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quadraphonic

adjective

🔊/ˌkwɒdrəˈfɒnɪk/

🔊/ˌkwɑːdrəˈfɑːnɪk/

(also quadrophonic)

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(of a system of recording or broadcasting sound录音或广播系统) coming from four different speakers at the same time 四声道的；四轨录放音的compare mono, stereo
Word Origin1960s: from quadri- ‘four’ + a shortened form of stereophonic (see stereo).