CNG LFS 40

NOVA BUS, DIVISION OF VOLVO GROUP CANADA Pdf Download PDF Report

Exterior Noise Test

Accelerating from Constant Speed

Date : 2013-09-26
Personnel : S.R., T.S., E.D. & R.S.
Temperature (°F) : 67 Humidity (%) : 57
Wind Speed (mph) : 3 Wind Direction : E
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 S.R.
Initial Sound Level Meter Calibration: true checked by T.S.
Exterior Ambient Noise Level dB(A): 42.5

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 72.8 1 72.9
2 70.9 2 70.5
3 73.1 3 71.3
4 73.1 4 70.9
5 72.4 5 72.2
Average of two highest actual noise levels = 73.1 dB(A) Average of two highest actual noise levels = 72.6 dB(A)