Acoustically

from WordNet (r) 3.0 (2006)
acoustically
    adv 1: with respect to acoustics; "acoustically ill-equipped
           studios"
from The Collaborative International Dictionary of English v.0.48
Acoustically \A*cous"tic*al*ly\, adv.
   In relation to sound or to hearing. --Tyndall.
   [1913 Webster]
antiflux / dictionary / Acoustically
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