earshell

plural earshells

1. alternativeAlternative spelling of ear shell.
2. An earmold; a device worn in the ear for protection or to aid sound conduction

   At low frequencies, below 400 Hz, the attenuation of the earshell is controlled by movement of the earshell against the head.

   2006, Eric J Arnott, A New Beginning in Sight, CRC Press, →ISBN, page 408

   1 more example

   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.

   2002 October, Boaz Rafaely, Joao Carrilho, Paolo Gardonio, “Novel active noise-reducing headset using earshell vibration control”, in J Acoust Soc Am., volume 112, number 4, →DOI, →PMID, page 1471