Sound Meter - Simple Detector のアプリ分析 1月11日

Simple Sound Meter App. - show decibels - calibration - graph - history Want to measure sound level? Try Sound dB Meter! This is simple sound decibel meter app (iOS) Easy to use and interesting app. Levels of Noise in decibels (dB) 20 dB - Very quiet, almost feel nothing 40 dB - Quiet, like soft whispers 50 dB - Quiet office 60 dB - Ordinary indoor conversations 80 dB - Noisy, may hurt the nerve 90 dB - Very noisy, nerve damage 100 dB - Increased noise, hearing damage 120 dB - Unbearable (Noise Sound Decibel Meter / Simple detector) (include Ad Version) [Privacy policy] https://sites.google.com/view/jo-sound-meter .