U.L.F.

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

Exterior Noise Test

Accelerating from Standstill

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 71.2 1 73.9
2 72.4 2 73.0
3 70.1 3 70.4
4 69.7 4 70.8
5 69.3 5 70.7
Average of two highest actual noise levels = 71.8 dB(A) Average of two highest actual noise levels = 73.5 dB(A)