quadraphonic
adjective/ˌkwɒdrəˈfɒnɪk/
/ˌkwɑːdrəˈfɑːnɪk/
(also quadrophonic)
- (of a system of recording or broadcasting sound) coming from four different speakers at the same time compare mono, stereoWord Origin1960s: from quadri- ‘four’ + a shortened form of stereophonic (see stereo).
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quadraphonic