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  • © 2017

Speech Coding

with Code-Excited Linear Prediction

Authors:

  • Provides a unified theoretical framework for analysis, treatment and development of speech coding methods.
  • Covers state-of-the-art speech coding methods, including those used in the 3GPP Enhanced Voice Services codec.
  • Includes pedagogical and thorough expositions of the theoretical foundations of speech doing methods
  • Includes supplementary material: sn.pub/extras

Part of the book series: Signals and Communication Technology (SCT)

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Hardcover Book USD 139.99
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  • Durable hardcover edition
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Table of contents (15 chapters)

  1. Front Matter

    Pages i-xxi
  2. Introduction

    • Tom Bäckström
    Pages 1-8
  3. Basic Properties of Speech Signals

    1. Front Matter

      Pages 9-9
    2. Speech Production and Modelling

      • Tom Bäckström
      Pages 11-30
  4. Core Tools

    1. Front Matter

      Pages 45-45
    2. Windowing and the Zero Input Response

      • Tom Bäckström
      Pages 77-90
    3. Fundamental Frequency

      • Tom Bäckström
      Pages 91-96
    4. Residual Coding

      • Tom Bäckström
      Pages 97-116
    5. Signal Gain and Harmonics to Noise Ratio

      • Tom Bäckström
      Pages 117-120
  5. Advanced Tools and Extensions

    1. Front Matter

      Pages 121-121
    2. Pre- and Postfiltering

      • Tom Bäckström
      Pages 123-130
    3. Frequency Domain Coding

      • Tom Bäckström
      Pages 131-150
    4. Bandwidth Extension

      • Sascha Disch, Tom Bäckström
      Pages 151-160
    5. Packet Loss and Concealment

      • Jérémie Lecomte, Tom Bäckström
      Pages 161-184
    6. Voice Activity Detection

      • Christian Uhle, Tom Bäckström
      Pages 185-203
    7. Relaxed Code-Excited Linear Prediction (RCELP)

      • Guillaume Fuchs, Tom Bäckström
      Pages 205-215
  6. Standards and Specifications

    1. Front Matter

      Pages 217-217
    2. Quality Evaluation

      • Tom Bäckström
      Pages 219-235

About this book

This book provides scientific understanding of the most central techniques used in speech coding both for advanced students as well as professionals with a background in speech audio and or digital signal processing. It provides a clear connection between the Why’s?, How’s?, and What’s, such that the necessity, purpose and solutions provided by tools should be always within sight, as well as their strengths and weaknesses in each respect. Equivalently, this book sheds light on the following perspectives for each technology presented:

Objective: What do we want to achieve and especially why is this goal important?

Resource / Information: What information is available and how can it be useful?

Resource / Platform: What kind of platforms are we working with and what are the capabilities/restrictions of those platforms? This includes properties such as computational, memory, acoustic and transmission capacity of devices used.

Solutions: Which solutions have been proposed and how can they be used to reach the stated goals?

Strengths and weaknesses: In which ways do the solutions fulfill the objectives and where are they insufficient? Are resources used efficiently?

 

This book concentrates solely on code excited linear prediction and its derivatives since mainstream speech codecs are based on linear prediction It also concentrates exclusively on time domain techniques because frequency domain tools are to a large extent common with audio codecs.

Authors and Affiliations

  • International Audio Laboratories Erlangen (AudioLabs), Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany

    Tom Bäckström

About the author

Tom Bäckström is Professor for Speech Coding at University of Erlangen-Nuremberg and Member of the International Audio Labs Erlangen, funded by Fraunhofer IIS. He is active as a researcher in mathematical methods in the modeling of the voice and audio. His interests are in developing the mathematical side even more in the intersection of digital signal processing, matrix and polynomial algebra and functional analysis.

Bibliographic Information

Buy it now

Buying options

eBook USD 79.99
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book USD 129.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book USD 139.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Other ways to access