Sound collecting device minimizing electrical noise

Details Sound collecting device minimizing electrical noise Sound collecting device minimizing electrical noise

2008-01-08

2008-01-08

Mei, Xu (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Having bi-directional transducer

C381S162000, C381S091000, C381S122000

Reexamination Certificate

active

07317804

ABSTRACT:
A sound collecting device is provided which is designed to minimize adverse effects on an output caused by exposure of an electroacoustic transducer to the air. The device includes an electroacoustic transducer and a vibrating circuit. The transducer is exposed to the air and responsive to input of a sound wave to produce a corresponding acoustic signal. The vibrating circuit vibrates the transducer to shake foreign substances such as dust or drops of water from the transducer. In a modified form, an electromagnetic sensor is provided which measures an electromagnetic noise transmitted to the transducer and which removes the electromagnetic noise from an output of the transducer to produce a noiseless acoustic signal.

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