Active acoustic attenuation system with reduced convergence time

Details Active acoustic attenuation system with reduced convergence time Active acoustic attenuation system with reduced convergence time

1990-01-12

1991-06-04

Ng, Jin F.

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Adjacent ear

G10K 1116

Patent

active

050220829

ABSTRACT:
A method is provided for reducing convergence time of an active acoustic attenuation system upon start-up or upon a given sensed parameter change. The weights of the adaptive filter model coefficient weight vector are started at or changed to values which are closer to the converged value than the initial or present nonconverged value is to the converged value. The filter model converges in a shorter time as the weights change and are updated from their starting or changed value to the converged value.

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patent: 4677677 (1987-06-01), Eriksson
patent: 4736431 (1988-04-01), Allie et al.
patent: 4783817 (1988-11-01), Hamada et al.
patent: 4815139 (1989-03-01), Eriksson et al.
patent: 4837834 (1989-06-01), Allie
Adaptive Signal Processing, Bernard Widrow and Samuel D. Stearns, Prentice-Hall, 1985.

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