Narrow directional microphone

Details Narrow directional microphone Narrow directional microphone

2005-09-15

2009-11-24

Ensey, Brian (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Housed microphone

C381S358000, C381S359000

Reexamination Certificate

active

07623671

ABSTRACT:
A narrow directional microphone includes an acoustic tube made of a resin film having thousands of minute holes, and a microphone unit attached in a rear end of the acoustic tube. The acoustic tube is made of a resin film having thousands of minute holes and curled up. The minute holes let air in but block droplets.

REFERENCES:
patent: 4347844 (1982-09-01), Ohki et al.
patent: 6418229 (2002-07-01), Staat
patent: 7251340 (2007-07-01), Juhler
patent: 62-118697 (1987-05-01), None
patent: 62-118698 (1987-05-01), None
patent: 11-331978 (1999-11-01), None
patent: 2000-83292 (2000-03-01), None
U.S. Appl. No. 11/416,201, filed May 3, 2006, Akino.

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