Ever wonder how loud the noise really is and if it could be damaging your hearing? Sound Meter App For Android is a very useful sound test and noise meter (SPL) tool for decibel meter to show audio decibel values by measure the environmental noise, it displays measured dB values in different forms. This Sound Decibel Meter App is one of the best Noise detector, Sound Meter & Decibel meter db meter is simple, powerful audiometer it uses phone microphone to measure surrounding noise decibels (db)