Method and apparatus for suppressing noise during...

Details Method and apparatus for suppressing noise during... Method and apparatus for suppressing noise during...

G - Physics

01

N

324/50

G01N 27/90 (2006.01)

Patent

CA 1178339

ABSTRACT OF THE DISCLOSURE A filter apparatus is disclosed for filtering out any reoccurring noise present in a defect signal received from a flow detection device such as an eddy current test probe. Filter circuit means receives the defect signal generated by the flaw detector device and produces an output signal duplicative of any reoccurring noise present therein. A differential amplifier substracts the output signal of the filter circuit means from the defect signal generated by the flaw detection device and amplifies the difference. A filtered defect signal void of any reoccurring noise is thereby produced.

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