Field check for hearing protection devices
Assignee3M Innovative Properties Company
InventorsAntoine Bernier, Paul D. Henry, Alexandre J. Raymond, Jeffrey L. Hamer, Cameron J. Fackler
Life of this patent
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Abstract
Systems and methods for check a relative sensitivity of two or more microphones of a hearing protection device include sensing ambient sound using two or more microphones of the hearing protection device and sampling the ambient sound. The samples of the ambient sound may be used to determine whether the ambient sound is adequate for determining microphone sensitivity and to determine whether a threshold relative sensitivity of the two or more microphones is reached. A pass or fail indication may be provided to a user based on whether the threshold relative sensitivity is reached.
Claims20
A method to check a relative sensitivity of two or more microphones of a hearing protection device, the method comprising:
- sensing ambient sound using the two or more microphones of the hearing protection device;
- sampling the ambient sound to produce a plurality of audio samples of the ambient sound;
- determining whether the ambient sound is adequate for determining microphone sensitivity based on the plurality of audio samples of the ambient sound;
- determining whether a relative sensitivity of the two or more microphones is within a threshold range based on the plurality of audio samples of the ambient sound;
- and
- providing a pass or fail indication to a user based on the determining of whether the threshold relative sensitivity is reached.
A hearing protection device comprising:
- two or more microphones to sense sound of an environment;
- and
- a controller comprising one or more processors and operatively coupled to the two or microphones to check a relative sensitivity of two or more microphones, the controller configured to:
- sample ambient sound sensed by the two or more microphones to produce a plurality of audio samples of the ambient sound;
- determine whether the ambient sound is adequate for determining microphone sensitivity based on the plurality of audio samples of the ambient sound;
- determine whether a relative sensitivity of the two or more microphones is within a threshold range based on the plurality of audio samples of the ambient sound;
- and
- provide a pass or fail indication to a user based on the determining of whether the threshold relative sensitivity is reached.
Dependencies are inferred from the claim text.