What is the definition of room tone in editing?

• A. A loud ambient track used for suspense
• B. A short ambient audio sample used to smooth transitions and fill gaps between cuts.
• C. A sound effect library
• D. A music bed only for intro

Answer: (B)

Room tone is the quiet, consistent ambient sound of the recording space captured during filming. It represents the natural background (air, HVAC, distant noises, room reflections) at the same microphone level as the dialogue.

Editors use a short sample of room tone to smooth transitions and fill gaps between cuts. When you splice together clips, small pauses or changes in background noise can make the edit feel jarring. Dropping in a bit of room tone keeps the noise floor steady and makes the edit feel seamless, almost invisible to the listener. It also helps when applying noise-reduction or compression, providing a reference bed of ambient sound to blend with.

So the best description is a brief ambient audio sample used to bridge edits and maintain consistent background ambience. It’s not meant to be a loud suspense cue, it isn’t a general sound effects library, and it isn’t a music bed for an intro.