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:
Apr. 04, 1995
Filed:
May. 16, 1994
Frederic G Pla, Schenectady, NY (US);
Robert A Hedeen, Clifton Park, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A method for matching the second output of a second sensor to the first output of a first sensor wherein a source transducer is driven by a reference analog or digital electrical signal to produce the physical quantity (e.g., acoustic pressure) the sensors (e.g., pressure sensors, such as microphones) can sense. A reference adaptive filter determines filtering coefficients to match the reference electrical signal to the first output of the first sensor and therefore models the source transducer and the first sensor (which typically is an independently-calibrated sensor). Thereafter, a second adaptive filter compensates the second output of the second sensor to match the output from a fixed filter having filtering coefficients identical to those determined by the reference adaptive filter, such output compensation of the second sensor not requiring the presence of the first sensor.