名詞
An earmold; a device worn in the ear for protection or to aid sound conduction
- 例文
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その他の例文 (1)
ANR headsets which employ a loudspeaker and a microphone inside the earshell connected via an analog feedback controller were studied in the 50’s by Meeker, Hawley,and Simshauser.
At low frequencies, below 400 Hz, the attenuation of the earshell is controlled by movement of the earshell against the head.