What term is often used interchangeably with demodulation?

The term "detection" is frequently used interchangeably with demodulation because both processes involve the retrieval of desired information from a modulated carrier wave.

Demodulation refers specifically to the process of extracting the original information signal from a modulated carrier wave after transmission. In this context, detection describes the act of identifying and retrieving the baseband signal which was encoded onto the carrier for transmission.

This extraction is essential for the accurate reproduction of the original signal at the receiver's end, making detection an integral part of the demodulation process. Understanding this relationship helps clarify how information is transferred over communication systems and illustrates why detection is often associated with demodulation.

The other terms, while related to signal processing, do not accurately represent the interchangeability with demodulation. Signal enhancement relates to improving the quality of a signal, transmission involves sending a signal from one point to another, and filtering refers to the removal of unwanted components from a signal rather than the process of recovering the original information. Hence, these concepts are distinct from demodulation and detection.