quadraphony

n. high fidelity stereophonic sound reproduction using signals transmitted through 4 different channels

Quadraphonic sound uses four channels in which speakers are positioned at the four corners of the listening space, reproducing signals that are (wholly or in part) independent of each other. Quadraphonic audio was one of the earliest consumer offerings in surround sound. It was a commercial failure due to many technical problems that were solved too late to save the technology from disaster. The format was more expensive than stereo, required extra speakers, and suffered from lack of a standard format for LP records. The rise of home theater products in the late 1980s and early 1990s brought multi-channel recording formats back to the forefront, although in a completely different and perhaps unexpected form. Quite a few quadraphonic recordings were made before its demise, and some of these recordings were later reissued on CD in Dolby Surround.
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Noun
1. a stereophonic sound recording or reproducing system system using four separate channels
(synonym) quadraphonic system, quadriphonic system
(hypernym) stereo, stereo system, stereophonic system

quadraphony
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