VI HYBRID-ELECTRIC

ORION BUS INDUSTRIES Pdf Download PDF Report

Exterior Noise Test

Accelerating from Standstill

Date : 2001-05-09
Personnel : S.C., E.D., and B.S.
Temperature (°F) : 70 Humidity (%) : 43
Wind Speed (mph) : 5 Wind Direction : nne
Barometric Pressure (in.Hg) : 30.24
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: true checked by S.C.
Exterior Ambient Noise Level dB(A): 44.7

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 75.2 1 76.7
2 75.3 2 76.9
3 75.4 3 76.8
4 75.3 4 76.7
5 75.4 5 76.8
Average of two highest actual noise levels = 75.4 dB(A) Average of two highest actual noise levels = 76.9 dB(A)