Adaptive digital filter

Details Adaptive digital filter Adaptive digital filter

1987-07-07

1989-09-19

Harkcom, Gary V.

Boots, shoes, and leggings

364553, G06F 1531, G06F 1520, G06G 748

Patent

active

048687758

ABSTRACT:
In an adaptive digital filter, the inputs to the variable-coefficient scalers of an adaptive digital filter are mutually orthogonal and their mean square values are equal. As a result, the rate of convergence of the variable coefficients of the variable-coefficient scalers is rapid. The adaptive filter is suitable for use in echo cancelers.

REFERENCES:
patent: 4359778 (1982-11-01), Lee
patent: 4520491 (1985-05-01), Raulin et al.
patent: 4606045 (1986-08-01), Miller
patent: 4660163 (1987-04-01), Fukasawa
patent: 4811261 (1989-03-01), Kobayashi et al.
"Computer Aided Design and Analysis of Standard IIR Architectures--Part II" IEEE Circuits and Systems Magazine, vol. 4, No. 1, Mar. 1982, pp. 4-10.
1985 Symposium on Information Systems of the Institute of Electronics and Communication Engineers of Japan, "A Synthesis Method of Adaptive Digital Filters" Itoh et al., No. 366, pp. 2-107.
Measurement and Control, vol. 7, No. 9, Sep. 1978, "A Learning Method for System Identification" Noda et al., pp. 597-605.

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