Every music teacher should have a decent DB Meter available to them and with today’s phones there’s of course an app for that!
Decibel 10th: Pro Noise Meter, Sound Pressure Level is a good app to have in your arsenal of apps to help you out with seeing how loud your environment is, as well as checking to see what frequencies are bouncing around the room!
Make sure you visit the settings menu today and hit that Restore Purchases button today as that will get rid of the ads.
I have one one qualm with the app and that is the fact that it only works in portrait mode and I really don’t like that. But hey, it’s free:)