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Home > Technology > Electronics > Audio Bandwidth Extension: Application of Psychoacoustics, Signal Processing and Loudspeaker Design-eBook

Audio Bandwidth Extension: Application of Psychoacoustics, Signal Processing and Loudspeaker Design

Larsen, Erik R., Aarts, Ronald M.

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Audio Bandwidth Extension: Application of Psychoacoustics, Signal Processing and Loudspeaker Design

"Bandwidth extension (BWE) refers to various methods that increase either the perceived or real frequency spectrum (bandwidth) of audio signals. Such frequency extension is desirable if at some point the frequency content of the audio signal has been reduced, as can happen for example during recording, transmission or reproduction.

This volume, significant in dealing exclusively with BWE, discusses applications to music and speech and places particular emphasis on signal processing techniques.

Presents an all-encompassing approach to BWE by covering theory, applications and algorithms
Reviews important concepts in psychoacoustics, signal processing and loudspeaker theory
Develops the theory and implementation of BWE applied to low-frequency sound reproduction, perceptually coded audio, speech and noise abatement
Includes a BWE patent overview

Audio Bandwidth Extension pulls together recent developments in to a single volume and presents a coherent framework to the reader. Such an approach will have instant appeal to engineers, specialists, researchers and postgraduate students in the fields of audio, signal processing and speech. "

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Title of ebook: Audio Bandwidth Extension: Application of Psychoacoustics, Signal Processing and Loudspeaker Design
ISBN: 9780470858653
Publisher: John Wiley & Sons, Inc.
Internet download file size: 3568 kb
Released online for download: 04-08-2005
Author of eBook: Larsen, Erik R.
Author of eBook: Aarts, Ronald M.

Chapter One

From Physics to Psychophysics

This first chapter does not present new material, but rather presents some backgrounds for the various BWE topics. The selection of the material to be included in this chapter is mainly motivated by what is considered to be a useful reference if unfamiliar concepts are encountered in later chapters. To keep this backgrounds section concise, it will not always contain all desired information, but references are provided for further reading (as is done throughout the remainder of the book).

The topics covered in this chapter are basics in signal processing in Sec. 1.1, statistics of speech and music in Sec. 1.2, acoustics (mainly concerning loudspeakers) in Sec. 1.3, and auditory perception in Sec. 1.4.

1.1 SIGNAL THEORY

This section reviews some preliminaries for digital sig ... read full excerpt from Audio Bandwidth Extension: Application of Psychoacoustics, Signal Processing and Loudspeaker Design ebook


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