a set of equipment that encodes an analogue speech or video signal into digital form for transmission purposes and at the receiving end decodes the digital signal into a form close to its original
Word origin
C20: from co(de) + dec(ode)
codec in American English
(ˈkoʊˌdɛk)
noun
an integrated circuit that converts analog data into digital and vice versa, used as to transmit images or sounds