Track Impulse delivers 8ms audio output latency via ASIO — with an average end-to-end pipeline of just ~18ms. Fast enough to use as a real driving aid. Close enough to reality to feel genuinely believable. Free to use until July 1st, 2026.
At 200 km/h (124 mph) you're travelling 55.6 metres per second. A 140ms delay means you're already 7.78 metres past the point of feedback before your shakers fire.
That's too slow to be a genuine driving aid — but it's also too slow to feel real. Your brain knows the feedback doesn't match what just happened. It feels like a gimmick because it is one at that latency.
Track Impulse delivers 8ms ASIO audio output latency with an average end-to-end pipeline of around 18ms — processing iRacing's 360Hz sub-sample data directly at the hardware level. No game overlay. No DSP chain. No compromises.
What you feel
Continuous surface texture driven by shock velocity. Smooth tarmac, rough asphalt, and dirt surfaces each have a distinct signature.
Per-corner impact events from kerbs, bumps, and compressions. Feel which tyre hits the ripple strip — not just that something happened.
Uses iRacing's native rumble pitch telemetry for accurate kerb frequency. The shaker literally plays the kerb's own acoustic signature.
RPM-driven harmonic frequency that shifts as you rev through the range. Idle feels different to full throttle, and gear changes punctuate it.
Per-corner lock detection using individual wheel speed sensors. Feel which specific wheel is overbraking — front-left vs front-right.
A sharp transient pulse on each upshift and downshift. Configurable intensity, frequency, and duration to match your preferred feel.
More than a driving aid
Low latency doesn't just help competitive drivers — it changes how the whole experience feels. When feedback is delayed by 140ms your brain registers the mismatch. You feel a bump half a second after you saw it. The engine rumble shifts a beat after the gear change. It's unconvincing, and after a while you stop noticing it at all.
When feedback arrives in 8ms, that mismatch disappears. Kerb strikes feel sharp and physical. Road texture feels continuous rather than intermittent. The engine has weight to it. Your brain stops processing it as "haptic feedback from software" and just accepts it as the car.
Whether you're chasing lap times or just trying to feel more connected to what you're driving, that difference is something you notice immediately — and miss the moment you unplug.
Architecture
Direct read of iRacing's telemetry API. No game overlay, no plugin chain, no middlemen. 6 sub-samples per frame for smooth, detailed effects.
360 HzFour independent WheelSynthesiser instances — one per corner — process shock velocity, rumble pitch, wheel speed, and RPM simultaneously across all 6 sub-samples.
48 kHz AudioOutput via ASIO bypasses the Windows audio stack entirely. Latency is dictated by your hardware buffer — 256 samples at 48kHz = 8ms audio output latency.
8ms Audio OutOptimised for Dayton BST-1 (10–80Hz range). Works with any bass shaker driven by a 4-channel amp. LF, RF, LR, RR independently mapped.
~18ms avgAudio interface
Track Impulse outputs audio via ASIO — the professional audio standard that bypasses the Windows audio stack entirely. If your sound card supports ASIO, you're ready to go right now. We recommend the Behringer UMC404HD as the go-to entry-level option — native ASIO driver, 4 outputs, and widely available. Other devices are supported via the free ASIO4ALL wrapper.
4-in/4-out USB interface with native ASIO driver included. ~4-5ms reported latency, 4 balanced TRS + RCA outputs — perfect for driving four shaker channels directly. Around $100 AUD and widely available.
If your audio interface supports ASIO natively (Creative, Focusrite, MOTU, RME, etc.) or via ASIO4ALL, Track Impulse will detect it automatically from the device dropdown.
Don't have native ASIO? ASIO4ALL wraps most WDM audio devices with low-latency ASIO support. Free download, 5-minute setup, works with virtually any Windows sound card.
Recommended shaker
Track Impulse is optimised for the Dayton BST-1 — the community standard for entry-level haptics, with peak response at 40–60Hz, right in Track Impulse's target range.
Any bass shaker connected to a 4-channel amplifier will work. The in-app frequency sliders let you tune each effect to your specific shaker's response curve.
The TD-4 hardware module (coming soon) is our purpose-built USB audio device — pre-tuned, plug-and-play, with no driver setup required.
A purpose-built 4-channel USB audio device designed specifically for Track Impulse. Plug in, select it from the dropdown, and drive. No driver installation, no ASIO4ALL, no buffer tuning. Hardware-optimised for the 10–80Hz bass shaker frequency range with onboard filtering that eliminates the need for an external crossover. Register interest below to be notified at launch.
Register InterestPricing
Track Impulse is in beta and completely free until July 1st, 2026. Sign up now to get full access — and lock in founding member pricing when paid plans launch. No credit card. No limits. No catch.
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