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

Great and complete app! I still to calibrate it but everything seems working well. Extremely appreciated the privacy respect and the source on git ! Grazie agli sviluppatori, ottimo lavoro :)

If "Save Lzeq 1/3 octaves levels" and "Save Lzmin 1/3 octaves levels" are checked before the start of the test. The recorded data will be very long. When you open the recorded txt file in the app, when a row of data is too long, I think it is best not to enable automatic word wrapping on the narrow screen of the mobile phone.

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.

What’s new

- performance improvement and minibug resolution