psychoacoustics
noun
psy·cho·acous·tics ˌsī-kō-ə-ˈkü-stiks 
plural in form but singular in construction
: a branch of science dealing with the perception of sound, the sensations produced by sounds, and the problems of communication
psychoacoustic
ˌsī-kō-ə-ˈkü-stik
adjective 
Word History
First Known Use
1948, in the meaning defined above
Medical Definition
psychoacoustics
noun, plural in form but singular in construction
psy·cho·acous·tics ˌsī-kō-ə-ˈkü-stiks
: a branch of science dealing with the perception of sound, the sensations produced by sounds, and the problems of communication