What is the Sound Meter - Decibel meter & Noise meter application, how does it work?

According to the introduction of Tools Dev, Sound Meter - Decibel meter & Noise meter is a Tools app on the Android platform. There is currently a 2.1.7 version released on Feb 26, 2020, you can see the details below.

Sound Meter - Decibel meter & Noise meter is also known as a decibel meter, sound level meter, noise detector. It is a helpful app to detect sound and noise from your surroundings.
 
This app provides accurate measurements for users to detect any subtle sound. Any slight change in sound will be shown in a chart with a waveform. Instantly turn your device into a real sound level meter.
 
Functions:
- Display real-time dB in a dial and waveform chart to see change
- Display time of measurement
- Display minimum, maximum and average dB value
- Display status according to the real-time dB
- Toggle the black or white theme
- Calibrate for each different device
 
11 Levels of Noise:
120dB: thunder
110dB: rock music
100dB: subway train
90dB: factory
80dB: busy street
70dB: busy traffic
60dB: conversation
50dB: quiet library
40dB: quiet park
30dB: whisper
20dB: leaves fall
 
This sound decibel meter, sound level meter, noise detector is a popular tool, which has helped tens of thousands of people to detect noises to protect themselves from excessive noise exposure. Download our app, you will like it.

* Fix bugs reported by users