OpeNoise

Arpa Piemonte

About this app

OpeNoise is a real-time noise level meter.

TECHNICAL SPECIFICATIONS:
- Real-time A-weighted sound pressure level measurement
- Minimum and maximum level
- Third octave and FFT analysis
- Data saving in text file
- Calibration
- Displaying measurements on a map
- Metadata compilation
- Sharing calibration and measurements with the OpeNoise community


TERM OF USE
This app is not intended for professional use, it does not necessarily guarantee an accurate noise measurement.
Since each device has a different response to noise, a comparison with a professional noise level meter in the measurement dynamic range is required.
The utilization of the app requires adequate technical knowledge and skill; an extemporary measurement might not be correct.
The calibrations and measurements sent to the OpeNoise community will be used for statistical purposes only and cannot be used in any way to verify compliance with legal limits.

CREDITS
Developers: Arpa Piemonte (Regional Agency for the Protection of the Environment of Piedmont - Italy - www.arpa.piemonte.it).
The code is open source under GNU v.2 license or later, the code is on GitHub: https://github.com/Arpapiemonte/

Ratings and reviews

Very functional app with the capability to calibrate the sensitivity. I've reinstalled the app on a Redmi Note 10S and Xperia 10V, and the microphone permission is being prompted correctly. Recommended!

It works as advertised. This is an all-around good app, and there's not much more to say. Negative sides: You most likely need to calibrate it to the ambient sound level. Positive sides: It's surprisingly versatile, it can be calibrated, and it does indeed graph sound volumes.

This app is brilliant, the best by far! It is the only one I have found that can display dB(A) and not just dB(Z). The wide choice of display options is greatly appreciated. I see a lot of people leaving negative reviews on here complaining about the need for calibration, ALL APPS NEED CALIBRATION if they claim otherwise, they are lying! My only wish is to be able to create custom LAeq times as seeing 3, 5, or 15min averages is very valuable! If you need a sound level app, this is it. 5 starts!

What's new

- added measurements visualization on a map
- added the possibility to share the calibration value with the community
- added the possibility to share own measures with the community