“Green noise” is an informal audio term used to describe a type of filtered noise that emphasizes midrange frequencies often perceived as natural or mellow. Like other noise “colors” (white, pink, brown), it is synthesized by shaping random signals to a desired spectrum. People use noise tracks to create a stable acoustic background in offices, cafés, and study environments where intermittent sounds can pull attention away.
Choosing a noise color is mainly about preference and context. Listening volume, headphone comfort, and the nature of the task all influence whether a background noise feels helpful or distracting. Short trials with different tracks can help a person identify what works best for their work style.