>There is no other meaning. Apparently there is. https://en.wikipedia.org/wiki/Stereophonic_sound https://en.wikipedia.org/wiki/Stereophonic_sound "Stereopho

>There is no other meaning. Apparently there is. https://en.wikipedia.org/wiki/Stereophonic_sound https://en.wikipedia.org/wiki/Stereophonic_sound "Stereophonic sound or, more commonly, stereo, is a method of sound reproduction that creates an illusion of multi-directional audible perspective. This is usually achieved by using two or more independent audio channels through a configuration of two or more loudspeakers (or stereo headphones) in such a way as to create the impression of sound heard from various directions, as in natural hearing.[1]" I'm inferring from that there are other methods to create an illusion of multi-directional audible perspective.