Digital Speech : Coding for Low Bit Rate Communication Systems (2ND)

個数:
  • ポイントキャンペーン

Digital Speech : Coding for Low Bit Rate Communication Systems (2ND)

  • 在庫がございません。海外の書籍取次会社を通じて出版社等からお取り寄せいたします。
    通常6~9週間ほどで発送の見込みですが、商品によってはさらに時間がかかることもございます。
    重要ご説明事項
    1. 納期遅延や、ご入手不能となる場合がございます。
    2. 複数冊ご注文の場合、分割発送となる場合がございます。
    3. 美品のご指定は承りかねます。
  • ≪洋書のご注文につきまして≫ 「海外取次在庫あり」および「国内仕入れ先からお取り寄せいたします」表示の商品でも、納期の目安期間内にお届けできないことがございます。あらかじめご了承ください。

  • 製本 Hardcover:ハードカバー版/ページ数 441 p.
  • 言語 ENG
  • 商品コード 9780470870075
  • DDC分類 621.3828

Full Description


Building on the success of the first edition Digital Speech offers extensive new, updated and revised material based upon the latest research. This Second Edition continues to provide the fundamental technical background required for low bit rate speech coding and the hottest developments in digital speech coding techniques that are applicable to evolving communication systems.* Features new chapters on Pitch Estimation and Voice-Unvoiced Classification of Speech, Harmonic Speech Coding and Multimode Speech Coding * Presents a comprehensively revised chapter entitled Analysis by Synthesis LPC Coding including specific examples of popular speech coders such as CELP (Code-Excited Linear Predictive) Coding * Contains an updated chapter on Efficient LPC Quantization Methods including MSVQ and anti-aliasing filtering * Discusses Voice Activity Detection (VAD) methods * Offers expanded coverage of speech enhancement techniques such as echo cancellation and noise suppression Written by a well-known, highly respected academic, this authoritative volume will be invaluable to practising engineers, network designers, computer scientists and advanced students in communications, electrical and electronic engineering.

