A Practical Handbook of Speech Coders: 1st Edition (Hardback) book cover

A Practical Handbook of Speech Coders

1st Edition

By Randy Goldberg, Lance Riek

CRC Press

256 pages

Purchasing Options:$ = USD
Hardback: 9780849385254
pub: 2000-04-21
$185.00
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Description

The demand for digital speech coding algorithms grows every day, fueled by applications such as streaming speech over the Internet, Internet telephone, digital cellular telephony, wireless teleconferencing, and various multimedia applications. Until now, most of the books available on audio coding have been collections of individually authored papers. Others have discussed the fundamental coders, but neglected many of the innovations currently in use. Unlike these books, A Practical Handbook of Speech Coders offers in-depth treatment of the basics of speech coding plus the innovations to the basic methods that make the coders useful and efficient.

The authors designed this work for engineers, scientists, and manager who need to understand the emerging speech coding techniques and telecommunication standards. However, it will prove useful to people at all levels of speech coder experience:

  • If you want to simply download the code for an existing algorithm, this book helps you evaluate the strengths and weaknesses of all publicly available codes and choose the right one, then points you to the Internet location where the code is available for download.

  • For experts who want to improve on existing coders, this book provides the parameters of current coders and the techniques to improve upon them. You can download an existing algorithm or code it using the algorithmic descriptions in the book, make your innovations, and then test the code with the procedures given.

  • If you want to become an expert and have some basic knowledge of digital signal processing, you can learn the innovative steps taken by the inventor of each coder, explore the rigorous research techniques needed to develop your own coder, and become proficient in existing vocoder technology.
  • Table of Contents

    INTRODUCTION

    SPEECH PRODUCTION

    The Speech Chain

    Articulation

    Source-Filter Model

    SPEECH ANALYSIS TECHNIQUES

    Sampling and the Speech Waveform

    Systems and Filtering

    z Transform

    Fourier Transform

    Discrete Fourier Transform

    Windowing Signal Segments

    LINEAR PREDICTION VOCAL TRACT MODELING

    Sound Propagation in the Vocal Tract

    Estimation of LP Parameters

    Transformations of LP Parameters for Quantization

    Examples of LP Modeling

    PITCH EXTRACTION

    Autocorrelation Pitch Extraction

    Cepstral Pitch Extraction

    Frequency-Domain Error Minimization

    Pitch Tracking

    AUDITORY INFORMATION PROCESSING

    The Basilar Membrane: A Spectrum Analyzer

    Critical Bands

    Thresholds of Audibility and Detectability

    Monaural Masking

    QUANTIZATION AND WAVEFORM CODERS

    Uniform Quantization

    Nonlinear Quantization

    Adaptive Quantization

    Vector Quantization

    QUALITY EVALUATION

    Objective Measures

    Subjective Measures

    Perceptual Objective Measures

    VOICE CODING CONCEPTS

    Channel Vocoder

    Formant Vocoders

    The Sinusoidal Speech Coder

    Linear Prediction Vocoder

    LINEAR PREDICTION ANALYSIS BY SYNTHESIS

    Analysis by Synthesis Estimation of Excitation

    Multi-Pulse Linear Prediction Coder

    Regular Pulse Excited LP Coder

    Code Excited Linear Prediction Coder

    MIXED EXCITATION CODING

    Multi-Band Excitation Vocoder

    Mixed Excitation Linear Prediction Coder

    Split Band LPC Coder

    Harmonic Vector Excitation Coder

    Waveform Interpolation Coding

    PERCEPTUAL SPEECH CODING

    Auditory Processing of Speech

    Perceptual Coding Considerations

    Research in Perceptual Speech Coding

    APPENDIX: RELATED INTERNET SITES

    About the Authors/Editor

    Goldberg\, Randy; Riek\, Lance

    About the Series

    Discrete Mathematics and Its Applications

    Learn more…

    Subject Categories

    BISAC Subject Codes/Headings:
    MAT000000
    MATHEMATICS / General
    TEC007000
    TECHNOLOGY & ENGINEERING / Electrical