Especially when, for supporters, the noise may be an essential part of the experience, "adding a frisson of elemental thunder to the whole drama", said Dr Mike Fillery, managing director of Fillery Acoustics, Milford.
was one of nine experts discussing such issues at the Institute Of Acoustics Motorsport Noise meeting at Silverstone Circuit on March 18.
However, a problem "with static testing is that it is difficult to police properly and is open to cheating by competitors," said Mike
• Consistent testing of vehicles requires regular training and proper equipping of noise officers.
Yet, "no matter how correct or how fair the testing, there can be considerable pressure upon race officers to turn a blind eye if a significant number of competitors fail their noise test".
• Cars don't get noisier as they get faster: Mike referred to the M Sc project of student Robin Lyons, who investigated the variation in noise levels of cars as they travelled along the straight at different race circuits.
In 1996, Mike carried out a survey for the Association of Motor Racing Circuit Owner (AMRCO) on the practice of noise control on their circuits throughout England.
This enabled Mike
to take many noise readings.
• "One interesting finding was that for most events not involving major sponsorship, that means most club and amateur events, the noise level from cars increased with the finishing position.
That is, the faster a competitor was, then the quieter was his
This can be explained by the observation that the faster cars would be the better prepared with higher budgets and so their exhaust systems would be newer and in good order."
suggested further investigation was needed on whether it was the level or frequencies of motorsports noise that "really bugs noise complainants".
also pondered the best way to set up "effective means of dialogue between noise complainants and motorsports".
About 80 delegates attended the meeting
Dr Mike Fillery
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