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acoustic coupler

noun, Computers.
1.
a modem designed to connect a telephone handset to a computer terminal or processor.
Origin
1965-1970
1965-70
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for acoustic coupler
  • Provision shall also be made to enable calibration with an external acoustic coupler.
  • Newer models rarely require putting the phone handset on the acoustic coupler.
  • Devices typically include an acoustic coupler for the telephone handset, a simplified keyboard, and a visible message display.
British Dictionary definitions for acoustic coupler

acoustic coupler

noun
1.
(computing) a device converting computer-data signals into acoustic form for transmission down a telephone line, through the handset microphone See also modem
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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acoustic coupler in Technology

hardware, communications
A device used to connect a modem to a telephone line via an ordinary handset. The acoustic coupler converts electrical signals from the modem to sound via a loudspeaker, against which the mouthpiece of a telephone handset is placed. The earpiece is placed against a microphone which converts sound to electrical signals which return to the modem. The handset is inserted into a sound-proof box containing the louspeaker and microphone to avoid interference from ambient noise.
Acousitic couplers are now rarely used since most modems have a direct electrical connection to the telephone line. This avoids the signal degradation caused by conversion to and from audio. Direct connection is not always possible, and was actually illegal in the United Kingdom before British Telecom was privatised. BT's predecessor, the General Post Office, did not allow subscribers to connect their own equipment to the telephone line.
(1994-11-08)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Difficulty index for acoustic coupler

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Word Value for acoustic

12
15
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