Proceedings of the International Conference on Acoustics, Speech and Signal Processing (ICASSP '04), vol.3, pp. 1068-71 , Montreal, May 17-21, 2004.

Compensating for Gain in Objective Quality Estimation Algorithms

doi: 10.1109/ICASSP.2004.1326733

Stephen D. Voran

Abstract: When objectively estimating speech, audio, or video quality, it is often necessary to compensate for a system gain or to "gain match" two or more signals. One can take three views of a system, leading to three different definitions of gain, and three different gain compensation solutions: one that minimizes distortion, one that matches input–output power, and one that maximizes signal–todistortion ratio. We derive these three solutions, describe the algebraic and geometric relationships between them, and provide a generalized result that subsumes all three. We provide examples showing that these three solutions do differ in practical quality estimation situations. We also report some of the gain compensation choices found in the quality estimation literature.

Keywords: video quality; audio quality; speech quality; gain compensation; distortion minimization; gain matching; input-output power matching; objective quality estimation algorithms; signal-to-distortion ratio maximization

For technical information concerning this report, contact:

Stephen D. Voran
Institute for Telecommunication Sciences
(303) 497-3839

To request a reprint of this report, contact:

Lilli Segre, Publications Officer
Institute for Telecommunication Sciences
(303) 497-3572

Disclaimer: Certain commercial equipment, components, and software may be identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.

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