Tab coefficient updating device of finite impulse-responding ada

Details Tab coefficient updating device of finite impulse-responding ada Tab coefficient updating device of finite impulse-responding ada

1995-03-07

1997-12-23

Malzahn, David H.

Boots, shoes, and leggings

G06F 1710

Patent

active

057012628

ABSTRACT:
A tab coefficient updating device of an FIRADF capable of greatly reducing the amount of hardware therefor and integrating its tab coefficient updating value operating circuit using a simple circuit design. The tab coefficient updating device includes a finite impulse-responding adaptive digital filter unit for filtering an input signal using a tab coefficient updated for a predetermined one of all tabs by a tab coefficient signal and a tab address signal, and a tab address generating unit for generating the tab address signal associated with the predetermined tab of the finite impulse-responding adaptive digital filter unit and applying the generated tab address signal to a tab coefficient updating value operating unit as well as the finite impulse-responding adaptive digital filter unit. The tab coefficient updating value operating unit serves to receive the input signal and an error signal indicative of the difference between an output signal of the finite impulse-responding adaptive digital filter unit and a requirement signal and execute an operation of an updating value for only one, of the tab coefficients, designated by the tab address signal received from the tab address generating unit on the basis of the signals received therein.

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