Table of Contents

Preface                                            xiii
Acknowledgements xv
Introduction 1 (4)
Coding Strategies and Standards 5 (18)
Introduction 5 (1)
Speech Coding Techniques 6 (3)
Parametric Coders 7 (1)
Waveform-approximating Coders 8 (1)
Hybrid Coding of Speech 8 (1)
Algorithm Objectives and Requirements 9 (3)
Quality and Capacity 9 (1)
Coding Delay 10 (1)
Channel and Background Noise Robustness 10 (1)
Complexity and Cost 11 (1)
Tandem Connection and Transcoding 11 (1)
Voiceband Data Handling 11 (1)
Standard Speech Coders 12 (6)
ITU-T Speech Coding Standard 12 (1)
European Digital Cellular Telephony 13 (1)
Standards
North American Digital Cellular 14 (1)
Telephony Standards
Secure Communication Telephony 14 (1)
Satellite Telephony 15 (1)
Selection of a Speech Coder 15 (3)
Summary 18 (5)
Bibliography 18 (5)
Sampling and Quantization 23 (34)
Introduction 23 (1)
Sampling 23 (3)
Scalar Quantization 26 (13)
Quantization Error 27 (1)
Uniform Quantizer 28 (1)
Optimum Quantizer 29 (3)
Logarithmic Quantizer 32 (1)
Adaptive Quantizer 33 (3)
Differential Quantizer 36 (3)
Vector Quantization 39 (15)
Distortion Measures 42 (1)
Codebook Design 43 (1)
Codebook Types 44 (8)
Training, Testing and Codebook 52 (2)
Robustness
Summary 54 (3)
Bibliography 54 (3)
Speech Signal Analysis and Modelling 57 (30)
Introduction 57 (1)
Short-Time Spectral Analysis 57 (8)
Role of Windows 58 (7)
Linear Predictive Modelling of Speech 65 (12)
Signals
Source Filter Model of Speech Production 65 (2)
Solutions to LPC Analysis 67 (7)
Practical Implementation of the LPC 74 (3)
Analysis
Pitch Prediction 77 (7)
Periodicity in Speech Signals 77 (1)
Pitch Predictor (Filter) Formulation 78 (6)
Summary 84 (3)
Bibliography 84 (3)
Efficient LPC Quantization Methods 87 (62)
Introduction 87 (1)
Alternative Representation of LPC 87 (3)
LPC to LSF Transformation 90 (11)
Complex Root Method 95 (1)
Real Root Method 95 (3)
Ratio Filter Method 98 (2)
Chebyshev Series Method 100 (1)
Adaptive Sequential LMS Method 100 (1)
LSF to LPC Transformation 101 (2)
Direct Expansion Method 101 (1)
LPC Synthesis Filter Method 102 (1)
Properties of LSFs 103 (2)
LSF Quantization 105 (5)
Distortion Measures 106 (1)
Spectral Distortion 106 (1)
Average Spectral Distortion and Outliers 107 (1)
MSE Weighting Techniques 107 (3)
Codebook Structures 110 (7)
Split Vector Quantization 111 (2)
Multi-Stage Vector Quantization 113 (1)
Search strategies for MSVQ 114 (2)
MSVQ Codebook Training 116 (1)
MSVQ Performance Analysis 117 (4)
Codebook Structures 117 (1)
Search Techniques 117 (2)
Perceptual Weighting Techniques 119 (2)
Inter-frame Correlation 121 (9)
LSF Prediction 122 (2)
Prediction Order 124 (1)
Prediction Factor Estimation 125 (1)
Performance Evaluation of MA Prediction 126 (2)
Joint Quantization of LSFs 128 (1)
Use of MA Prediction in Joint 129 (1)
Quantization
Improved LSF Estimation Through 130 (16)
Anti-Aliasing Filtering
LSF Extraction 131 (4)
Advantages of Low-pass Filtering in 135 (11)
Moving Average Prediction
Summary 146 (3)
Bibliography 146 (3)
Pitch Estimation and Voiced-Unvoiced 149 (50)
Classification of Speech
Introduction 149 (1)
Pitch Estimation Methods 150 (28)
Time-Domain PDAs 151 (4)
Frequency-Domain PDAs 155 (3)
Time-and Frequency-Domain PDAs 158 (8)
Pre- and Post-processing Techniques 166 (12)
Voiced-Unvoiced Classification 178 (18)
Hard-Decision Voicing 178 (11)
Soft-Decision Voicing 189 (7)
Summary 196 (3)
Bibliography 197 (2)
Analysis by Synthesis LPC Coding 199 (62)
Introduction 199 (1)
Generalized AbS Coding 200 (19)
Time-Varying Filters 202 (1)
Perceptually-based Minimization 203 (3)
Procedure
Excitation Signal 206 (2)
Determination of Optimum Excitation 208 (4)
Sequence
Characteristics of AbS-LPC Schemes 212 (7)
Code-Excited Linear Predictive Coding 219 (39)
LPC Prediction 221 (1)
Pitch Prediction 222 (8)
Multi-Pulse Excitation 230 (8)
Codebook Excitation 238 (14)
Joint LTP and Codebook Excitation 252 (3)
Computation
CELP with Post-Filtering 255 (3)
Summary 258 (3)
Bibliography 258 (3)
Harmonic Speech Coding 261 (16)
Introduction 261 (1)
Sinusoidal Analysis and Synthesis 262 (1)
Parameter Estimation 263 (5)
Voicing Determination 264 (2)
Harmonic Amplitude Estimation 266 (2)
Common Harmonic Coders 268 (7)
Sinusoidal Transform Coding 268 (2)
Improved Multi-Band Excitation, 270 (1)
Inmarsat-M Version
Split-Band Linear Predictive Coding 271 (4)
Summary 275 (2)
Bibliography 275 (2)
Multimode Speech Coding 277 (80)
Introduction 277 (3)
Design Challenges of a Hybrid Coder 280 (1)
Reliable Speech Classification 281 (1)
Phase Synchronization 281 (1)
Summary of Hybrid Coders 281 (4)
Prototype Waveform Interpolation Coder 282 (1)
Combined Harmonic and Waveform Coding 282 (1)
at Low Bit-Rates
A 4 kb/s Hybrid MELP/CELP Coder 283 (1)
Limitations of Existing Hybrid Coders 284 (1)
Synchronized Waveform-Matched Phase Model 285 (13)
Extraction of the Pitch Pulse Location 286 (6)
Estimation of the Pitch Pulse Shape 292 (5)
Synthesis using Generalized Cubic Phase 297 (1)
Interpolation
Hybrid Encoder 298 (13)
Synchronized Harmonic Excitation 299 (2)
Advantages and Disadvantages of SWPM 301 (3)
Offset Target Modification 304 (4)
Onset Harmonic Memory Initialization 308 (1)
White Noise Excitation 309 (2)
Speech Classification 311 (8)
Open-Loop Initial Classification 312 (3)
Closed-Loop Transition Detection 315 (3)
Plosive Detection 318 (1)
Hybrid Decoder 319 (1)
Performance Evaluation 320 (2)
Quantization Issues of Hybrid Coder 322 (9)
Parameters
Introduction 322 (1)
Unvoiced Excitation Quantization 323 (1)
Harmonic Excitation Quantization 323 (8)
Quantization of ACELP Excitation at 331 (1)
Transitions
Variable Bit Rate Coding 331 (5)
Transition Quantization with 4 kb/s 332 (1)
ACELP
Transition Quantization with 6kb/s ACELP 332 (1)
Transition Quantization with 8 kb/s 333 (1)
ACELP
Comparison 334 (2)
Acoustic Noise and Channel Error 336 (14)
Performance
Performance under Acoustic Noise 337 (8)
Performance under Channel Errors 345 (4)
Performance Improvement under Channel 349 (1)
Errors
Summary 350 (7)
Bibliography 351 (6)
Voice Activity Detection 357 (22)
Introduction 357 (3)
Standard VAD Methods 360 (8)
ITU-T G.729B/G.723.1A VAD 361 (1)
ETSI GSM-FR/HR/EFR VAD 361 (1)
ETSI AMR VAD 362 (1)
TIA/EIA IS-127/733 VAD 363 (1)
Performance Comparison of VADs 364 (4)
Likelihood-Ratio-Based VAD 368 (7)
Analysis and Improvement of the 370 (3)
Likelihood Ratio Method
Noise Estimation Based on SLR 373 (1)
Comparison 373 (2)
Summary 375 (4)
Bibliography 375 (4)
Speech Enhancement 379 (50)
Introduction 379 (2)
Review of STSA-based Speech Enhancement 381 (21)
Spectral Subtraction 382 (2)
Maximum-likelihood Spectral Amplitude 384 (1)
Estimation
Wiener Filtering 385 (1)
MMSE Spectral Amplitude Estimation 386 (1)
Spectral Estimation Based on the 387 (2)
Uncertainty of Speech Presence
Comparisons 389 (3)
Discussion 392 (10)
Noise Adaptation 402 (4)
Hard Decision-based Noise Adaptation 402 (1)
Soft Decision-based Noise Adaptation 403 (1)
Mixed Decision-based Noise Adaptation 403 (1)
Comparisons 404 (2)
Echo Cancellation 406 (17)
Digital Echo Canceller Set-up 411 (2)
Echo Cancellation Formulation 413 (2)
Improved Performance Echo Cancellation 415 (8)
Summary 423 (6)
Bibliography 426 (3)
Index 429