Artificial intelligent assistant

quadrasonic

quadrasonic, a.
  (kwɒdrəˈsɒnɪk)
  Also quadro-, quadri-.
  [f. quadra-, quadro-, quadri- + sonic a.]
  = quadraphonic a.

1970 Time 28 Sept. 73/2 Davis is looking forward to Columbia's further development of quadrisonic sound, a kind of double-stereo system that was introduced on tapes last year by Vanguard. 1970 Rolling Stone 12 Nov. 40/5 Phillips of Holland..has shown some very promising four-channel tapes and cassette machines, called a ‘quadrosonic’ system. 1971 Hi-Fi Sound Feb. 66/2 A compact system with good bookshelf speakers..can be quadrasonic if you like. 1973 New Yorker 24 Sept. 113/1 Be a part of New York's newest disco... Appreciate the elite atmosphere of total quadrasonic sound.

Oxford English Dictionary

yu7NTAkq2jTfdvEzudIdQgChiKuccveC 180b1fa49b407a0bb87a90f81bf41716