Analog noise cancellation system using digital optimizing of var

Details Analog noise cancellation system using digital optimizing of var Analog noise cancellation system using digital optimizing of var

1993-09-20

1995-08-08

Brinich, Stephen

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Adjacent ear

381 94, H04R 2500

Patent

active

054406420

ABSTRACT:
A digitally controlled analog cancellation system containing an analog noise cancellation circuit with a residual microphone (39) with a digital virtual earth controller (40) for optimizing variable parameters employed in the analog cancellation circuit.

REFERENCES:
patent: 4837832 (1989-06-01), Fanshel
patent: 5105377 (1992-04-01), Ziegler
patent: 5140640 (1992-08-01), Groupe et al.
patent: 5146505 (1992-09-01), Pfaff et al.
patent: 5216721 (1993-06-01), Melton
patent: 5259033 (1993-11-01), Goodings et al.
patent: 5321759 (1994-06-01), Yuan
patent: 5325437 (1994-06-01), Doi et al.

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