单词	acoustic coupler
释义	acoustic coupler noun : a device that converts digital signals to audio signals in order to allow the transmission of data (as from a computer) over a telephone line An acoustic coupler …, tightly strapped to the phone receiver, allows the computer to fire audio tones directly through the handset, the way we do when we speak. Jack Hitt and Paul Tough, Esquire, December 1990 Word History First Known Use 1968, in the meaning defined above
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