decoder
n.a person or a machine that changes a secret code or a signal into something you can understand. You use this when you need to translate hidden information into plain language.
n.a person or device that converts encoded data or signals into a comprehensible form. Often refers to the process of translating complex information into simpler terms for a general audience.
“The decoder translates the signal into sound.”
“The journalist acted as a decoder for the technical report, explaining the complex findings to the public in simple terms.”
“In the realm of digital communication, a sophisticated decoder is essential for processing the encrypted data streams that modern satellites transmit across the globe.”
From decode + -er.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.