transmitted across them. Starting from the network designer’s point of view, the different characteristics of the network are addressed, and then linked to features perceived by users. This book provides an overview of the available knowledge on the principal, relevant aspects of speech and speech quality perception, of speech quality assessment, and of transmission properties of telephone and VoIP networks, and of the related perceptual features and resulting speech quality. Discussing new research into the specific time-varying degradations VoIP brings along, but also the considerable potential of quality improvement to be achieved with wideband speech transmission, Alexander Raake demonstrates how network and service characteristics impact on the users perception of quality. Speech Quality of VoIP: Offers an insight into speech quality of VoIP from a user's perspective. Presents an overview of different modelling approaches and a parametric network-planning model for quality prediction in VoIP networks. Draws on innovative new research on the quality degradation characteristic of VoIP. Explains in detail how telephone speech quality can be greatly enhanced with VoIP’s wideband speech transmission capability. Assesses the vast collection of references into the technical and scientific literature related to VoIP quality. Illustrates concepts throughout with mathematical models, algorithms and simulations. Speech Quality of VoIP is the definitive guide for researchers, engineers and network planners working in the field of VoIP, Quality of Service, and speech communication processing in telecommunications. Advanced undergraduate and graduate students on telecommunication and networking courses will also find this text an invaluable resource.

Author : Shigeru Kashihara
Publisher : BoD – Books on Demand
Page : 350 pages
File Size : 53,9 Mb
Release : 2011-02-14
Category : Computers
ISBN : 9789533075495

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VoIP Technologies by Shigeru Kashihara Pdf

This book provides a collection of 15 excellent studies of Voice over IP (VoIP) technologies. While VoIP is undoubtedly a powerful and innovative communication tool for everyone, voice communication over the Internet is inherently less reliable than the public switched telephone network, because the Internet functions as a best-effort network without Quality of Service guarantee and voice data cannot be retransmitted. This book introduces research strategies that address various issues with the aim of enhancing VoIP quality. We hope that you will enjoy reading these diverse studies, and that the book will provide you with a lot of useful information about current VoIP technology research.

Author : Nicolas Côté
Publisher : Springer Science & Business Media
Page : 255 pages
File Size : 44,8 Mb
Release : 2011-05-06
Category : Technology & Engineering
ISBN : 9783642184635

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Integral and Diagnostic Intrusive Prediction of Speech Quality by Nicolas Côté Pdf

This work deals with the instrumental measurement methods for the perceived quality of transmitted speech. These measures simulate the speech perception process employed by human subjects during auditory experiments. The measure standardized by the International Telecommunication Union (ITU), called “Wideband-Perceptual Speech Quality Evaluation (WB-PESQ)”, is not able to quantify all these perceived characteristics on a unidimensional quality scale, the Mean Opinion Score (MOS) scale. Recent experimental studies showed that subjects make use of several perceptual dimensions to judge about the quality of speech signals. In order to represent the signal at a higher stage of perception, a new model, called “Diagnostic Instrumental Assessment of Listening quality (DIAL)”, has been developed. It includes a perceptual and a cognitive model which simulate the whole quality judgment process. Except for strong discontinuities, DIAL predicts very well speech quality of different speech processing and transmission systems, and it outperforms the WB-PESQ.

Author : Cranley, Nicola,Murphy, Liam
Publisher : IGI Global
Page : 544 pages
File Size : 43,6 Mb
Release : 2008-07-31
Category : Computers
ISBN : 9781599048239

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Handbook of Research on Wireless Multimedia: Quality of Service and Solutions by Cranley, Nicola,Murphy, Liam Pdf

"This book highlights and discusses the underlying QoS issues that arise in the delivery of real-time multimedia services over wireless networks"--Provided by publisher.

Author : Borworn Papasratorn,Nipon Charoenkitkarn,Kittichai Lavangnananda,Wichian Chutimaskul,Vajirasak Vanijja
Publisher : Springer
Page : 207 pages
File Size : 53,8 Mb
Release : 2013-02-01
Category : Computers
ISBN : 9783642350764

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Advances in Information Technology by Borworn Papasratorn,Nipon Charoenkitkarn,Kittichai Lavangnananda,Wichian Chutimaskul,Vajirasak Vanijja Pdf

This book constitutes the proceedings of the 5th International Conference on Advances in Information Technology, IAIT 2012, held in Bangkok, Thailand, in December 2012. The 18 revised papers presented in this volume were carefully reviewed and selected from 37 submissions. They deal with all areas related to applied information technology, such as e-service; information and communication technology; intelligent systems; information management; and platform technology.

