Normalized frequency domain LMS adaptive filter

Details Normalized frequency domain LMS adaptive filter Normalized frequency domain LMS adaptive filter

1989-12-27

1990-07-03

Harkcom, Gary V.

Boots, shoes, and leggings

36472418, G06F 1531

Patent

active

049396854

ABSTRACT:
A normalized frequency domain Least Means Square filter. The feedback coefficient for each frequency bin is adjusted separately in the filter by use of an input power estimate. The power estimate is incorporated 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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