Loudspeaker device

Details Loudspeaker device Loudspeaker device

2006-06-06

2006-06-06

Grier, Laura A. (Department: 2644)

Electrical audio signal processing systems and devices

Microphone feedback

C381S096000, C381S058000, C381S059000

Reexamination Certificate

active

07058186

ABSTRACT:
An anti-oscillation loudspeaker device where a reproduced sound is compensated based on a acoustic signal detected by a microphone and a reproduced band is enlarged is provided. In this loudspeaker device, a microphone is placed near a position where sound pressure of resonance occurring in a closed space for at least one of height, width, and depth of the inside of a cabinet is minimum. An influence of the resonance is restrained, a feedback circuit becomes stable, and a feedback amount increases.

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patent: 6088459 (2000-07-01), Hobelsberger
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patent: 0 658 064 (1995-06-01), None
patent: 10-32895 (1998-02-01), None
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Merriam-Webster's Collegiate Dictionary, 1997, Merriam-Webster, Incorporated, Tenth Edition, p. 137.
International Search Report corresponding to application No. PCT/JP00/08411 dated May 10, 2001.
International Preliminary Examination Report corresponding to PCT/JP00/08411 dated Jan. 21, 2002.

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