anacoustic

anacoustic

(ˌænəˈkuːstɪk)
adj
(General Physics) unable to support the propagation of sound; soundless
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References in periodicals archive ?
These heights mark also the bases of the anacoustic zones.
The small microphone and FM transmitting unit is worn on the anacoustic ear and transmits the signal to the intraoral device, providing bone conduction to the good ear.
Taking place at ClwbIfor Bach, Y Fuwch Goch and Spillers Records, they include a solo set from Gavin Butler (The Blackout) and anacoustic set fromKidsIn Glass Houses.