What is a Room Tone?

Room tone is the natural background sound present in a space when no intentional audio is being produced. It includes subtle ambient noises such as air movement, distant environmental sounds, electrical hum, or the natural acoustic character of the room.

In film, television, and audio production, engineers often record a short segment of room tone after a scene is completed. This recording captures the ambient sound of the location so it can be used later during editing.

Room tone is useful in post-production because it helps create smooth audio transitions between cuts or edits. By filling silent gaps with the recorded ambient sound, editors can maintain a consistent and natural-sounding audio environment throughout a scene or recording.