Digital Speech Transmission And Enhancement

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Digital Speech Transmission and Enhancement

Peter Vary,Rainer Martin
Digital Speech Transmission and Enhancement Book PDF

Author : Peter Vary,Rainer Martin
Publisher : John Wiley & Sons
Page : 596 pages
File Size : 41,8 Mb
Release : 2023-11-23
Category : Technology & Engineering
ISBN : 9781119060987

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Digital Speech Transmission and Enhancement by Peter Vary,Rainer Martin Pdf

DIGITAL SPEECH TRANSMISSION AND ENHANCEMENT Enables readers to understand the latest developments in speech enhancement/transmission due to advances in computational power and device miniaturization The Second Edition of Digital Speech Transmission and Enhancement has been updated throughout to provide all the necessary details on the latest advances in the theory and practice in speech signal processing and its applications, including many new research results, standards, algorithms, and developments which have recently appeared and are on their way into state-of-the-art applications. Besides mobile communications, which constituted the main application domain of the first edition, speech enhancement for hearing instruments and man-machine interfaces has gained significantly more prominence in the past decade, and as such receives greater focus in this updated and expanded second edition. Readers can expect to find information and novel methods on: Low-latency spectral analysis-synthesis, single-channel and dual-channel algorithms for noise reduction and dereverberation Multi-microphone processing methods, which are now widely used in applications such as mobile phones, hearing aids, and man-computer interfaces Algorithms for near-end listening enhancement, which provide a significantly increased speech intelligibility for users at the noisy receiving side of their mobile phone Fundamentals of speech signal processing, estimation and machine learning, speech coding, error concealment by soft decoding, and artificial bandwidth extension of speech signals Digital Speech Transmission and Enhancement is a single-source, comprehensive guide to the fundamental issues, algorithms, standards, and trends in speech signal processing and speech communication technology, and as such is an invaluable resource for engineers, researchers, academics, and graduate students in the areas of communications, electrical engineering, and information technology.

Digital Speech Transmission

Peter Vary,Rainer Martin
Digital Speech Transmission Book PDF

Author : Peter Vary,Rainer Martin
Publisher : John Wiley & Sons
Page : 644 pages
File Size : 51,9 Mb
Release : 2006-08-04
Category : Science
ISBN : 9780470031759

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Digital Speech Transmission by Peter Vary,Rainer Martin Pdf

The enormous advances in digital signal processing (DSP) technology have contributed to the wide dissemination and success of speech communication devices – be it GSM and UMTS mobile telephones, digital hearing aids, or human-machine interfaces. Digital speech transmission techniques play an important role in these applications, all the more because high quality speech transmission remains essential in all current and next generation communication networks. Enhancement, coding and error concealment techniques improve the transmitted speech signal at all stages of the transmission chain, from the acoustic front-end to the sound reproduction at the receiver. Advanced speech processing algorithms help to mitigate a number of physical and technological limitations such as background noise, bandwidth restrictions, shortage of radio frequencies, and transmission errors. Digital Speech Transmission provides a single-source, comprehensive guide to the fundamental issues, algorithms, standards, and trends in speech signal processing and speech communication technology. The authors give a solid, accessible overview of fundamentals of speech signal processing speech coding, including new speech coders for GSM and UMTS error concealment by soft decoding artificial bandwidth extension of speech signals single and multi-channel noise reduction acoustic echo cancellation This text is an invaluable resource for engineers, researchers, academics, and graduate students in the areas of communications, electrical engineering, and information technology.

