Venkatraman Atti's Books

Audio Signal Processing and Coding

By: Andreas Spanias,Ted Painter,Venkatraman Atti

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Audio Signal Processing and Coding

By: Andreas Spanias,Ted Painter,Venkatraman Atti

An in-depth treatment of algorithms and standards for perceptual coding of high-fidelity audio, this self-contained reference surveys and addresses all aspects of the field. Coverage includes signal processing and perceptual (psychoacoustic) fundamentals, details on relevant research and signal models, details on standardization and applications, and details on performance measures and perceptual measurement systems. It includes a comprehensive bibliography with over 600 references, computer exercises, and MATLAB-based projects for use in EE multimedia, computer science, and DSP courses. An ftp site containing supplementary material such as wave files, MATLAB programs and workspaces for the students to solve some of the numerical problems and computer exercises in the book can be found at ftp://ftp.wiley.com/public/sci_tech_med/audio_signal

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544

Publisher

John Wiley & Sons

Published Date

ISBN 10

047004196X

ISBN 13

9780470041963

Algorithms and Software for Predictive and Perceptual Modeling of Speech

By: Venkatraman Atti

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Algorithms and Software for Predictive and Perceptual Modeling of Speech

By: Venkatraman Atti

From the early pulse code modulation-based coders to some of the recent multi-rate wideband speech coding standards, the area of speech coding made several significant strides with an objective to attain high quality of speech at the lowest possible bit rate. This book presents some of the recent advances in linear prediction (LP)-based speech analysis that employ perceptual models for narrow- and wide-band speech coding. The LP analysis-synthesis framework has been successful for speech coding because it fits well the source-system paradigm for speech synthesis. Limitations associated with the conventional LP have been studied extensively, and several extensions to LP-based analysis-synthesis have been proposed, e.g., the discrete all-pole modeling, the perceptual LP, the warped LP, the LP with modified filter structures, the IIR-based pure LP, all-pole modeling using the weighted-sum of LSP polynomials, the LP for low frequency emphasis, and the cascade-form LP. These extensions can be classified as algorithms that either attempt to improve the LP spectral envelope fitting performance or embed perceptual models in the LP. The first half of the book reviews some of the recent developments in predictive modeling of speech with the help of MatlabTM Simulation examples. Advantages of integrating perceptual models in low bit rate speech coding depend on the accuracy of these models to mimic the human performance and, more importantly, on the achievable "coding gains" and "computational overhead" associated with these physiological models. Methods that exploit the masking properties of the human ear in speech coding standards, even today, are largely based on concepts introduced by Schroeder and Atal in 1979. For example, a simple approach employed in speech coding standards is to use a perceptual weighting filter to shape the quantization noise according to the masking properties of the human ear. The second half of the book reviews some of the recent developments in perceptual modeling of speech (e.g., masking threshold, psychoacoustic models, auditory excitation pattern, and loudness) with the help of MatlabTM simulations. Supplementary material including MatlabTM programs and simulation examples presented in this book can also be accessed here. Table of Contents: Introduction / Predictive Modeling of Speech / Perceptual Modeling of Speech

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113

Publisher

Springer Nature

Published Date

ISBN 10

3031015169

ISBN 13

9783031015168

How the World Changed Social Media

By: Daniel Miller,Elisabetta Costa,Nell Haynes,Tom McDonald,Razvan Nicolescu,Jolynna Sinanan,Juliano Spyer,Shriram Venkatraman,Xinyuan Wang

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How the World Changed Social Media

By: Daniel Miller,Elisabetta Costa,Nell Haynes,Tom McDonald,Razvan Nicolescu,Jolynna Sinanan,Juliano Spyer,Shriram Venkatraman,Xinyuan Wang

How the World Changed Social Media is the first book in Why We Post, a book series that investigates the findings of anthropologists who each spent 15 months living in communities across the world. This book offers a comparative analysis summarising the results of the research and explores the impact of social media on politics and gender, education and commerce. What is the result of the increased emphasis on visual communication? Are we becoming more individual or more social? Why is public social media so conservative? Why does equality online fail to shift inequality offline? How did memes become the moral police of the internet? Supported by an introduction to the project’s academic framework and theoretical terms that help to account for the findings, the book argues that the only way to appreciate and understand something as intimate and ubiquitous as social media is to be immersed in the lives of the people who post. Only then can we discover how people all around the world have already transformed social media in such unexpected ways and assess the consequences

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Page Count

288

Publisher

UCL Press

Published Date

ISBN 10

1910634484

ISBN 13

9781910634486

Audio Signal Processing and Coding

By: Andreas Spanias,Ted Painter,Venkatraman Atti

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Audio Signal Processing and Coding

By: Andreas Spanias,Ted Painter,Venkatraman Atti

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Solve jigsaw puzzle

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Page Count

544

Publisher

John Wiley & Sons

Published Date

ISBN 10

047004196X

ISBN 13

9780470041963

Algorithms and Software for Predictive and Perceptual Modeling of Speech

By: Venkatraman Atti

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Algorithms and Software for Predictive and Perceptual Modeling of Speech

By: Venkatraman Atti

Average ratings

N/A

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Solve jigsaw puzzle

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Page Count

113

Publisher

Springer Nature

Published Date

ISBN 10

3031015169

ISBN 13

9783031015168

Book's by Venkatraman Atti

Audio Signal Processing and Coding

Audio Signal Processing and Coding

Algorithms and Software for Predictive and Perceptual Modeling of Speech

Algorithms and Software for Predictive and Perceptual Modeling of Speech

How the World Changed Social Media

How the World Changed Social Media

Audio Signal Processing and Coding

Audio Signal Processing and Coding

Algorithms and Software for Predictive and Perceptual Modeling of Speech

Algorithms and Software for Predictive and Perceptual Modeling of Speech

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