Apparatus and method for monitoring speaker cone...

Details Apparatus and method for monitoring speaker cone... Apparatus and method for monitoring speaker cone...

2011-06-14

2011-06-14

Faulk, Devona E (Department: 2614)

Electrical audio signal processing systems and devices

Monitoring/measuring of audio devices

Loudspeaker operation

C381S056000, C381S058000, C381S098000, C381S117000

Reexamination Certificate

active

07961892

ABSTRACT:
An apparatus for monitoring speaker cone displacement in an audio speaker includes: (a) an electromagnetic coil structure; (b) a ferrous core structure; the ferrous core structure and the electromagnetic coil structure being mounted with the speaker to effect variable electromagnetic coupling between the ferrous core structure and the electromagnetic coil structure as the speaker cone moves; (c) a signal injecting circuit coupled with the electromagnetic coil structure for injecting a predetermined input signal into the electromagnetic coil structure; and (d) a signal monitoring circuit coupled with the electromagnetic coil structure; the signal monitoring circuit receiving an output signal from the electromagnetic coil structure and generating an indicating signal based upon the output signal; at least one signal characteristic of the indicating signal being related with the cone displacement.

REFERENCES:
patent: 3047661 (1962-07-01), Winker
patent: 3821473 (1974-06-01), Mullins
patent: 4207430 (1980-06-01), Harada et al.
patent: 4243839 (1981-01-01), Takahashi et al.
patent: 4312118 (1982-01-01), Saik et al.
patent: 4360707 (1982-11-01), Joseph et al.
patent: 4550430 (1985-10-01), Meyers
patent: 4573189 (1986-02-01), Hall
patent: 4609784 (1986-09-01), Miller
patent: 4727584 (1988-02-01), Hall
patent: 4821328 (1989-04-01), Drozdowski
patent: 5197104 (1993-03-01), Padi
patent: 5493620 (1996-02-01), Pulfrey
patent: 6940992 (2005-09-01), Stiles
patent: 7110564 (2006-09-01), Son

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