Active noise reducing

Details Active noise reducing Active noise reducing

1991-12-03

1994-03-08

Isen, Forester W.

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Adjacent ear

G10K 1116

Patent

active

052934250

ABSTRACT:
A noise reducing system includes an input transducer that energizes an adaptive filter. The adaptive filter energizes an output transducer that creates a noise reducing field at the input transducer.

REFERENCES:
patent: 4589133 (1986-05-01), Swinbanks
patent: 4783817 (1988-11-01), Hamada et al.
patent: 4876722 (1989-10-01), Dekker et al.
patent: 5022082 (1991-06-01), Eriksson et al.
patent: 5033082 (1991-07-01), Eriksson et al.
patent: 5117642 (1992-06-01), Nakanishi et al.
Signal Enhancement Using Single and Multi-Sensor Measurements, RLE Technical Report No. 560, E. Weinstein, A. V. Oppenheim and M. Feder, Published Dec. 7, 1990.

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