Advances in Digital Speech Transmission

Prof Rainer Martin,Prof Ulrich Heute,Prof Christiane Antweiler
Advances in Digital Speech Transmission Book PDF

Author : Prof Rainer Martin,Prof Ulrich Heute,Prof Christiane Antweiler
Publisher : John Wiley & Sons
Page : 572 pages
File Size : 46,8 Mb
Release : 2008-02-28
Category : Technology & Engineering
ISBN : 0470727179

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Advances in Digital Speech Transmission by Prof Rainer Martin,Prof Ulrich Heute,Prof Christiane Antweiler Pdf

Speech processing and speech transmission technology are expanding fields of active research. New challenges arise from the 'anywhere, anytime' paradigm of mobile communications, the ubiquitous use of voice communication systems in noisy environments and the convergence of communication networks toward Internet based transmission protocols, such as Voice over IP. As a consequence, new speech coding, new enhancement and error concealment, and new quality assessment methods are emerging. Advances in Digital Speech Transmission provides an up-to-date overview of the field, including topics such as speech coding in heterogeneous communication networks, wideband coding, and the quality assessment of wideband speech. Provides an insight into the latest developments in speech processing and speech transmission, making it an essential reference to those working in these fields Offers a balanced overview of technology and applications Discusses topics such as speech coding in heterogeneous communications networks, wideband coding, and the quality assessment of the wideband speech Explains speech signal processing in hearing instruments and man-machine interfaces from applications point of view Covers speech coding for Voice over IP, blind source separation, digital hearing aids and speech processing for automatic speech recognition Advances in Digital Speech Transmission serves as an essential link between the basics and the type of technology and applications (prospective) engineers work on in industry labs and academia. The book will also be of interest to advanced students, researchers, and other professionals who need to brush up their knowledge in this field.

Digital Speech Transmission and Enhancement

Peter Vary,Rainer Martin
Digital Speech Transmission and Enhancement Book PDF

Author : Peter Vary,Rainer Martin
Publisher : John Wiley & Sons
Page : 596 pages
File Size : 54,7 Mb
Release : 2024-01-23
Category : Technology & Engineering
ISBN : 9781119060963

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Digital Speech Transmission and Enhancement by Peter Vary,Rainer Martin Pdf

Enables readers to understand the latest developments in speech enhancement/transmission due to advances in computational power and device miniaturization The Second Edition of Digital Speech Transmission and Enhancement has been updated throughout to provide all the necessary details on the latest advances in the theory and practice in speech signal processing and its applications, including many new research results, standards, algorithms, and developments which have recently appeared and are on their way into state-of-the-art applications. Besides mobile communications, which constituted the main application domain of the first edition, speech enhancement for hearing instruments and man-machine interfaces has gained significantly more prominence in the past decade, and as such receives greater focus in this updated and expanded 2nd edition. In the Second Edition of Digital Speech Transmission and Enhancement, readers can expect to find information and novel methods on: Low-latency spectral analysis-synthesis, single-channel and dual-channel algorithms for noise reduction and dereverberation. Multi-microphone processing methods, which are now widely used in applications such as mobile phones, hearing aids, and man-computer interfaces. Algorithms for near-end listening enhancement, which provide a significantly increased speech intelligibility for users at the noisy receiving side of their mobile phone. Fundamentals of speech signal processing, estimation and machine learning, speech coding, error concealment by soft decoding, and artificial bandwidth extension of speech signals Digital Speech Transmission and Enhancement is a single-source, comprehensive guide to the fundamental issues, algorithms, standards, and trends in speech signal processing and speech communication technology, and as such is an invaluable resource for engineers, researchers, academics, and graduate students in the areas of communications, electrical engineering, and information technology.

Digital Speech Processing

A. Nejat Ince
Digital Speech Processing Book PDF

Author : A. Nejat Ince
Publisher : Springer Science & Business Media
Page : 254 pages
File Size : 51,7 Mb
Release : 2013-03-09
Category : Technology & Engineering
ISBN : 9781475721485

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Digital Speech Processing by A. Nejat Ince Pdf

