Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Housed microphone
Reexamination Certificate
2007-07-17
2007-07-17
Tran, Sinh (Department: 2615)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Housed microphone
C381S313000
Reexamination Certificate
active
10757842
ABSTRACT:
A directional microphone system comprises two membranes that, on the one hand, are respectively acoustically connected via an air volume with one of two spatially separate sound entrance ports, and on the other hand are acoustically coupled with one another via a third air volume, as well as an output generator configured to generate at least one output signal of the directional microphone from the vibration of one of the two membranes.
REFERENCES:
patent: 4504703 (1985-03-01), Schneiter et al.
patent: 4974117 (1990-11-01), Irwin
patent: 5524056 (1996-06-01), Killion et al.
Variable directivity capacitor microphone, Yoshio et al.; Published Japanese Patent Application (Published Jun. 2, 1995). Retrieved Jun. 22, 2006 <retrieved from http://www.jpo.go.jp>. 1 page of abstract, 11 pages of machine translation and 6 pages of drawings.
Mechanically coupled ears for directional hearing in the parasitoid flyOrmia ochracea, R.N. Miles, Dec. 1995 Acoustical Society of America, 3059-3070.
Briney III Walter F
Schiff & Hardin LLP
Siemens Audiologische Technik GmbH
Tran Sinh
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