Learn how to say Acoustically correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word acoustic:
1relating to sound or the sense of hearing:
dogs have a much greater acoustic range than humans
(of building materials) used for soundproofing or modifying sound:
(of a device or system) utilizing sound energy in its operation.
(of an explosive mine or other weapon) able to be set off by sound waves.
2(of popular music or musical instruments) not having electrical amplification:
an acoustic guitar
1 (also acoustics) the properties or qualities of a room or building that determine how sound is transmitted in it:
the Symphony Hall has perfect acoustics
2 (acoustics) [treated as singular] the branch of physics concerned with the properties of sound:
Tyndall lectured on acoustics
3a guitar without electrical amplification:
these German-made acoustics are exceptional value and a pleasure to play
mid 17th century: from Greek akoustikos, from akouein ‘hear’