CPC A61F 11/14 (2013.01) [A61M 16/0683 (2013.01); A61F 9/045 (2013.01); A61M 16/0666 (2013.01); A61M 2205/0216 (2013.01); A61M 2240/00 (2013.01)] | 15 Claims |
1. An earcup for a medical headgear, comprising:
a body; and
a gasket attached to the body and formed of an open-cell foam, the earcup with the body and the gasket is a frequency-dependent auditory filter providing sound attenuation generally increasing as a function of frequency, the earcup with the body and the gasket provides sound attenuation of less than or equal to 16 dB throughout a frequency range less than 315 Hz.
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