G - Physics – 01 – M
Patent
G - Physics
01
M
G01M 99/00 (2011.01) A61F 11/06 (2006.01) H04R 29/00 (2006.01)
Patent
CA 2497710
A method and system of performing a MIRE test to determine the efficacy of an in-ear hearing protector utilizes both a novel microphone assembly designed to run a microphone through a vent in the hearing protector and an optional insertion tool that expands the vent temporarily to allow for insertion of the microphone assembly. The method obtains a true MIRE test result by performing a spectral scan of a known and intense broadband sound field in a chamber formed between the ear canal end of a hearing protector and an ear drum and comparing the results to simultaneous samples of the same signal taken by a similarly designed microphone outside of the hearing protector. A comparison of the differences in the two samples at nine discrete midpoint frequencies provides a reliable basis for measuring the efficacy of an in-ear hearing protection device in the field.
Baskerville Orval Charles
Jonasson Oliver Joseph
Borden Ladner Gervais Llp
Flashtest Inc.
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