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S. Voran, "Compensating for Gain in Objective Quality Estimation Algorithms,"
Proceedings of the International Conference on Acoustics, Speech and Signal Processing, Montreal, May 2004.
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.
Full Paper
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