I suggested this some time ago (so you're not the only one asking dumb questions
.. standardisation wouldn't be THAT hardwe just need to make it easy to do... for example have everyone do it outside, at 12'/3m directly behind the bike, 24"/60cm off the ground, and have them run the bike at idle, 2500rpm, and 4000rpm for 3 seconds each, giving noise levels for each. You could upload that data along with an audio recording of the test so people could compare the "tones" as well as the volumes. Then we'd just need to get Robert to set up someplace to store them (or I'd be happy to store it on my site). The tricky part would be everyone who needs it getting a sound level meter, but if you're happy to send yours around (a-la the hole saw) that solves that issue.
Matt
