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Investigation of speech coding algorithms for voice communication through personal computers.

Parvez, Shahid (1998) Investigation of speech coding algorithms for voice communication through personal computers. Masters thesis, King Fahd University of Petroleum and Minerals.

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English Abstract

The tremendous growth of multimedia communications has led to an increasing demand for speech coding techniques. Low-cost highly-efficient speech coding at low bit rate is important for personal multimedia communications. Recent developments in speech coding around 8kb/s are investigated; in particular the work was focused on adapting the new standard G.729 for multimedia applications. A new speech coding algorithm compatible with PC environment for multimedia applications has been developed by adapting G.729 and enhancing it with the latest developments in mediumband coding. This coder at a sampling rate of 11 ks/s and a bit rate of 8.8kb/s, provides high quality voice over the band of frequencies ranging from 20Hz to 5400Hz. It is computationally more efficient. This algorithm is compared to the standard G.729 with respect to spectral distortion and quality. Issues related to generation of codebooks and quantization of parameters are considered. An algorithm for efficient computation of the Line Spectral Frequencies is also proposed. The applications of the proposed coder include speech storage and communication in PC multimedia environment.



Item Type:Thesis (Masters)
Date:May 1998
Date Type:Completion
Subjects:Engineering
Divisions:College Of Computer Sciences and Engineering > Systems Engineering Dept
Creators:Parvez, Shahid
Committee Advisor:Elshafei, M.A.
Committee Members:Ahmed, Munir and Toker, Onur and AlMohammed, H.
ID Code:10261
Deposited By:KFUPM ePrints Admin
Deposited On:22 Jun 2008 17:00
Last Modified:26 Apr 2011 08:08

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