ENVIRO 500

ALEXANDER DENNIS INC. Pdf Download PDF Report

Exterior Noise Test

Accelerating from Constant Speed

Date : 2005-06-24
Personnel : R.C. and S.C.
Temperature (°F) : 87 Humidity (%) : 71
Wind Speed (mph) : 5 Wind Direction : sw
Barometric Pressure (in.Hg) : 30.18
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.C.
Initial Sound Level Meter Calibration: false checked by S.C.
Exterior Ambient Noise Level dB(A): 43.4

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 78.8 1 81.8
2 80.0 2 77.2
3 77.8 3 78.6
4 80.3 4 79.6
5 80.7 5 77.6
Average of two highest actual noise levels = 80.5 dB(A) Average of two highest actual noise levels = 80.7 dB(A)