by Ge Gao. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1999. / Includes bibliographical references (leaves 101-107). / Text in English; abstracts in English and Chinese. / by Ge Gao. / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Attributes of speech coders --- p.1 / Chapter 1.1.1 --- Bit rate --- p.2 / Chapter 1.1.2 --- Speech quality --- p.3 / Chapter 1.1.3 --- Complexity --- p.3 / Chapter 1.1.4 --- Delay --- p.4 / Chapter 1.1.5 --- Channel-error sensitivity --- p.4 / Chapter 1.2 --- Development of speech coding techniques --- p.5 / Chapter 1.3 --- Motivations and objectives --- p.7 / Chapter 2 --- Waveform interpolation speech model --- p.9 / Chapter 2.1 --- Overview of speech production model --- p.9 / Chapter 2.2 --- Linear prediction(LP) --- p.11 / Chapter 2.3 --- Linear-prediction based analysis-by-synthesis coding(LPAS) --- p.14 / Chapter 2.4 --- Sinusoidal model --- p.15 / Chapter 2.5 --- Mixed Excitation Linear Prediction(MELP) model --- p.16 / Chapter 2.6 --- Waveform interpolation model --- p.16 / Chapter 2.6.1 --- Principles of waveform interpolation model --- p.18 / Chapter 2.6.2 --- Outline of a WI coding system --- p.25 / Chapter 3 --- Pitch detection --- p.31 / Chapter 3.1 --- Overview of existing pitch detection methods --- p.31 / Chapter 3.2 --- Robust Algorithm for Pitch Tracking(RAPT) --- p.33 / Chapter 3.3 --- Modifications of RAPT --- p.37 / Chapter 4 --- Development of a 1.7kbps speech coder --- p.44 / Chapter 4.1 --- Architecture of the coder --- p.44 / Chapter 4.2 --- Encoding of unvoiced speech --- p.46 / Chapter 4.3 --- Encoding of voiced speech --- p.46 / Chapter 4.3.1 --- Generation of PCW --- p.48 / Chapter 4.3.2 --- Variable Dimensional Vector Quantization(VDVQ) --- p.53 / Chapter 4.3.3 --- Sparse frequency representation(SFR) of speech --- p.56 / Chapter 4.3.4 --- Sample selective linear prediction (SSLP) --- p.58 / Chapter 4.4 --- Practical implementation issues --- p.60 / Chapter 5 --- Development of a 2.0kbps speech coder --- p.67 / Chapter 5.1 --- Features of the coder --- p.67 / Chapter 5.2 --- Postfiltering --- p.75 / Chapter 5.3 --- Voice activity detection(VAD) --- p.76 / Chapter 5.4 --- Performance evaluation --- p.79 / Chapter 6 --- Conclusion --- p.85 / Chapter A --- Subroutine for pitch detection algorithm --- p.88 / Chapter B --- Subroutines for Pitch Cycle Waveform(PCW) generation --- p.96 / Chapter B.1 --- The main subroutine --- p.96 / Chapter B.2 --- Subroutine for peak picking algorithm --- p.98 / Chapter B.3 --- Subroutine for encoding the residue (using VDVQ) --- p.99 / Chapter B.4 --- Subroutine for synthesizing PCW from its residue --- p.100 / Bibliography --- p.101
| Identifer | oai:union.ndltd.org:cuhk.edu.hk/oai:cuhk-dr:cuhk_322827 |
| Date | January 1999 |
| Contributors | Gao, Ge., Chinese University of Hong Kong Graduate School. Division of Electronic Engineering. |
| Source Sets | The Chinese University of Hong Kong |
| Language | English, Chinese |
| Detected Language | English |
| Type | Text, bibliography |
| Format | print, vi, 107 leaves : ill. ; 30 cm. |
| Rights | Use of this resource is governed by the terms and conditions of the Creative Commons “Attribution-NonCommercial-NoDerivatives 4.0 International” License (http://creativecommons.org/licenses/by-nc-nd/4.0/) |
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