AH-28

CHANCE COACH, INC. Pdf Download PDF Report

Exterior Noise Test

Accelerating from Standstill

Date : 2000-07-13
Personnel : S.C., E.D. & R.H.
Temperature (°F) : 79 Humidity (%) : 45
Wind Speed (mph) : 4 Wind Direction : Variable
Barometric Pressure (in.Hg) : 29.98
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 B.L.
Initial Sound Level Meter Calibration: true checked by B.L.
Exterior Ambient Noise Level dB(A): 46.5

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 77.6 1 78.4
2 77.4 2 78.3
3 77.6 3 78.3
4 77.4 4 78.4
5 77.4 5 78.4
Average of two highest actual noise levels = 77.6 dB(A) Average of two highest actual noise levels = 78.4 dB(A)