Zoom microphone device

Details Zoom microphone device Zoom microphone device

2005-08-16

2005-08-16

Pendleton, Brian T. (Department: 2644)

Electrical audio signal processing systems and devices

Directive circuits for microphones

C381S094100, C348S231400

Reexamination Certificate

active

06931138

ABSTRACT:
A pickup section transduces sounds to audio signals. A zoom control section outputs a zoom position signal corresponding to a zoom position. A directivity control section alters the directivity characteristics under a telescopic operation so as to mainly pick up sounds coming from a frontal direction with an enhancement which is in accordance with the zoom position signal, thereby outputting an R channel audio signal and an L channel audio signal. In accordance with the zoom position signal, a noise suppression section applies a greater degree of suppression to the background noise contained in the respective channel audio signals under the telescopic operation than under a wide-angle operation. As a result, a target sound from a remote location can be picked up with a sufficient enhancement in accordance with the zoom position under the telescopic operation.

REFERENCES:
patent: 4862278 (1989-08-01), Dann et al.
patent: 4984087 (1991-01-01), Fujimura et al.
patent: 5477270 (1995-12-01), Park
patent: 6445801 (2002-09-01), Pastor et al.
patent: 06-090493 (1994-03-01), None
patent: 06178383 (1994-06-01), None
patent: 10-032804 (1998-02-01), None

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