anacoustic

anacoustic

(ˌænəˈkuːstɪk)
adj
(General Physics) unable to support the propagation of sound; soundless
References in periodicals archive ?
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.
Colleague Andrew Newton, 24, of Creigiau, said: "He played anacoustic song right at the end, which was really good.