US 11,743,629 B2
Hearing protection devices, speakers and noise exposure sensors therefore, and sensor housings and associated methods for the same
Peter Kara, Morris Plains, NJ (US); Erik Pertot, Morris Plains, NJ (US); Viggo Henriksen, Morris Plains, NJ (US); and Tomas Brhel, Morris Plains, NJ (US)
Assigned to HONEYWELL INTERNATIONAL INC., Charlotte, NC (US)
Filed by Honeywell International Inc., Charlotte, NC (US)
Filed on Jan. 19, 2022, as Appl. No. 17/579,119.
Application 17/579,119 is a continuation of application No. 16/881,585, filed on May 22, 2020, granted, now 11,265,644.
Claims priority of application No. 19176574 (EP), filed on May 24, 2019.
Prior Publication US 2022/0141571 A1, May 5, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04R 1/10 (2006.01); A61F 11/14 (2006.01); H04R 5/033 (2006.01); H04R 29/00 (2006.01)
CPC H04R 1/1083 (2013.01) [A61F 11/14 (2013.01); H04R 1/1008 (2013.01); H04R 1/1066 (2013.01); H04R 5/0335 (2013.01); H04R 29/001 (2013.01); A61F 11/145 (2022.01)] 20 Claims
OG exemplary drawing
 
1. A speaker and noise sensor assembly for a hearing protection device, the speaker and noise sensor assembly comprising:
a speaker dimensioned and configured to be disposed within an ear cup of the hearing protection device;
a sensor housing defining an axial bore having a proximal end and a distal end, the sensor housing disposed along a center axis of the speaker;
a noise sensor comprising a first microphone acoustically coupled with an inner volume of the earcup; and
an external noise sensor assembly comprising a second microphone acoustically coupled with an exterior of the hearing protection device,
wherein the speaker and noise sensor assembly is configured to compare a magnitude of noise exposure measured by the first microphone and a magnitude of noise exposure measured by the second microphone to identify when the noise sensor is in need of calibration, and
wherein the axial bore of the sensor housing is dimensioned and configured to slidably receive, via the distal end, a calibration tool to form an airtight seal with an inner surface of the sensor housing, such that the first microphone is configured to be disposed within a closed system during calibration.