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MX, SX & Off-Road Discussions
General Moto | Off-Topic Posts
Noise Problem: The AMA is a bunch of morons
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[QUOTE="Tony Eeds, post: 1174193, member: 32023"] All sound can be described as fitting on a curve that generally describes a bell. C range is a wider range of sound than A range, but A range replicates and weights the range to more closely match the range of human hearing. C picks up a portion of the high range as well as the low range, so any ring-a-ding will set off the meter as well as the 4 stroke you are wringing your hands about. C range is wide enough to be impractical according to Chris. As I said, his partner derived the criteria and wrote the rule. Additionally, he has a PhD in acoustics assuming my CRS isn't getting to me. Sure the 4 stroke sounds louder, and the sound carries farther, but that is a result of exhaust velocity, frequency, and many more variables that make the discussion rather mute. I just had the class last week and have a years worth of acoustics in school myself. Post up your charts and I will get Chris to look at them. ;) [/QUOTE]
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MX, SX & Off-Road Discussions
General Moto | Off-Topic Posts
Noise Problem: The AMA is a bunch of morons
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