Electroacoustic

Definition
Electroacoustics is a

{{Quote|branch of Acoustic Engineering [that] deals with the design of headphones, microphones, loudspeakers, sound systems, sound reproduction and recording. There has been a rapid increase in the use of portable electronic devices which can reproduce sound and rely of electroacoustic engineering, e.g. Mobile phones, Portable media players, and Tablet computers.

{{Wikipedia|Acoustical engineering}}