The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 02, 1994
Filed:
Jul. 22, 1992
Applicant:
Inventor:
George F Cardas, Bandon, OR (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
381 92 ; 381113 ;
Abstract
A microphone comprises a plurality of oppositely oriented electroacoustic transducer pairs arranged in a body or a resonator cavity and electrically algebraically summed, whereby ambient acoustic shock impulses and vibration induce opposite electrical phase output, while an audio signal entering an acoustic channel to the transducer cavity produces a damped, in-phase, summed output, greatly enhancing the signal to noise ratio and producing a high output level that is substantially non-microphonic.