IPA: /əˈkuːstɪkli/
KK: /əˈkuːstɪkli/
In a way that relates to sound or the science of sound, often referring to how sound is produced or heard.
The concert hall was designed acoustically to enhance the sound quality of the performances.
Acoustically → It is formed from "acoustics" (from Greek "akoustikos", meaning of hearing) and the suffix "-ally" (meaning in a manner). The word "acoustically" refers to something done in a manner related to sound or hearing.
Think of 'acoustics' relating to 'hearing' — when something is done 'acoustically', it is done in a way that pertains to sound.