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Title of Thesis

Efficient Audio Coding Employing Novel Techniques & a Codec Selector Algorithm

Author(s)

Muhammad Tayyab Ali

Institute/University/Department Details
Department of Electrical Engineering / University of Engineering & Technology, Lahore
Session
2008
Subject
Electrical Engineering
Number of Pages
164
Keywords (Extracted from title, table of contents and abstract of thesis)
Efficient, Audio, Coding, Employing, Novel, Techniques, Codec, Selector, Algorithm, ITU-R, multimedia, scenario

Abstract
After the advent of compact disk, the end user has started to expect high quality output from any digital audio application. The increasing demand audio transmission and exchange over the internet and the growing trend of storage/playback of high quality audio on digital computer systems, persistently call for developing new and improved audio coding techniques which can meet the contradicting demands of high quality and low bit rate both, at the same time. Perceptual audio coding exploits the limitations of human auditory perception to discard perceptual irrelevancies from the signal has a central place in the audio coding scenario today. In this thesis, several new techniques has been developed within the paradigm of perceptual audio coding to enhance the coding efficacy and produce better output quality at reduced bit rates. The performance of the developed techniques is evaluated by employing both subjective and objective measures recommended by the ITU-R. Moreover, a coding scheme has been developed which integrates the advantages separately available sophisticated speech and audio coding techniques within a single algorithm. This codec is intended to cater to the needs of present and future multimedia scenario which contains mixed speech and audio signals and requires a single codec to handle all signal types efficiently.

Download Full Thesis
10,495 KB
S. No. Chapter Title of the Chapters Page Size (KB)
1 0 CONTENTS

 

vi
224 KB
2

1

INTRODUCTION 1
363 KB
3 2 PSYCHOACOUSTICS AND THE HUMAN HEARING 6
1,347 KB
4 3 TRANSFORM AND SUBBAND AUDIO CODING 29
1,382 KB
5 4 EFFICIENT AUDIO CODING WITH OPTIMIZED SUBBANDS 48
2,449 KB
6 5 PERCEPTUAL CODING WITH COARSE SIGNAL REPRESENTATION 88
1,465 KB
7 6 INTEGRATED SPEECH AND AUDIO CODING 111
1,543 KB
8 7 CONCLUSIONS 133
265 KB
9 8 REFERENCES & APPENDICES 136
946 KB