Loudspeaker device

Details Loudspeaker device Loudspeaker device

2006-07-28

2011-12-06

Enad, Elvin G (Department: 2832)

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Counterwave generation control path

C381S071120, C381S071130, C381S071500, C381S096000

Reexamination Certificate

active

08073149

ABSTRACT:
The loudspeaker device according to the present invention comprises a loudspeaker; a feedforward processing section for performing feedforward processing on an electric signal to be inputted to the loudspeaker based on a preset filter coefficient so that non-linear distortion which occurs from the loudspeaker is removed; and a feedback processing section for detecting vibration of the loudspeaker, and performing feedback processing on an electric signal concerning the vibration with respect to the electric signal to be inputted to the loudspeaker. The feedback processing section performs feedback processing on the electric signal concerning the vibration so that the non-linear distortion which occurs from the loudspeaker is removed and so that a frequency characteristic concerning the vibration of the loudspeaker becomes a predetermined frequency characteristic.

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European Search Report issued Mar. 3, 2011 in European Application No. 06 78 1958.
International Search Report issued Oct. 10, 2006 in the International (PCT) Application of which the present application is the U.S. National Stage.

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