Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Thomas M. Rezachek0
Michael Freeman0
Gary P. Shubinsky0
Date of Patent
April 8, 2014
0Patent Application Number
131010390
Date Filed
May 4, 2011
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A photoacoustic detector includes first and second microphones carried by an acoustic sensing chamber. Signals from the microphones are processed using lock-in detection to increase the signal-to-noise ratio. An acoustic pressure generator can be incorporated to calibrate the microphones.
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