theres an app for the iphon that measures DB, or SPL if you will. it measures the Sound Pressure Level/ Decibals of an object, such as a stero system, a cars exhaust, or a normal conversation. i was wondering if anyone knew what the capabilities of the blackberry bold's microphone was. im hoping that itll interperate up to 150db acurately. if anyone has an accurate response, please let me know.