【實用工具app】Digital Sound Meter FREE|最夯免費app-綠色工廠好玩App

This sound meter use the iphone integrated microphone to display the sound level in decibel.Features:- Display of the average and peak levels with a bargraph and with a numeric LCD display.Works the iPhone 3,4 and 5, the integrated microphone of the first generation of iphone is not recommended you should use the included headset microphone.