A resonator earplug contains Helmhotz resonator chambers within an earplug cavity to increase noise attenuation.
Click on the images to see the title page of the patents. Click on the links below to download full patents.
Resonator EarplugA resonator earplug contains Helmhotz resonator chambers within an earplug cavity to increase noise attenuation. Click on the images to see the title page of the patents. Click on the links below to download full patents. |