![Free Sound Level Meter App from CDC's National Institute for Occupational Safety and Health | Noisy Planet Free Sound Level Meter App from CDC's National Institute for Occupational Safety and Health | Noisy Planet](https://www.noisyplanet.nidcd.nih.gov/sites/noisyplanet/files/cell-phone.jpg)
Free Sound Level Meter App from CDC's National Institute for Occupational Safety and Health | Noisy Planet
Download Sound Level Meter Pro - Decibel Noise meter for Android - Sound Level Meter Pro - Decibel Noise meter APK Download - STEPrimo.com
![NIOSH on Twitter: "On International Noise Awareness Day, download the free @NIOSHNoise Sound Level Meter app to learn if your workplace environment is too loud and if it's hazardous to your hearing. NIOSH on Twitter: "On International Noise Awareness Day, download the free @NIOSHNoise Sound Level Meter app to learn if your workplace environment is too loud and if it's hazardous to your hearing.](https://pbs.twimg.com/media/EWZRMP6X0AEfnkB.jpg)
NIOSH on Twitter: "On International Noise Awareness Day, download the free @NIOSHNoise Sound Level Meter app to learn if your workplace environment is too loud and if it's hazardous to your hearing.
![File:Noise levels inside cabin during takeoff using NIOSH Sound Level Meter app - Boeing 320.png - Wikimedia Commons File:Noise levels inside cabin during takeoff using NIOSH Sound Level Meter app - Boeing 320.png - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/a/ae/Noise_levels_inside_cabin_during_takeoff_using_NIOSH_Sound_Level_Meter_app_-_Boeing_320.png)