̷ ̷ˈ ̷ ̷tiks, -ēks noun plural but singular or plural in construction
1. : a science that deals with the production, control, transmission, reception, and effects of sound and of the phenomena of hearing
2.
a. also acoustic : the aggregate of qualities (as absence of echo or reverberation) of an enclosure (as an auditorium) or other area that affects production, control, transmission, reception, and perception of sound : acoustic properties or peculiarities : acoustic environment
the acoustics of this room are excellent
in the clear, dead acoustic of such halls every musical fault is audible — Virgil Thomson
b. : the science of planning, building, equipping, or using an enclosure or other area with the object of achieving good acoustics