Noise estimating apparatus

Details Noise estimating apparatus Noise estimating apparatus

H - Electricity

04

N

340/72, 350/81

H04N 5/217 (2006.01) G06G 7/12 (2006.01) H04N 5/21 (2006.01)

Patent

CA 1267459

Abstract Apparatus for estimating noise in an electrical signal having substantially redundant recurring intervals includes circuitry for producing difference samples corresponding to signal differences between the recurring redundant intervals. A number of difference samples are averaged, and ones of the difference samples contributing to each average are subtracted from the averages. Magnitude values are extracted from the differences between the averages and the difference samples. A predetermined number of the magnitude values are averaged to produce a noise estimate signal.

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