After alm ost three scores of years of basic and applied research, the field of speech processing is, at present, undergoing a rapid growth in terms of both performance and applications and this is fueHed by the advances being made in the areas of microelectronics, computation and algorithm design.Speech processing relates to three aspects of voice communications: -Speech Coding and transmission which is mainly concerned with man-to man voice communication. -Speech Synthesis which deals with machine-to-man communication. -Speech Recognition which is related to man-to-machine communication. Widespread application and use of low-bit rate voice codec.>, synthesizers and recognizers which are all speech processing products requires ideaHy internationally accepted quality assessment and evaluation methods as weH as speech processing standards so that they may be interconnected and used independently of their designers and manufacturers without costly interfaces. This book presents, in a tutorial manner, both fundamental and applied aspects of the above topics which have been prepared by weH-known specialists in their respective areas. The book is based on lectures which were sponsored by AGARD/NATO and delivered by the authors, in several NATO countries, to audiences consisting mainly of academic and industrial R&D engineers and physicists as weH as civil and military C3I systems planners and designers.

Digital Speech

A. M. Kondoz
Digital Speech Book PDF

Author : A. M. Kondoz
Publisher : John Wiley & Sons
Page : 458 pages
File Size : 43,8 Mb
Release : 2005-06-14
Category : Technology & Engineering
ISBN : 9780470870099

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Digital Speech by A. M. Kondoz Pdf

Building on the success of the first edition Digital Speech offers extensive new, updated and revised material based upon the latest research. This Second Edition continues to provide the fundamental technical background required for low bit rate speech coding and the hottest developments in digital speech coding techniques that are applicable to evolving communication systems. Features new chapters on Pitch Estimation and Voice-Unvoiced Classification of Speech, Harmonic Speech Coding and Multimode Speech Coding Presents a comprehensively revised chapter entitled Analysis by Synthesis LPC Coding including specific examples of popular speech coders such as CELP (Code-Excited Linear Predictive) Coding Contains an updated chapter on Efficient LPC Quantization Methods including MSVQ and anti-aliasing filtering Discusses Voice Activity Detection (VAD) methods Offers expanded coverage of speech enhancement techniques such as echo cancellation and noise suppression Written by a well-known, highly respected academic, this authoritative volume will be invaluable to practising engineers, network designers, computer scientists and advanced students in communications, electrical and electronic engineering.

Speech Enhancement Techniques for Digital Hearing Aids

Komal R. Borisagar,Rohit M. Thanki,Bhavin S. Sedani
Speech Enhancement Techniques for Digital Hearing Aids Book PDF

Author : Komal R. Borisagar,Rohit M. Thanki,Bhavin S. Sedani
Publisher : Springer
Page : 155 pages
File Size : 44,5 Mb
Release : 2018-11-15
Category : Technology & Engineering
ISBN : 9783319968216

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Speech Enhancement Techniques for Digital Hearing Aids by Komal R. Borisagar,Rohit M. Thanki,Bhavin S. Sedani Pdf

​This book provides various speech enhancement algorithms for digital hearing aids. It covers information on noise signals extracted from silences of speech signal. The description of the algorithm used for this purpose is also provided. Different types of adaptive filters such as Least Mean Squares (LMS), Normalized LMS (NLMS) and Recursive Lease Squares (RLS) are described for noise reduction in the speech signals. Different types of noises are taken to generate noisy speech signals, and therefore information on various noises signals is provided. The comparative performance of various adaptive filters for noise reduction in speech signals is also described. In addition, the book provides a speech enhancement technique using adaptive filtering and necessary frequency strength enhancement using wavelet transform as per the requirement of audiogram for digital hearing aids. Presents speech enhancement techniques for improving performance of digital hearing aids; Covers various types of adaptive filters and their advantages and limitations; Provides a hybrid speech enhancement technique using wavelet transform and adaptive filters.

