ABSTRACT
The science of hearing, relating to the perception of sounds produced by vibrations in air or another medium; it bears the same relation to sound as optics does to light. In scientific terms, the fundamental phenomenon of sound turned out to be less challenging than the phenomenon of light, but in matters of aesthetic sensibility the technical challenges posed by *music are at least equal to those of visual art. The phonetics of human speech are equally complex, and underlie the visual technology of *writing.
