Giving the Ear the Power To Decide

by Randy Thom

Sound Design often makes the audience feel something about a story, but almost never makes the audience decide something about a story.  That is a weird, arbitrary structural imbalance, and fixing it is the future of sound in film.

by Randy Thom

Movies are full of moments when somebody suddenly knows something they didn’t know a second earlier. A character notices an object, or a place, or a body, or the result of some process, and whatever story they were telling themselves about the world just collapses. Sometimes it’s devastating. Sometimes it’s a relief. Sometimes it’s barely noticeable on the surface. But the basic shape of the moment is always the same: what they’re perceiving runs straight into what they believed, and the belief loses.

I’ve worked on a lot of films where this kind of thing happens, and there are plenty more I wish I’d worked on. One that always comes to mind is The Shining. Shelley Duvall’s character finally looks at what her husband has been typing—page after page of “All work and no play makes Jack a dull boy”—and in one instant she understands exactly how insane he is. No argument. No discussion. Just a look, and everything changes.

Almost all moments like that in movies are carried by images, dialogue, or some combination of the two. We’re very comfortable with that. We trust it. What’s much rarer—so rare that once you notice it, you can’t stop noticing its absence—is a moment of recognition driven entirely by sound effects. Not dialogue. Not music. No language at all. Just the sounds of things in the world doing what they do: machines, impacts, weather, animals, mechanisms, stuff breaking or failing or continuing when it shouldn’t.

Across the history of narrative cinema, seeing has forced characters to rethink reality thousands of times. Hearing, in this very specific non-linguistic sense, almost never does. That imbalance isn’t accidental. It says something about how movies learned to talk to us—and what they still don’t quite trust.

From pretty early on, cinema settled into a kind of sensory pecking order. Images became evidence. Sound became condition. Vision told us what is. Sound told us how it feels to be there.

When synchronized sound arrived, that hierarchy didn’t go away—it just got formalized. Dialogue took responsibility for meaning. Music took responsibility for emotion. Sound effects—everything that wasn’t speech or music—were assigned support duties: realism, atmosphere, tension, danger, continuity.

Sound effects could warn you that something bad might be coming, but they rarely got to confirm that it had arrived. They could make you uneasy, but not settle the question. They could lean on a scene emotionally, but they weren’t allowed to decide what the scene meant.

Narratively, sound effects became preparatory. They got things ready. The image finished the job.

The classic cinematic “aha” moment depends on authority. A character believes one thing, then encounters something that can’t be squared with that belief. There’s no way to unsee it, so something has to give.

In movies, images are allowed to end arguments.

Sound effects almost never are. A sound nearly always leaves wiggle room. You might not know what caused it. You might not know how far away it is. You might not even know exactly when it happened. Even a loud, unmistakable sound often opens up multiple explanations instead of closing them down.

That’s exactly why sound effects are so good at suspense, dread, and anticipation. But it also makes them feel unreliable as carriers of final knowledge—at least within the grammar movies usually use.

Here’s the paradox: the very things that make sound effects powerful are the things that have limited their authority.

Sound doesn’t respect frames. It spills. It overlaps. It arrives early or late. It doesn’t politely label its source. That slipperiness is one of sound’s great strengths—it lets movies suggest offscreen worlds, unseen forces, things that are present but not visible.

But recognition requires commitment. An “aha” moment isn’t just a feeling. It’s a reclassification. Something that used to be safe is now dangerous. Something that seemed innocent is now guilty. Suspicion turns into certainty.

Movies have almost never let sound effects do that work by themselves.

Instead, sound hovers near meaning, building pressure that only images are allowed to release.

There’s also a cultural bias baked into this. In everyday life, hearing counts as weaker evidence than seeing. “I heard something” invites skepticism. “I saw something” demands action. Movies inherited that bias and reinforced it.

When films do let sound effects carry weight, they often hedge. The sound gets repeated. Explained. Paired with a confirming image. The story seems nervous about letting the sound stand on its own.

That nervousness is telling. It suggests that cinema still doesn’t quite trust sound effects with epistemic responsibility—with the job of telling us what’s actually true.

There’s another wrinkle, too. Sound hits the body faster than it hits understanding. Loud sounds trigger reflexes before thoughts. Low frequencies vibrate the chest. Rhythms grab breathing and pulse. Horror movies know this very well.