Digital Speech, 2Nd Ed

Kondoz
Digital Speech 2Nd Ed Book PDF

Author : Kondoz
Publisher : John Wiley & Sons
Page : 464 pages
File Size : 41,6 Mb
Release : 2007-08-31
Category : Electronic
ISBN : 812651390X

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Digital Speech, 2Nd Ed by Kondoz Pdf

This edition provides the fundamental technical background required for low bit rate speech coding and developments in digital speech coding techniques that are applicable to evolving communication systems. Chapters on Pitch Estimation and Voice-Unvoiced Classification of Speech, Harmonic Speech Coding and Multimode Speech Coding, are featured. It also offers expanded coverage of speech enhancement techniques such as echo cancellation and noise suppression. · Introduction · Coding Strategies and Standards · Sampling and Quantization · Speech Signal Analysis and Modelling · Efficient LPC Quantization Methods · Pitch Estimation and Voiced-Unvoiced Classification of Speech · Analysis by Synthesis LPC Coding · Harmonic Speech Coding · Multimode Speech Coding · Voice Activity Detection · Speech Enhancement

Speech Enhancement

Philipos C. Loizou
Speech Enhancement Book PDF

Author : Philipos C. Loizou
Publisher : CRC Press
Page : 715 pages
File Size : 49,7 Mb
Release : 2013-02-25
Category : Technology & Engineering
ISBN : 9781466504219

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Speech Enhancement by Philipos C. Loizou Pdf

With the proliferation of mobile devices and hearing devices, including hearing aids and cochlear implants, there is a growing and pressing need to design algorithms that can improve speech intelligibility without sacrificing quality. Responding to this need, Speech Enhancement: Theory and Practice, Second Edition introduces readers to the basic problems of speech enhancement and the various algorithms proposed to solve these problems. Updated and expanded, this second edition of the bestselling textbook broadens its scope to include evaluation measures and enhancement algorithms aimed at improving speech intelligibility. Fundamentals, Algorithms, Evaluation, and Future Steps Organized into four parts, the book begins with a review of the fundamentals needed to understand and design better speech enhancement algorithms. The second part describes all the major enhancement algorithms and, because these require an estimate of the noise spectrum, also covers noise estimation algorithms. The third part of the book looks at the measures used to assess the performance, in terms of speech quality and intelligibility, of speech enhancement methods. It also evaluates and compares several of the algorithms. The fourth part presents binary mask algorithms for improving speech intelligibility under ideal conditions. In addition, it suggests steps that can be taken to realize the full potential of these algorithms under realistic conditions. What’s New in This Edition Updates in every chapter A new chapter on objective speech intelligibility measures A new chapter on algorithms for improving speech intelligibility Real-world noise recordings (on accompanying CD) MATLAB® code for the implementation of intelligibility measures (on accompanying CD) MATLAB and C/C++ code for the implementation of algorithms to improve speech intelligibility (on accompanying CD) Valuable Insights from a Pioneer in Speech Enhancement Clear and concise, this book explores how human listeners compensate for acoustic noise in noisy environments. Written by a pioneer in speech enhancement and noise reduction in cochlear implants, it is an essential resource for anyone who wants to implement or incorporate the latest speech enhancement algorithms to improve the quality and intelligibility of speech degraded by noise. Includes a CD with Code and Recordings The accompanying CD provides MATLAB implementations of representative speech enhancement algorithms as well as speech and noise databases for the evaluation of enhancement algorithms.

Introduction to Digital Speech Processing

Lawrence R. Rabiner,Ronald W. Schafer
Introduction to Digital Speech Processing Book PDF

Author : Lawrence R. Rabiner,Ronald W. Schafer
Publisher : Now Publishers Inc
Page : 212 pages
File Size : 48,9 Mb
Release : 2007
Category : Computers
ISBN : 9781601980700

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Introduction to Digital Speech Processing by Lawrence R. Rabiner,Ronald W. Schafer Pdf

Provides the reader with a practical introduction to the wide range of important concepts that comprise the field of digital speech processing. Students of speech research and researchers working in the field can use this as a reference guide.