Author : Syed A. Ahson,Mohammad Ilyas
Publisher : CRC Press
Page : 486 pages
File Size : 42,7 Mb
Release : 2018-10-08
Category : Technology & Engineering
ISBN : 9781351834681

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VoIP Handbook by Syed A. Ahson,Mohammad Ilyas Pdf

The number of worldwide VoIP customers is well over 38 million. Thanks to the popularity of inexpensive, high-quality services, it's projected to increase to nearly 250 million within the next three years. The VoIP Handbook: Applications, Technologies, Reliability, and Security captures the state of the art in VoIP technology and serves as the comprehensive reference on this soon-to-be ubiquitous technology. It provides: A step-by-step methodology to evaluate VoIP performance prior to network implementation An invaluable overview of implementation challenges and several VoIP multipoint conference systems Unparalleled coverage of design and engineering issues such VoIP traffic, QoS requirements, and VoIP flow As this promising technology’s popularity increases, new demands for improved quality, reduced cost, and seamless operation will continue to increase. Edited by preeminent wireless communications experts Ahson and Illyas, the VoIP Handbook guides you to successful deployment.

Author : Zheng-Hua Tan,Boerge Lindberg
Publisher : Springer Science & Business Media
Page : 408 pages
File Size : 53,5 Mb
Release : 2008-04-17
Category : Technology & Engineering
ISBN : 9781848001435

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Automatic Speech Recognition on Mobile Devices and over Communication Networks by Zheng-Hua Tan,Boerge Lindberg Pdf

The advances in computing and networking have sparked an enormous interest in deploying automatic speech recognition on mobile devices and over communication networks. This book brings together academic researchers and industrial practitioners to address the issues in this emerging realm and presents the reader with a comprehensive introduction to the subject of speech recognition in devices and networks. It covers network, distributed and embedded speech recognition systems.

Author : Sergey Andreev,Sergey Balandin,Yevgeni Koucheryavy
Publisher : Springer
Page : 478 pages
File Size : 47,9 Mb
Release : 2012-08-22
Category : Computers
ISBN : 9783642326868

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Internet of Things, Smart Spaces, and Next Generation Networking by Sergey Andreev,Sergey Balandin,Yevgeni Koucheryavy Pdf

This book constitutes the joint refereed proceedings of the 12 International Conference on Next Generation Teletraffic and Wired/Wireless Advanced Networking, NEW2AN, and the 5th Conference on Internet of Things and Smart Spaces, ruSMART 2012, held in St. Petersburg, Russia, in August 2012. The total of 42 papers was carefully reviewed and selected for inclusion in this book. The 14 papers selected from ruSMART are organized in topical sections named: defining an internet-of-things ecosystem; future services; and smart space governing through service mashups. The 28 papers from NEW2AN deal with the following topics: wireless cellular networks; ad-hoc, mesh, and delay-tolerant networks; scalability, cognition, and self-organization; traffic and internet applications; and wireless sensor networks. They also contain 4 selected papers from the NEW2AN 2012 winter session.

Author : Gillian M. Davis
Publisher : CRC Press
Page : 427 pages
File Size : 55,7 Mb
Release : 2018-10-03
Category : Technology & Engineering
ISBN : 9781420041262

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Noise Reduction in Speech Applications by Gillian M. Davis Pdf

Noise and distortion that degrade the quality of speech signals can come from any number of sources. The technology and techniques for dealing with noise are almost as numerous, but it is only recently, with the development of inexpensive digital signal processing hardware, that the implementation of the technology has become practical. Noise Reduction in Speech Applications provides a comprehensive introduction to modern techniques for removing or reducing background noise from a range of speech-related applications. Self-contained, it starts with a tutorial-style chapter of background material, then focuses on system aspects, digital algorithms, and implementation. The final section explores a variety of applications and demonstrates to potential users of the technology the results possible with the noise reduction techniques presented. The book offers chapters contributed by international experts, a practical, systems approach, and numerous references. For electrical, acoustics, signal processing, communications, and bioengineers, Noise Reduction in Speech Applications is a valuable resource that shows you how to decide whether noise reduction will solve problems in your own systems and how to make the best use of the technologies available.

