Filter system for hearing protection device for continuous noise exposure monitoring
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United States of America Patent
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Aug 21, 2012
Grant Date -
Nov 17, 2005
app pub date -
May 17, 2005
filing date -
May 17, 2004
priority date (Note) -
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Abstract
A hearing protection device to be worn at either a primary position or a secondary position, comprising a hearing protection component and a noise measurement component, and an attachment mechanism to securely attach the noise measurement component to the hearing protection component, wherein at the primary position the noise measurement component detects a protected noise exposure and at the secondary position it detects an unprotected exposure, the noise measurement component comprises a microphone, a compartment that encloses the microphone and at least one filter, and the filter reduces resonance of said compartment incident upon said microphone.
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