Adaptive digital filter and an echo canceler incorporating the s

Details Adaptive digital filter and an echo canceler incorporating the s Adaptive digital filter and an echo canceler incorporating the s

1987-10-30

1989-07-25

Mottola, Steven

Boots, shoes, and leggings

379410, H04B 323

Patent

active

048520365

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. In addition, means are provided to make the rate of convergence high even when the input signal is nonwhite.

REFERENCES:
"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, No. 366, pp. 2-107, "A Synthesis Method of Adaptive Digital Filters," Itoh et al.
Measurement and Control, vol. 7, No. 9; Sep. 1978, pp. 597-601, "A Learning Method for System Identification", Noda et al.

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