Speech Coding Algorithms: Foundation and Evolution of Standardized Coders (Hardcover)

A thought-provoking look at the historical and practical evolution of speech coding

Speech coding has evolved into a highly important branch of applied signal processing, resulting in an explosion of products such as cellular phones, answering machines, communication devices, and most recently, voice over Internet protocol. Because of the increasing demand for speech communication, speech coding technology has captured more and more attention from the research, standardization, and business communities–all of whom have been encouraged to pursue and investigate alternative coding methods with the objective of minimizing its deficiencies and limitations.

Covering standards from the inception of digital communication, Speech Coding Algorithms: Foundation and Evolution of Standardized Coders compiles many of the complex techniques widely used in speech coding and presents them in a logical and accessible fashion. By understanding the principles, performances, and limitations of the most successful standards developed throughout history, practitioners will be able to gain sound insights of widely adopted methodologies, with the ultimate goal of developing the next generation of improved algorithms.

A strong pedagogical format makes this text a valuable resource for professionals and students alike.

• Theories behind each application are thoroughly analyzed and proven
• A clear, simple writing style makes complex material easy to understand
• Abundant charts and illustrations help to clarify ideas discussed
• End of Chapter summaries, exercises, and references help to cement understanding and encourage further study

Speech Coding Algorithms: Foundation and Evolution of Standardized Coders is an invaluable textbook for students and researchers eager to enter the speech coding arena, providing a solid theoretical foundation as well as directions for further research. For professionals working in industry who need to access information regarding the many popular standards, the book represents a one-stop reference where the architecture, bit allocation, computational complexity, and operational aspects are thoroughly explained. Among the standards covered are:

• FS 1015 LPC
• TIA IS54 VSELP
• ITU-T G.728 LD-CELP
• ITU-T G.729 CS-ACELP
• ETSI GSM 6.10 RPE-LTP
• FS 1015 CELP
• TIA IS96 VBR-CELP
• FS MELP

Table of Contents

Preface.

Acronyms.

Notation.

Introduction.

Signal Processing Techniques.

Stochastic Processes and Models.

Linear Prediction.

Scalar Quantization.

Pulse Code Modulation and Its Variants.

Vector Quantization.

Scalar Quantization of Linear Prediction Coefficient.

Linear Prediction Coding.

Regular-Pulse Excitation Coders.

Code-Excited Linear Prediction.

The Federal Standard Version of CELP.

Vector Sum Excited Linear Prediction.

Low-Delay CELP.

Vector Quantization of Linear Prediction Coefficient.

Algebraic CELP.

Mixed Excitation Linear Prediction.

Source-Controlled Variable Bit-Rate CELP.

Speech Quality Assessment.

Appendix A: Minimum-Phase Property of the Forward Prediction-Error Filter.

Appendix B: Some Properties of Line Spectral Frequency.

Appendix C: Research Directions in Speech Coding.

Appendix D: Linear Combiner for Pattern Classification.

Appendix E: CELP: Optimal Long-Term Predictor to Minimize the Weighted Difference.

Appendix F: Review of Linear Algebra: Orthogonality, Basis, Linear Independence, and the Gram-Schmidt Algorithm.

Bibliography.

Index.

一本引人深思的書籍，探討語音編碼的歷史和實際演進。

語音編碼已經發展成應用信號處理的一個非常重要的分支，產生了許多產品，如手機、答錄機、通信設備，最近還有互聯網語音協議。由於對語音通信的需求不斷增加，語音編碼技術引起了研究、標準化和商業界的越來越多的關注，他們被鼓勵追求和研究替代編碼方法，以最小化其缺陷和限制。

《語音編碼算法：標準編碼器的基礎和演進》涵蓋了從數字通信的起源開始的標準，匯編了許多在語音編碼中廣泛使用的複雜技術，並以邏輯和易於理解的方式呈現。通過了解歷史上最成功的標準的原則、性能和限制，從業人員將能夠獲得廣泛採用的方法的深入見解，最終目標是開發下一代改進算法。

這本書以強大的教學形式，成為專業人士和學生的寶貴資源。

- 徹底分析和證明每個應用背後的理論
- 清晰簡潔的寫作風格使複雜的材料易於理解
- 大量的圖表和插圖有助於澄清討論的思想
- 章末摘要、練習和參考資料有助於鞏固理解並鼓勵進一步研究

《語音編碼算法：標準編碼器的基礎和演進》是一本對進入語音編碼領域的學生和研究人員來說無價的教科書，提供了堅實的理論基礎和進一步研究的方向。對於在工業界工作並需要獲取有關許多流行標準的信息的專業人士來說，這本書是一本一站式參考，其中詳細解釋了架構、位分配、計算複雜度和操作方面。其中涵蓋的標準包括：

- FS 1015 LPC
- TIA IS54 VSELP
- ITU-T G.728 LD-CELP
- ITU-T G.729 CS-ACELP
- ETSI GSM 6.10 RPE-LTP
- FS 1015 CELP
- TIA IS96 VBR-CELP
- FS MELP

《目錄》

- 前言
- 縮寫
- 符號
- 簡介
- 信號處理技術
- 隨機過程和模型
- 線性預測
- 标量量化
- 脈衝編碼調變及其變體
- 向量量化
- 線性預測係數的標量量化
- 線性預測編碼
- 常規脈衝激勵編碼器
- 編碼激勵線性預測
- 聯邦標準版本的CELP
- 向量和激勵線性預測
- 低延遲CELP
- 線性預測係數的向量量化
- 代數CELP
- 混合激勵線性預測
- 可變比特率CELP
- 語音質量評估
- 附錄A：正向預測誤差濾波器的最小相位特性
- 附錄B：線性頻譜頻率的一些特性
- 附錄C：語音編碼的研究方向
- 附錄D：用於模式分類的線性組合器
- 附錄E：CELP：最小化加權差異的最優長期預測器
- 附錄F：線性代數回顧：正交性、基底、線性獨立性和格拉姆-施密特算法
- 參考文獻
- 索引