ENVIRO 500

ALEXANDER DENNIS INC. Pdf Download PDF Report

Exterior Noise Test

Accelerating from Constant Speed

Date : 2008-03-06
Personnel : SC and ED
Temperature (°F) : 41 Humidity (%) : 53
Wind Speed (mph) : 4 Wind Direction : ssw
Barometric Pressure (in.Hg) : 30.15
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 SC
Initial Sound Level Meter Calibration: false checked by SC
Exterior Ambient Noise Level dB(A): 44.1

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 82.1 1 84.5
2 81.7 2 84.3
3 82.0 3 83.7
4 82.7 4 87.2
5 82.7 5 85.6
Average of two highest actual noise levels = 82.7 dB(A) Average of two highest actual noise levels = 86.4 dB(A)