Speech Enhancement

Philipos C. Loizou
Speech Enhancement Book PDF

Author : Philipos C. Loizou
Publisher : CRC Press
Page : 711 pages
File Size : 42,5 Mb
Release : 2013-02-25
Category : Technology & Engineering
ISBN : 9781466504226

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Speech Enhancement by Philipos C. Loizou Pdf

With the proliferation of mobile devices and hearing devices, including hearing aids and cochlear implants, there is a growing and pressing need to design algorithms that can improve speech intelligibility without sacrificing quality. Responding to this need, Speech Enhancement: Theory and Practice, Second Edition introduces readers to the basic pr

A Perspective on Single-Channel Frequency-Domain Speech Enhancement

Jacob Benesty,Yiteng Huang
A Perspective on Single Channel Frequency Domain Speech Enhancement Book PDF

Author : Jacob Benesty,Yiteng Huang
Publisher : Springer Nature
Page : 101 pages
File Size : 48,9 Mb
Release : 2022-05-31
Category : Technology & Engineering
ISBN : 9783031025617

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A Perspective on Single-Channel Frequency-Domain Speech Enhancement by Jacob Benesty,Yiteng Huang Pdf

This book focuses on a class of single-channel noise reduction methods that are performed in the frequency domain via the short-time Fourier transform (STFT). The simplicity and relative effectiveness of this class of approaches make them the dominant choice in practical systems. Even though many popular algorithms have been proposed through more than four decades of continuous research, there are a number of critical areas where our understanding and capabilities still remain quite rudimentary, especially with respect to the relationship between noise reduction and speech distortion. All existing frequency-domain algorithms, no matter how they are developed, have one feature in common: the solution is eventually expressed as a gain function applied to the STFT of the noisy signal only in the current frame. As a result, the narrowband signal-to-noise ratio (SNR) cannot be improved, and any gains achieved in noise reduction on the fullband basis come with a price to pay, which is speech distortion. In this book, we present a new perspective on the problem by exploiting the difference between speech and typical noise in circularity and interframe self-correlation, which were ignored in the past. By gathering the STFT of the microphone signal of the current frame, its complex conjugate, and the STFTs in the previous frames, we construct several new, multiple-observation signal models similar to a microphone array system: there are multiple noisy speech observations, and their speech components are correlated but not completely coherent while their noise components are presumably uncorrelated. Therefore, the multichannel Wiener filter and the minimum variance distortionless response (MVDR) filter that were usually associated with microphone arrays will be developed for single-channel noise reduction in this book. This might instigate a paradigm shift geared toward speech distortionless noise reduction techniques. Table of Contents: Introduction / Problem Formulation / Performance Measures / Linear and Widely Linear Models / Optimal Filters with Model 1 / Optimal Filters with Model 2 / Optimal Filters with Model 3 / Optimal Filters with Model 4 / Experimental Study

Speech Enhancement in the STFT Domain

Jacob Benesty,Jingdong Chen,Emanuël A.P. Habets
Speech Enhancement in the STFT Domain Book PDF

Author : Jacob Benesty,Jingdong Chen,Emanuël A.P. Habets
Publisher : Springer Science & Business Media
Page : 112 pages
File Size : 41,8 Mb
Release : 2011-09-18
Category : Technology & Engineering
ISBN : 9783642232503

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Speech Enhancement in the STFT Domain by Jacob Benesty,Jingdong Chen,Emanuël A.P. Habets Pdf

