Narrow directional microphone

Details Narrow directional microphone Narrow directional microphone

2006-07-28

2010-12-07

Kuntz, Curtis (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Housed microphone

C381S338000, C381S355000, C381S357000

Reexamination Certificate

active

07848535

ABSTRACT:
There is provided a narrow directional microphone which houses a plurality of microphone units of a first-order pressure gradient type (condenser microphone) while achieving reduced weight and compact shape at the same time. The narrow directional microphone includes a cylindrical microphone case that is also used as an acoustic tube and two or more microphone units housed in the microphone case, each having a front acoustic terminal and a rear acoustic terminal. A hole communicating with the inside and outside of the microphone case is provided in the peripheral wall of the microphone case, and an acoustic resistance material is provided on the inside of the microphone case so as to close the hole. The microphone units are arranged adjacently on the rear end side of the microphone case with a predetermined gap being provided between the microphone unit and the inner peripheral surface of the microphone case in a state in which the front acoustic terminal side is directed to the tip end side of the microphone case.

REFERENCES:
patent: 3444955 (1969-05-01), Hoffmann
patent: 3793489 (1974-02-01), Sank
patent: 4399327 (1983-08-01), Yamamoto et al.
patent: 4421957 (1983-12-01), Wallace, Jr.
patent: 4757546 (1988-07-01), Akino
patent: 6418229 (2002-07-01), Staat

Affiliated with

Also associated with

Rating

Narrow directional microphone does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Narrow directional microphone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Narrow directional microphone will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4162020