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compander

American  
[kuhm-pan-der] / kəmˈpæn dər /
Or compandor

noun

Electronics.

  1. (in a communications path) a combination of a compressor at one point and an expander at another, the compressor reducing the volume of a signal and the expander restoring it.

compander British  
/ kəmˈpændə /

noun

  1. a system for improving the signal-to-noise ratio of a signal at a transmitter or recorder by first compressing the volume range of the signal and then restoring it to its original amplitude level at the receiving or reproducing apparatus

"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

Etymology

Origin of compander

First recorded in 1965–70; com(press) + (ex)pand + -er 1

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.