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An ADPCM With An Exponential Power Estimator Based Predictor for Speech Coding

Mathew, George and Narasimhan, SV and Shivaprasad, AP (1989) An ADPCM With An Exponential Power Estimator Based Predictor for Speech Coding. In: Fourth IEEE Region 10 International Conference, TENCON '89, 22-24 November, Bombay,India, pp. 682-685.


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The application of Exponential Power Estimation (EPE)technique to realize computationally simple predictor adaptation algorithm has been investigated. An ADPCM system which employs the EPE-based adaptive predictor provides a computational advantage of 2N multiplications (N being the predictor order) and one division per iteration compared to the ADPCM which employs a block power estimator based adaptive predictor. Performance comparison has been done with two conventional ADPCM systems at different bit rates and channel conditions, using different quantizer characteristics. The resultsindicate that the proposed ADPCM performs identical to the conventional ones at 32 kbps (kilo bits per second) and better than them at 16 kbps.

Item Type: Conference Paper
Publisher: IEEE
Additional Information: Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 29 May 2006
Last Modified: 19 Sep 2010 04:27
URI: http://eprints.iisc.ac.in/id/eprint/6930

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