Normalized frequency domain lms adaptive filter

Details Normalized frequency domain lms adaptive filter Normalized frequency domain lms adaptive filter

H - Electricity

03

H

333/46

H03H 7/00 (2006.01)

Patent

CA 1270538

NORMALIZED FREQUENCY DOMAIN LMS ADAPTIVE FILTER ABSTRACT OF THE DISCLOSURE A normalized frequency domain Least Means Square filler is disclosed. The feedback coefficient for each frequency bin is adjusted separately in the filter by use of an input power estimate. The power estimate is incor- porated directly into the filter algorithm as a data- dependent, time-varying stochastic feedback coefficient. The filter is particularly useful in applications in which the input signal has large spectral variations, which could lead to filter instabilities in some frequency bins if a single feedback coefficient were employed in all frequency bins.

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