The Scariest Sound in a Film Can Be the One That Stops
Silence changes what an audience listens for. Try this small viewing experiment to hear the difference.
A corridor looks ordinary until its background sound disappears. You have not seen a monster, but suddenly you are waiting for one. Sound design can direct attention before the image changes.
Listen to the expectation
The BFI's sound-focused film essay explores how audio contributes to a thriller. For your own viewing experiment, choose a tense scene you already know. Notice the ordinary sounds first: footsteps, traffic, ventilation or conversation. Then listen for what drops away.

Editorial image from Blogdel's entertainment collection, used for illustration.
The effect is not simply loud versus quiet. An isolated footstep can become significant because the rest of the room has stopped competing with it. A sudden noise then arrives into a space the soundtrack has prepared.
Invent the opposite version
Imagine the same corridor with cheerful conversation from another room. Or replace the silence with a constant musical warning. Each choice gives the audience a different expectation, even if the picture is unchanged.
This is an interpretation exercise, not a claim that every frightening scene follows one formula. Some films use relentless noise; others withhold explanation. The interesting question is what the sound asks you to anticipate. Once you start hearing that invitation, suspense becomes more than a dark room and an eventual jump.

Editorial image from Blogdel's entertainment collection, used for illustration.
Sources and further reading
References
- Pattern Recognition: using sound to scare at the movies | BFI · primary
- All about film sound and how we restore it | BFI · primary