I think stereo vision predates the usage in sound, and refers more to the 3D depth perception of shapes that it allows. Stereography was invented sometime in th

I think stereo vision predates the usage in sound, and refers more to the 3D depth perception of shapes that it allows. Stereography was invented sometime in the mid 1800s [1]. Stereo sound similarly is meant to give a more realistic perception of sound in space compared to mono. 1. https://www.smithsonianmag.com/innovation/sterographs-original-virtual-reality-180964771/ https://www.smithsonianmag.com/innovation/sterographs-origin...