E500

ALEXANDER DENNIS INC. Pdf Download PDF Report

Exterior Noise Test

Accelerating from Constant Speed

Date : 2015-04-16
Personnel : S.R., E.D. & M.H.
Temperature (°F) : 50 Humidity (%) : 28
Wind Speed (mph) : 9 Wind Direction : ESE
Barometric Pressure (in.Hg) : 30.4
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 S.R.
Initial Sound Level Meter Calibration: true checked by
Exterior Ambient Noise Level dB(A): 46.3

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 81.3 1 79.3
2 80.0 2 79.0
3 80.4 3 80.2
4 80.0 4 79.9
5 80.1 5 80.0
Average of two highest actual noise levels = 80.9 dB(A) Average of two highest actual noise levels = 80.1 dB(A)