Sound insulating cap for sound level meters

Details Sound insulating cap for sound level meters Sound insulating cap for sound level meters

G - Physics

01

H

G01H 3/10 (2006.01)

Patent

CA 2199060

A sound-insulating cap is designed for conventional microphones without EMI protection. In an environment where EMI is likely to affect the performance of a conventional microphone, the cap is used to eliminate a substantial part of the acoustic noise and thus assess whether EMI is present during the measurements using the microphone. The cap has a member snugly fitting over the receptor of a microphone, the member made of a number of layers of acoustically different materials. Venting is provided to prevent a damage to the membrane of the microphone during the installation and removal of the cap.

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