Decibel Volume Meter в Android Market

Decibel Volume Meter (v. 1.0) Разработано Darren Gates

This is a fun way to measure audio volumes in your environment. The app shows the approximate dB (decibel) level, with the average, min, and max values, with calibration options.

This is intended for personal (not industrial or professional) use only. The app provides relative, approximate values of ambient volume.