AUDIO

I. adjective Etymology: ~- Date: 1916 of or relating to acoustic, mechanical, or electrical frequencies corresponding to normally audible sound waves which are of frequencies approximately from 15 to 20,000 hertz, 2. of or relating to sound or its reproduction and especially high-fidelity reproduction, relating to or used in the transmission or reception of sound, of, relating to, or utilizing recorded sound, II. noun Date: 1934 an ~ signal, the section of television or motion-picture equipment that deals with sound, the transmission, reception, or reproduction of sound