What term denotes the process of extracting the information-bearing signal from a modulated carrier?

What term denotes the process of extracting the information-bearing signal from a modulated carrier?

• A. Demodulation
• B. Detection
• C. Filtering
• D. High-pass

Answer: (A)

Demodulation is the process of recovering the original information-bearing signal from a modulated carrier. In radio systems, the carrier is modulated to carry the message, and the demodulator at the receiver undoes that modulation to retrieve the transmitted signal. Filtering alone shapes or removes parts of the spectrum and doesn’t restore the message by itself, and high-pass is simply a type of filter. Detection can refer to sensing a signal or extracting an envelope in some cases, but the standard term for reclaiming the information from a modulated carrier is demodulation.

Demodulation is the process of recovering the original information-bearing signal from a modulated carrier. In radio systems, the carrier is modulated to carry the message, and the demodulator at the receiver undoes that modulation to retrieve the transmitted signal. Filtering alone shapes or removes parts of the spectrum and doesn’t restore the message by itself, and high-pass is simply a type of filter. Detection can refer to sensing a signal or extracting an envelope in some cases, but the standard term for reclaiming the information from a modulated carrier is demodulation.