Pocket Sound & Speed Meter

Current sound level

--

dB est.

Ready

306085100120

Live sound history

Last 60 seconds

Record noise

Not recording

Situation / train / place Location or route Test duration Notes

Average--

Maximum--

Minimum--

Time00:00

Current GPS speed

--

km/h

Ready

050100150200+

GPS off. Speed works best outdoors or near a window.

Live speed history

Last 5 minutes

Record speed

Not recording

Trip / vehicle / train Route Recording duration Display unit Notes

Average--

Maximum--

Minimum--

Distance--

Time00:00

Accuracy--

Split screen

Sound + speed together

Noise

--

dB est.

Ready

Speed

--

km/h

Ready

Start both sensors to compare train noise with speed.

Record sound + speed

Not recording

Journey / situation Route or place Recording duration Notes

Avg dB--

Max dB--

Avg speed--

Max speed--

Distance--

Time00:00

Saved records

0 saved

Sound calibration

Improves comparisons

For the best sound results, compare this app with a real sound level meter or a trusted calibrated app. Enter the real reading below while the microphone is running, then tap calibrate.

Known dB reading

Default calibration offset: +100 dB.

Privacy note: this records sound readings and speed readings only, not audio. It does not save GPS coordinates. Data is saved in this browser on this phone using local storage. For iPhone, open it from an HTTPS website and allow microphone and location access. Keep the screen awake while recording long trips.