I also posted this in the Commuting Section. Slvoid made a wax model of an ear, fitted with a decibel meter, and blew a 25 mph stream of air over it. Average of 90 dbA. And then: Ok, so riding with a sound meter zip tied to my messenger bag a-la radio style on my way home yielded an average dBA of 96.2, low of 58, high of 112.

--A