Signal-To-Noise Improvement
Signal-To-Noise Improvement : A measure of how well a wanted signal is enhanced by processing, relative to the ambient noise and unwanted signals. Assuming that the processing leaves the signal unchanged, the signal-to-noise improvement is often expressed as the square root of the ratio of the noise power (or its average over channels for an array) before processing to the power after processing. See Chapters 4 and 9 in this Manual, and Douglas (2002)
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