https://centralindianaaes.org/2016/12/12/meeting-surround-sound-invented-in-indiana/^^^
In 1977, a CBS-sponsored demonstration of the Scheiber SQ-optimized prototype "360° Spatial Decoder”...separation was absolute and complete (you could even stand outside the area of the four loudspeakers and still distinguish easily among the sounds coming from the different speakers)
Kirk Bayne
In 1977, a CBS-sponsored demonstration of the Scheiber SQ-optimized prototype "360° Spatial Decoder”...separation was absolute and complete (you could even stand outside the area of the four loudspeakers and still distinguish easily among the sounds coming from the different speakers)
Kirk Bayne