Digital Decibel Volume Meter в Android Market

Digital Decibel Volume Meter (v. 1.0) Разработано Darren Gates

This digital decibel volume meter (dB/SPL meter) shows you the approximate ambient decibel level, including min/max/average readings, and an easy-to-view light display of the dB levels.

Advanced options include reset/stop/start controls, multiple settings channels, and slow/fast response. You can calibrate using Trim, too!