Loudspeaker phase distortion control using velocity feedback

Details Loudspeaker phase distortion control using velocity feedback Loudspeaker phase distortion control using velocity feedback

1996-09-25

1998-06-23

Isen, Forester W.

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Within duct

381 96, 381 718, G10K 1116, H04R 300

Patent

active

057713006

ABSTRACT:
The velocity of the integral speaker coil and cone of the canceling loudspeaker of an ANC system corresponds to the sound being produced by the canceling loudspeaker. By sensing the velocity of the speaker coil/cone and comparing the sensed velocity to the driving signal from the controller, the response time and distances can be shortened.

REFERENCES:
patent: 4677676 (1987-06-01), Eriksson
patent: 4677677 (1987-06-01), Eriksson
patent: 5119427 (1992-06-01), Hersh et al.
patent: 5588065 (1996-12-01), Tanaka et al.
The Art Of Electronics, Second Edition, p. 388, Paul Horowitz, 1989.
Introduction To Electronics, Bureau of Naval Personnel, Navy Training Course NAVPERS 10084; 1963, Chapter 7--Radio, pp. 109 and 110.

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