Description
WILEY INDIA Digital Speech 2Nd Edition by Kondoz
This book covers all aspects of digital speech coding from an introduction to the background, sampling and analysis, quantisation methods and coders through to the recent research in areas such as voice activity detection and speech enhancement.
About the Author
Professor Kondoz joined the University of Surrey as a PhD. student in October 1984. From 1986 to 1988 he was employed as a research fellow in the communications group. After completing his PhD
TABLE OF CONTENTS
Preface
Acknowledgements
Introduction
Coding Strategies and Standards
· Introduction
· Speech Coding Techniques
· Algorithm Objectives and Requirements
· Standard Speech Coders
· Summary
· Bibliography
Sampling and Quantization
· Introduction
· Sampling
· Scalar Quantization
· Vector Quantization
· Summary
· Bibliography
Speech Signal Analysis and Modelling
· Introduction
· Short-Time Spectral Analysis
· Linear Predictive Modelling of Speech Signals
· Pitch Prediction
· Summary
· Bibliography
Efficient LPC QuantizationMethods
· Introduction
· Alternative Representation of LPC
· LPC to LSF Transformation
· LSF to LPC Transformation
· Properties of LSFs
· LSF Quantization
· Codebook Structures
· MSVQ Performance Analysis
· Inter-frame Correlation
· Improved LSF Estimation Through Anti-Aliasing Filtering
· Summary
· Bibliography
Pitch Estimation and Voiced-Unvoiced Classification of Speech
· Introduction
· Pitch Estimation Methods
· Voiced-Unvoiced Classification
· Summary
· Bibliography
Analysis by Synthesis LPC Coding
· Introduction
· Generalized AbS Coding
· Code-Excited Linear Predictive Coding
· Summary
· Bibliography
Harmonic Speech Coding
· Introduction
· Sinusoidal Analysis and Synthesis
· Parameter Estimation
· Common Harmonic Coders
· Summary
· Bibliography
Multimode Speech Coding
· Introduction
· Design Challenges of a Hybrid Coder
· Summary of Hybrid Coders
· Synchronized Waveform-Matched Phase Model
· Hybrid Encoder
· Speech Classification
· Hybrid Decoder
· Performance Evaluation
· Quantization Issues of Hybrid Coder Parameters
· Variable Bit Rate Coding
· Acoustic Noise and Channel Error Performance
· Summary
· Bibliography
Voice Activity Detection
· Introduction
· Standard VAD Methods
· Likelihood-Ratio-Based VAD
· Summary
· Bibliography
Speech Enhancement
· Introduction
· Review of STSA-based Speech Enhancement
· Noise Adaptation
· Echo Cancellation
· Summary
· Bibliography
Index