Boots – shoes – and leggings
Patent
1986-02-27
1989-03-07
Harkcom, Gary V.
Boots, shoes, and leggings
364553, G06F 1531
Patent
active
048112615
ABSTRACT:
An adaptive digital filter for identifying a transfer function of a unknown system is employed, for example, for echo cancellation and howling prevention. The transfer function of the adaptive filter can be obtained by the sum of outputs from N paths and forms a system of orthogonal functions having coefficient parameters of four groups of a, b, p and q. The groups p and q are adaptively adjusted in response to an error signal while the groups a and b are previously set based on a measurement effected previously or adaptively adjusted in response to the error signal.
REFERENCES:
patent: 3967102 (1976-06-01), McCown
patent: 3973112 (1976-08-01), Sloane
patent: 4067060 (1978-01-01), Poussart et al.
patent: 4377793 (1983-03-01), Horna
patent: 4520491 (1985-05-01), Raulin et al.
patent: 4606045 (1986-08-01), Miller
patent: 4660163 (1987-04-01), Fukasawa et al.
patent: 4696015 (1987-09-01), Palicot et al.
Smith, "Identifier for an Unknown Process", Proc. of IFAC Toyko Symposium, pp. 255-264, 1965.
Itoh, Yasuo et al., "An Acoustic Echo Canceller for Teleconference", IEEE International Conference on Communication, 1985, pp. 1498-1502.
Cadzow, James A., "Recursive Digital Filter Synthesis Via Gradient Based Algorithms", IEEE Transaction on Acoustics, Speech and Signal Proceeding, vol. ASSP-24, No. 5, Oct. 1976, pp. 349-355.
Widrow, Bernard et al., "A Comparison of Adaptive Algorithms Based on the Methods of Steepest Descent and Random Search", IEEE Transactions on Antennas and Propagation, vol. AP-24, No. 5, Sep. 1976, pp. 615-637.
Chen, Chi-Tsong, "9-5 Transfer Function of Degree 1 and 2", One-Dimensional Digital Signal Processing, 1979, Marcel Dekker Inc., pp. 310-325.
Lee, Y. W., "4. Laguerre Networks", Tokyo University International Edition No. 58, Statistical Theory of Communication, 1970, John Wiley & Sons Inc., pp. 487-489.
Itoh Yoshio
Kobayashi Masaki
Harkcom Gary V.
OKI Electric Industry Co., Ltd.
Shaw Dale M.
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