Meaning of PREEMPHASIS in English
/pree em"feuh sis/ , n. Electronics.
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.
Also, pre-emphasis . Also called emphasis, predistortion, preequalization .
[ 1940-45; PRE- + EMPHASIS ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012