Sony Patents a System That Shakes Cars to a Precise Vibration Target
Sony has filed a patent for a device that clamps onto a car from the outside and shakes it to a precise, pre-chosen vibration pattern, automatically correcting itself until the car's body vibrates exactly as intended.
What Sony's external car-vibration control actually does
Ever tried to tune a guitar by ear and kept overshooting the right note? Sony's patent is solving a similar problem, only for entire cars.
The idea is a vibration machine that presses against a vehicle's body from the outside and shakes it. You pick a target pattern of vibration, and the system watches what the car is actually doing. If the car's response doesn't match what you asked for, the machine adjusts its output and tries again, repeating that loop until the real vibration and the target line up.
Why would you want to do that? The patent doesn't say explicitly, but the most obvious uses are testing a car's structure in a lab, or delivering a physical rumble experience tied to media or games inside the cabin. Sony has a long history in both entertainment and professional audio, so a system that can precisely choreograph what a parked car feels like is a credible place for them to work.
… generates an adjustment vibration signal for making the vehicle body vibration signal coincide with the target vibration signal, and updates the drive signal on the basis of the adjustment vibration signal …
Translation: The system constantly measures the car's actual shaking and tweaks its output until the movement is exact.
How the feedback loop corrects the car's vibration in real time
The patent covers a vibration control apparatus made up of two main parts working together.
First, a vibration signal selection unit picks the target: a stored waveform that describes exactly how the car should vibrate over time, like a recording of a specific engine rumble, road texture, or synthesized effect.
Second, a drive signal generation unit does the heavy lifting:
- It sends a drive signal to an external vibration device that physically contacts the car's body.
- It reads back a vehicle body vibration signal, a real-time measurement of how the car is actually moving.
- It compares that measurement to the target, computes an adjustment vibration signal (the correction needed to close the gap), and updates its output.
- It repeats this loop continuously until the measured vibration matches the target waveform.
This is a classic closed-loop control system (the same general principle used in cruise control or a thermostat), applied to physical vibration. The novelty here is doing it with an external actuator pressing on a vehicle body rather than something built into the car, which means the system could work on any car without modifications.
What this means for vehicle testing and entertainment
For automotive engineers, a system like this could simplify shake-table-style testing of vehicle structures. Instead of expensive fixed rigs, a portable external actuator that self-corrects to a precise target waveform is much more flexible.
For Sony's entertainment business, the more interesting angle is experiential: a device that makes a parked or stationary car vibrate in sync with a film, game, or music track, with enough precision that the feeling matches the sound. Sony's ongoing filings across haptics and spatial audio suggest the company is treating physical sensation as a serious complement to its audio and visual products. If this technology matures, it could show up in theme parks, driving simulators, or home theater setups built around a vehicle.
This is the 19th Sony filing in input and haptics we've tracked since May, adding to work like one restoring lost touch signals and one for self-calibrating sticks.
Anyone who has tried to recreate a specific physical feeling on demand knows how quickly the body notices when something is slightly off. When a machine tries to shake a car in a precise, repeatable pattern, the car's own weight and stiffness push back, and what the occupant actually feels drifts from what was intended.
That gap has real costs. Theme parks, automotive testing labs, and in-car wellness applications all depend on delivering the same sensation reliably, every time. A system that cannot close the loop between intention and outcome cannot be trusted at scale.
Sony's approach, having the system continuously listen to what the car is actually doing and adjust until it matches the original target, is proportionate to that problem. A correction loop is exactly the right tool when the obstacle is a physical mismatch that shifts every single time.
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The drawings
32 drawing sheets from US 2026/0264108 A1 · click any drawing to enlarge
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