Recent Examples on the WebGas-electric technology will become as irrelevant as quadraphonic sound. Dan Neil, WSJ, 4 Mar. 2021 Short solo cello fragments are recorded and played back through quadraphonic speakers. Mark Swed, latimes.com, 9 Feb. 2018 Emerson, Lake & Palmer’s tours were complicated and expensive, often using quadraphonic sound: Ben Ratliff, New York Times, 11 Mar. 2016 At one point, with one percussionist bowing an autoharp and the other gently massaging a timpani, a sound projectionist was meant to refract the various spectra from one loudspeaker to the next, creating a quadraphonic effect. Seth Colter Walls, New York Times, 19 May 2017
Word History
Etymology
irregular from quadri- + -phonic (as in stereophonic)