51Թ

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preemphasis

or -··

[ pree-em-fuh-sis ]

noun

Electronics.
  1. a process of increasing the amplitude of certain frequencies relative to others in a signal in order to help them override noise, complemented by deemphasis before final reproduction of the signal being received.
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51Թ History and Origins

Origin of preemphasis1

First recorded in 1940–45; pre- + emphasis

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