05-24-2018, 08:08 PM
I think you're right to be sceptical about that article, Roper. As I noted, the authors had a vested interest. Now I wonder if IPS was the author. I did a bit more searching on the internet and found the same article here, http://www.hearingloss.ca/articles/ridin...ing-loss/. I wonder if it was a press release prepared by an audiologists' association?
Perhaps more helpful is an article in the British Journal of Sports Medicine reporting on a study into hearing loss in Grand Prix motorcyclists. (see http://bjsm.bmj.com/content/bjsports/28/1/35.full.pdf) The following paragraph is relevant:
Quote:It has become increasingly apparent over the past 10-15 years that motorcyclists are exposed to noise levels far in excess of those that would be permitted in an industrial setting' (85 dB(A): Health and Safety at Work Act 19912). This noise arises, not from the machinery, for which adequate controls exist, but from turbulent air flow around the rider's helmet. This low frequency 'wind noise' reaches 90 dB(A) at about 40 m.p.h. and increases linearly with log-10 speed (m.p.h.) to reach levels of 110 dB(A) at 100m.p.h. At 150m.p.h., a not uncommon speed for a Grand Prix motorcyclist, noise levels of the order of 120 dB(A) would be expected.
[url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC539364/]This article cited noise levels of "about 90 dB(A) at 60 km/h and increasing linearly when plotted against the log of speed, to reach 110 dB(A) at 160 km/h".
While there may be problems with the IPS piece and the identical piece I referred to, there does seem to be agreement in more august journals that wind noise is a problem. I think I'm right in saying that hearing damage is cumulative, so Houtman's three times damage from one Stones' concert will be exacerbated by tearing up and down the Blue Ridge Parkway.
I've already got a low level of tinnitus and I'll wear hearing protection in the hope that it won't get worse.
Perhaps more helpful is an article in the British Journal of Sports Medicine reporting on a study into hearing loss in Grand Prix motorcyclists. (see http://bjsm.bmj.com/content/bjsports/28/1/35.full.pdf) The following paragraph is relevant:
Quote:It has become increasingly apparent over the past 10-15 years that motorcyclists are exposed to noise levels far in excess of those that would be permitted in an industrial setting' (85 dB(A): Health and Safety at Work Act 19912). This noise arises, not from the machinery, for which adequate controls exist, but from turbulent air flow around the rider's helmet. This low frequency 'wind noise' reaches 90 dB(A) at about 40 m.p.h. and increases linearly with log-10 speed (m.p.h.) to reach levels of 110 dB(A) at 100m.p.h. At 150m.p.h., a not uncommon speed for a Grand Prix motorcyclist, noise levels of the order of 120 dB(A) would be expected.
[url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC539364/]This article cited noise levels of "about 90 dB(A) at 60 km/h and increasing linearly when plotted against the log of speed, to reach 110 dB(A) at 160 km/h".
While there may be problems with the IPS piece and the identical piece I referred to, there does seem to be agreement in more august journals that wind noise is a problem. I think I'm right in saying that hearing damage is cumulative, so Houtman's three times damage from one Stones' concert will be exacerbated by tearing up and down the Blue Ridge Parkway.
I've already got a low level of tinnitus and I'll wear hearing protection in the hope that it won't get worse.