Characteristic types of sound heard in a given environment at a given time.

Room tone

Raw atmosphere sound of a room, including electrical hums, traffic background, weather sound, etc…

On the air

Sound transmitted by Tvs, radios, etc in film space with no subject to the natural law of sound propagation.

Establishing sound

Sound that establishes, from the very beginning of a scene, the general character of the surrounding


E.A.S. or Elements of Auditory Settings refer to the punctual sound residing in the ambient sounds.