Author : William C. Hardy
Publisher : McGraw Hill Professional
Page : 338 pages
File Size : 45,5 Mb
Release : 2003-02-07
Category : Technology & Engineering
ISBN : 9780071429153

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VoIP Service Quality by William C. Hardy Pdf

VoIP (Voice over Internet Protocol), the next big advance in telecom, has proven difficult to implement. This resource gives service and enterprise telecom managers all the data they need on measurements, tools, and utilities to build a Voice over IP service that works as well as the telephone. * Offers specific techniques for evaluating every factor that affects quality of service * Written in an easy-to-understand "plain English" style * Explains how to translate problems of quality into measurable cause and effect

Author : Sebastian Möller,Alexander Raake
Publisher : Springer
Page : 431 pages
File Size : 49,8 Mb
Release : 2014-07-08
Category : Technology & Engineering
ISBN : 9783319026817

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Quality of Experience by Sebastian Möller,Alexander Raake Pdf

This pioneering book develops definitions and concepts related to Quality of Experience in the context of multimedia- and telecommunications-related applications, systems and services and applies these to various fields of communication and media technologies. The editors bring together numerous key-protagonists of the new discipline “Quality of Experience” and combine the state-of-the-art knowledge in one single volume.

Author : Jacob Benesty,M. M. Sondhi,Yiteng Huang
Publisher : Springer Science & Business Media
Page : 1170 pages
File Size : 47,7 Mb
Release : 2007-11-28
Category : Technology & Engineering
ISBN : 9783540491255

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Springer Handbook of Speech Processing by Jacob Benesty,M. M. Sondhi,Yiteng Huang Pdf

This handbook plays a fundamental role in sustainable progress in speech research and development. With an accessible format and with accompanying DVD-Rom, it targets three categories of readers: graduate students, professors and active researchers in academia, and engineers in industry who need to understand or implement some specific algorithms for their speech-related products. It is a superb source of application-oriented, authoritative and comprehensive information about these technologies, this work combines the established knowledge derived from research in such fast evolving disciplines as Signal Processing and Communications, Acoustics, Computer Science and Linguistics.

Author : Paul Dowland,Steven Furnell
Publisher : Lulu.com
Page : 287 pages
File Size : 41,6 Mb
Release : 2024-06-29
Category : Electronic
ISBN : 9781841022833

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Advances in Communications, Computing, Networks and Security Volume 7 by Paul Dowland,Steven Furnell Pdf

Author : Josep Solé-Pareta,Michael Smirnov,Piet Van Mieghem,Jordi Domingo-Pascual,Edmundo Monteiro,Peter Reichl,Burkhard Stiller,Richard J. Gibbens
Publisher : Springer
Page : 390 pages
File Size : 44,9 Mb
Release : 2004-09-24
Category : Computers
ISBN : 9783540301936

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Quality of Service in the Emerging Networking Panorama by Josep Solé-Pareta,Michael Smirnov,Piet Van Mieghem,Jordi Domingo-Pascual,Edmundo Monteiro,Peter Reichl,Burkhard Stiller,Richard J. Gibbens Pdf

This book constitutes the joint refereed proceedings of the 5th International Workshop on Quality of Future Internet Services, QofIS 2004, the First International Workshop on Qos Routing, WOoSR 2004, and the 4th International Workshop on Internet Charging and Qos Technology, ICQT 2004, held in Barcelona, Spain, in September/October 2004. The 38 revised full papers presented were carefully reviewed and selected from a total of around 140 submissions. The papers are organized in topical sections on Internet applications, local area and ad-hoc wireless networks, service differentiation and congestion control, traffic engineering and routing, enforcing mobility, algorithms and scalability for service routing, novel ideas and protocol enhancements, auctions and game theory, charging in mobile networks, and QoS provisioning and monitoring.