How the test works
Measure reaction time to a short audio cue. Enable sound, wait for the beep, then press the button or Space.
How the score is calculated
Reaction time is the median of the valid measured delays from the presented signal to the first accepted response, reducing the effect of one unusually fast or slow trial.
Measurement limits
Sound Reaction measures the path from an audio cue to your input, so speaker or headphone latency can shift the whole result. Keep one output device and volume level for comparisons, and avoid Bluetooth changes mid-session. Close unrelated audio applications if they can delay or interrupt the cue.
Sources and editorial notes
The method uses Pointer Events, Keyboard Events and the monotonic Performance API clock. Content is reviewed by CPS-TEST.ONLINE editors.
Published: 2026-07-11 · Updated: 2026-08-12 12:16:16