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Old 09-29-2007 | 03:50 PM
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pe reivers
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From: Arcen, , NETHERLANDS
Default RE: How do you test Engine DB's Properly
We measure at 7 meters distance, officially the mean of four, plane and meter at 1.2m height.
Max wind speed three m/sec for valid measurements, no reflecting objects near the site, and measure over short grass.
At this distance we have 80 dB(a) max, and a few centimeters more or less than 7 meters do not affect the measurements much.
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