Adaptive discrete-time transversal filter

Details Adaptive discrete-time transversal filter Adaptive discrete-time transversal filter

1990-05-11

1996-12-03

Mai, Tan V.

Boots, shoes, and leggings

36472419, G06F 1531

Patent

active

055814948

ABSTRACT:
Adaptive discrete-time filters, as used, for example, in echo cancellers responsive to input signals, more specifically speech signals, which can be modelled with an autoregressive process of the order of p, a control circuit for controlling the coefficients for adjusting a discrete-time transversal filter in accordance with an algorithm which requires the same amount of computation as the Least Mean Square (LMS) algorithm but leads to the same or better convergence results for this type of signals than the Orthogonal Projection (OP) algorithm.

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"Adaptive Signal Processing" by B. Widrow and S. D. Stearns, Prentice Hall; 1985, pp. 99-114, and 182-183.
"An Adaptive Filtering Algorithm Using an Orthogonal Projection to an Affine Subspace and its Properties", by K. Ozeki and T. Umeda in Electronics & Comm. in Japan, vol. 67A, No. 5, 1984, pp. 19-27.
"Linear Prediction of Speech" J. D. Markel et al, Springer Verlag, 1976, pp. 144-157.
"Convergence Analysis of a Frequency Domain . . . ", P. Sommen et al, IEEE Transactions on CAS; vol. CAS 34, No. 7, Jul. 1987.
"A Geometric Interpretation of Adaptive Algorithms" K. Kurosawa et al, Globecom Conference, pp. 49.7.1-49.7.5.
"Algorithms of Adaptive Markov Filtering of Noisy Speech Signals" Nazarov et al Telecommunications & Radio Engineering, vol. 37/38 Dec., 1983.

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