Non-linear deterministic stochastic filtering method and system

Details Non-linear deterministic stochastic filtering method and system Non-linear deterministic stochastic filtering method and system

1994-05-10

1998-02-24

Ramirez, Ellis B.

Boots, shoes, and leggings

364576, 36472419, 36472401, 395 235, H04B 1500

Patent

active

057216940

ABSTRACT:
A method and system for filtering a noisy input comprised of an information signal and a noise signal. No prior time domain value information or frequency domain parameter information on the information signal or noise signal is available. A whitening filter renders the noise part of a noise signal into a substantially white noise signal. A fourier transform system provides an amplitude spectrum output and a phase output. A multiplier squares the amplitude spectrum output thus providing a power spectrum output. A zero mean sub-system generates a zero mean power spectrum output from the power spectrum output. A square root sub-system squares the zero mean power spectrum output thus providing a resultant output. An inverse Fourier transform sub-system inversely transforms the resultant output to provide a time domain resultant output. An inverse whitening filter provides a substantially noise free output from the time domain resultant output.

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