E-Bus 22 T

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Exterior Noise Test

Accelerating from Standstill

Date : 2001-04-26
Personnel : S.C., E.D. & B.S.
Temperature (°F) : 57 Humidity (%) : 24
Wind Speed (mph) : 5 Wind Direction : WNW
Barometric Pressure (in.Hg) : 30.27
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): 55.8

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 64.1 1 64.2
2 63.4 2 64.3
3 63.0 3 64.3
4 64.1 4 64.1
5 64.0 5 64.2
Average of two highest actual noise levels = 64.1 dB(A) Average of two highest actual noise levels = 64.3 dB(A)