A device that extracts the original information-bearing signal from a modulated carrier wave. Used in computing and telecommunications.
This demodulator converts digital signals to analog.
変調装置 is a modulator, which encodes information onto a carrier wave, while 復調装置 is a demodulator, which recovers the original information from the modulated signal.
modem
Compound of 復調 (demodulation) and 装置 (device, apparatus).