But fear isn’t recognition.

An “aha” moment requires a mental rewrite. The character has to understand that their earlier understanding was wrong. Movies have learned to associate that kind of knowing with sight.

Sound effects, meanwhile, are treated as forces acting on characters, not as information characters learn from.

Every so often, a film comes close to letting sound cross that line. A mechanical problem is heard before it’s seen. A repeated noise starts to form a pattern. A background sound suddenly takes on a disturbing new meaning.

But almost always, the film pulls back. The sound unsettles, but it doesn’t conclude. Recognition is postponed until the image arrives.

That doesn’t feel like a lack of opportunity. It feels like a reluctance to step over a boundary. Sound effects are allowed to ask questions, but not answer them.

Which leads to a strange situation. Movies today are sonically dense, intricate, carefully designed. Soundtracks are full of detail and intention. And yet sound effects remain narratively conservative.

They’re praised for realism, texture, immersion—for being invisible. One of the highest compliments sound design can receive is that nobody noticed it.

Visual storytelling, on the other hand, is celebrated for moments that stop you cold and force recognition.

So we end up with a medium where sound is everywhere, but rarely decisive.

That imbalance points to a huge, mostly unexplored storytelling territory. What would it mean for a sound effect—not a line of dialogue, not a musical cue—to force a character to confront a contradiction in their beliefs?

Not scare them.

Not unsettle them.

But change what they know.

What kinds of scenes would we get if sound effects were allowed to function as verdicts instead of warnings?

Answering that would require breaking some habits. The sound would have to stand alone, without immediate visual explanation. It would need to be specific enough to narrow interpretation without turning symbolic. And the story would have to live with the consequences—no quick walk-back once the image finally shows up.

Audiences would have to listen differently. Filmmakers would have to trust listening as a way of knowing.

Why hasn’t this happened more often? Partly because images travel more easily across cultures and languages. Sound-based recognition is fragile. It asks for attention, patience, trust.

Partly because the way we teach storytelling is still overwhelmingly visual. “Show, don’t tell” almost always means “show with images.” Sound is treated as enhancement, not structure—even by sound designers ourselves.

Sound is expected to serve the image, not challenge it.

Which is ironic, because cinema is the only major narrative art where sound and image are fused in time. And yet it keeps granting authority almost exclusively to one of them.

That feels less like a law of nature than a habit. And habits can change.

Noticing that movies are full of visual moments of recognition and almost empty of sonic ones isn’t an insult to sound. It’s a diagnosis. Sound effects have been asked to immerse, disturb, seduce, warn. They’ve almost never been asked to decide.

That’s not a weakness. It’s an opening.

It suggests there’s a powerful narrative resource still sitting on the table—not because sound lacks expressive power, but because cinema hasn’t yet learned how to let it speak with authority.

The real question isn’t whether sound effects can produce “aha” moments. It’s what kind of cinema we’d get if they were allowed to.

Walter Murch reminds us of a fantastic example of a sound effect being a revelation to a film character:  Detective Hank Quinlan (Orson Welles) in “A Touch Of Evil.”  Quinlan, a corrupt cop, is on a bridge, walking and talking with his sidekick Menzies, who is concealing a microphone and transmitter that’s being picked up by Vargas, Quinlan’s enemy.

Vargas is secretly following them on foot and listening through his receiver’s small speaker to the self incriminating things Quinlan is saying. When Vargas walks under the archway of the bridge, Quinlan’s voice becomes acoustically amplified by the arch, so loudly that Quinlan hears his own voice reverberating unnaturally around him. He realizes he is being bugged.

The sound doesn’t just unsettle Quinlan. It reclassifies his situation in the story.

He goes from hunter to hunted, from being an authority to being compromised because of what he hears. The image comes later. The sound is what breaks him first.

That’s the rare thing: sound effects not as mood, not as pressure, not as atmosphere—but as proof. True, it is dialog that he’s hearing, his own, but it is dialog playing as a sound effect which, without a very particular kind of acoustic treatment, would not have the same meaning.

What kinds of stories emerge when hearing—not seeing—is the point of no return?

What kinds of characters are shaped by truths that arrive through sound alone?

Those questions are still mostly unanswered.

Which is probably a good sign that they’re worth asking.