â–’â–“ ♬ Sound Meter ¬â™©â–“â–’. ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔. Professional sound level meter for your device. It measures loudness or sound pressure in decibels. Features: ───────. Direct reading in dB. 0 to 120dB+ range. Fast meter response. Max/min values display. Selectable falloff speed. 5% max error A and C weighting method.