acoustic

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acoustic

, acoustical
1. of or related to sound, the sense of hearing, or acoustics
2. designed to respond to, absorb, or control sound
3. (of a musical instrument or recording) without electronic amplification

acoustic

[ə′küs·tik]
(acoustics)
Relating to, containing, producing, arising from, actuated by, or carrying sound.

acoustic, acoustical

The qualifying adjectives acoustic and acoustical have the following meanings: arising from, actuated by, containing, producing, or related to sound. In general, acoustic is used when the term being qualified designates something that has the properties, dimensions, or physical characteristics associated with sound waves; acoustical is used when the term being qualified does not explicitly designate something that has the properties, dimensions, or physical characteristics of sound (e.g., acoustical engineering). However, sometimes these two terms are used interchangeably.

acoustic

Associated with sound at frequencies that are audible to human beings.
References in periodicals archive ?
If you've ever heard the ref's call at a football game, you know about acoustic enhancement.
Pleomorphic adenomas on US are typically rounded, well circumscribed, and hypoechoic with associated distal acoustic enhancement.
The music and drama auditorium has a conventional stage and is partly lined with timber for acoustic enhancement, but this also brings an honorific quality to the principal performance space.