This work addresses this problem in the short-time Fourier transform (STFT) domain. We divide the general problem into five basic categories depending on the number of microphones being used and whether the interframe or interband correlation is considered. The first category deals with the single-channel problem where STFT coefficients at different frames and frequency bands are assumed to be independent. In this case, the noise reduction filter in each frequency band is basically a real gain. Since a gain does not improve the signal-to-noise ratio (SNR) for any given subband and frame, the noise reduction is basically achieved by liftering the subbands and frames that are less noisy while weighing down on those that are more noisy. The second category also concerns the single-channel problem. The difference is that now the interframe correlation is taken into account and a filter is applied in each subband instead of just a gain. The advantage of using the interframe correlation is that we can improve not only the long-time fullband SNR, but the frame-wise subband SNR as well. The third and fourth classes discuss the problem of multichannel noise reduction in the STFT domain with and without interframe correlation, respectively. In the last category, we consider the interband correlation in the design of the noise reduction filters. We illustrate the basic principle for the single-channel case as an example, while this concept can be generalized to other scenarios. In all categories, we propose different optimization cost functions from which we derive the optimal filters and we also define the performance measures that help analyzing them.

Speech Enhancement in the Karhunen-Loeve Expansion Domain

Jacob Benesty,Jingdong Chen,Yiteng Huang
Speech Enhancement in the Karhunen Loeve Expansion Domain Book PDF

Author : Jacob Benesty,Jingdong Chen,Yiteng Huang
Publisher : Springer Nature
Page : 102 pages
File Size : 52,9 Mb
Release : 2022-05-31
Category : Technology & Engineering
ISBN : 9783031025600

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Speech Enhancement in the Karhunen-Loeve Expansion Domain by Jacob Benesty,Jingdong Chen,Yiteng Huang Pdf

This book is devoted to the study of the problem of speech enhancement whose objective is the recovery of a signal of interest (i.e., speech) from noisy observations. Typically, the recovery process is accomplished by passing the noisy observations through a linear filter (or a linear transformation). Since both the desired speech and undesired noise are filtered at the same time, the most critical issue of speech enhancement resides in how to design a proper optimal filter that can fully take advantage of the difference between the speech and noise statistics to mitigate the noise effect as much as possible while maintaining the speech perception identical to its original form. The optimal filters can be designed either in the time domain or in a transform space. As the title indicates, this book will focus on developing and analyzing optimal filters in the Karhunen-Loève expansion (KLE) domain. We begin by describing the basic problem of speech enhancement and the fundamental principles to solve it in the time domain. We then explain how the problem can be equivalently formulated in the KLE domain. Next, we divide the general problem in the KLE domain into four groups, depending on whether interframe and interband information is accounted for, leading to four linear models for speech enhancement in the KLE domain. For each model, we introduce signal processing measures to quantify the performance of speech enhancement, discuss the formation of different cost functions, and address the optimization of these cost functions for the derivation of different optimal filters. Both theoretical analysis and experiments will be provided to study the performance of these filters and the links between the KLE-domain and time-domain optimal filters will be examined. Table of Contents: Introduction / Problem Formulation / Optimal Filters in the Time Domain / Linear Models for Signal Enhancement in the KLE Domain / Optimal Filters in the KLE Domain with Model 1 / Optimal Filters in the KLE Domain with Model 2 / Optimal Filters in the KLE Domain with Model 3 / Optimal Filters in the KLE Domain with Model 4 / Experimental Study

Speech and Audio Processing for Coding, Enhancement and Recognition

Tokunbo Ogunfunmi,Roberto Togneri,Madihally Sim Narasimha
Speech and Audio Processing for Coding Enhancement and Recognition Book PDF

Author : Tokunbo Ogunfunmi,Roberto Togneri,Madihally Sim Narasimha
Publisher : Springer
Page : 345 pages
File Size : 51,7 Mb
Release : 2014-10-15
Category : Technology & Engineering
ISBN : 149391457X

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Speech and Audio Processing for Coding, Enhancement and Recognition by Tokunbo Ogunfunmi,Roberto Togneri,Madihally Sim Narasimha Pdf

This book describes the basic principles underlying the generation, coding, transmission and enhancement of speech and audio signals, including advanced statistical and machine learning techniques for speech and speaker recognition with an overview of the key innovations in these areas. Key research undertaken in speech coding, speech enhancement, speech recognition, emotion recognition and speaker diarization are also presented, along with recent advances and new paradigms in these areas.