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US 2006/0188105 A1Published application
In-ear system and method for testing hearing protection
OwnerOrval Baskerville, Oliver Jonassoninventors
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OwnerOrval Baskerville, Oliver Jonassoninventors
Estimating the term…
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.
A system for testing an in-ear hearing protector having an internal vent running between an external surface and an ear canal end, the vent terminating at an in-ear vent termination point, the system comprising:
A method of testing an in-ear hearing protector having a vent with a termination point at an ear canal end of the protector, the method comprising:
An in ear microphone assembly for insertion into an in-ear hearing protector having a vent, the assembly comprising:
Dependencies are inferred from the claim text.