الآراء
0:42
Best Sound Meter App? - Android
5:34
How to measure decibels with the NIOSH app
2:01
Online Decibel Level Meter
0:16
Decibel meter - noise meter for free
0:17
Sound meter : Decibel Meter-Noise Detector
0:51
Decibel (Sound Meter) - Free Android App
4:08
How to measure noise level using your smart phone
9:04
How to measure noise with the Decibel Meter app
