acoustic seal

acoustic seal

[ə′küs·tik ′sēl]
(engineering acoustics)
A joint between two parts to provide acoustical coupling with low losses of energy, such as between an earphone and the human ear.
References in periodicals archive ?
They block more ambient noise than the AirPods thanks to their acoustic seal, but the bass isn't as deep as other Beats I've tried.
Comfortable headset, angled ear tubes, and soft, flexible eartips were designed for an optimal acoustic seal to help maintain acoustic sensitivity and minimize ambient noise for accurate auscultation.
Ergonomic features include user-exchangeable bows, self-adjusting housings, soft leather cups and slow-retention ear-cup foam, all of which go a long way in ensuring a comfortable fit and an optimal acoustic seal on the ear.
There's excellent sound quality at both the high and low ends - the booming bass is superb - while an acoustic seal blocks out all the annoying background noise.
The mic port hole aligns with a corresponding hole designed into the PCB, and a solder pad around the port hole provides an acoustic seal between the microphone and the main phone PCB.
The ear pads are made of a soft and pliable butyl rubber material for an acoustic seal and the best hearing protection.
A check for a proper acoustic seal was performed prior to each test to ensure that outside noise did not contaminate the results.
The boot also provides the functions of a gasket seal to the environment and an acoustic seal. No assembly is required.
The engine bay heat shield has been filled with acoustic damping material to reduce powertrain noise and diesel cars are equipped with extra acoustic seals to further reduce noise intrusion.
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