XCEL 102

BLUE BIRD CORPORATION Pdf Download PDF Report

Exterior Noise Test

Accelerating from Constant Speed

Date : 2003-09-09
Personnel : R.C. and S.C.
Temperature (°F) : 69 Humidity (%) : 75
Wind Speed (mph) : 5 Wind Direction : nne
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: false checked by S.C.
Exterior Ambient Noise Level dB(A): 43.9

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 76.5 1 79.8
2 76.5 2 79.9
3 76.8 3 79.9
4 76.7 4 80.6
5 76.7 5 80.6
Average of two highest actual noise levels = 76.8 dB(A) Average of two highest actual noise levels = 80.6 dB(A)