Sound Meter PRO

Sound Level Meter is a tool of the 4th set of Smart Tools collection (noise).
REMEMBER !! The micro phone was calibrated on the human voice (300-3400Hz, 40-60dB), the maximum value is Limited. The loud noise (100 + db) can not be recognized: Moto Droid (max.100) Galaxy S (81dB) Galaxy S2 (98dB) ...
Sound Level Meter uses your phone mic to measure the ambient noise in decibels.
See photos 4 and 5. Many devices were calibrated by a real indicator of the level meter level dB (A).