U.L.F.

CHAMPION BUS, INC./THOR INDUSTRIES Pdf Download PDF Report

Exterior Noise Test

Accelerating from Constant Speed

Date : 2012-05-24
Personnel : M.R., T.S. & T.G.
Temperature (°F) : 72 Humidity (%) : 78
Wind Speed (mph) : 6 Wind Direction : ESE
Barometric Pressure (in.Hg) : 30.07
Verify that microphone height is 4 feet, wind speed is less than 12 mpg and ambient temperature is between 30 F and 90 F: true checked by T.S.
Initial Sound Level Meter Calibration: true checked by T.S.
Exterior Ambient Noise Level dB(A): 40.4

Accelerating from Constant Speed
Curb (Right) Side
Accelerating from Constant Speed
Street (Left) Side
Run # Measured Noise Level dB(A) Run # Measured Noise Level dB(A)
1 72.3 1 73.9
2 72.6 2 74.0
3 71.8 3 75.1
4 73.2 4 74.8
5 72.0 5 75.3
Average of two highest actual noise levels = 72.9 dB(A) Average of two highest actual noise levels = 75.2 dB(A)