noise filtering

Noise filtering is the process of removing unwanted signals or interference from data, audio, images, or other information.

In audio engineering, noise filtering eliminates hiss, hum, or background sounds: The software's noise filtering cleaned up the old recording.

In signal processing and electronics, it separates meaningful data from random fluctuations.

The term extends to any systematic removal of irrelevant information: Her inbox rules provide noise filtering for work emails.