Smart City
Live Noise Level Visualisation Display in Tallinn
The challenge
The problem to solve
Tallinn Urban Planning Department needed to communicate live noise levels to residents and passers-by at a noise-sensitive location. The display had to connect to a certified noise measurement microphone, show the live decibel value, indicate whether the level was within permitted limits, and be understandable to both adults and children — including those unfamiliar with decibel scales.
The solution
What Ampron delivered
Ampron supplied a compact DS-960×640-P8 weatherproof LED message board connected to the certified noise microphone via Ampron's software communication protocol. The display shows the live noise level in dB, a colour-coded status (green = within limits, yellow = slightly above, red = above limit) and a visual smiley indicator to convey status intuitively across age and language groups. Delivered 2019.
Outcomes
Results
- ✓ Live certified noise level data displayed in real time at the measurement site
- ✓ Three-state colour coding — green/yellow/red — immediately communicates compliance status
- ✓ Emoji/smiley indicator adds intuitive comprehension for all audiences including children
- ✓ Integration completed with certified measurement microphone via standard protocol
Hardware
Products used in this project
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