AH-28

CHANCE COACH, INC. Pdf Download PDF Report

Exterior Noise Test

Accelerating from Constant Speed

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: false 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 76.6 1 81.3
2 77.8 2 77.7
3 76.1 3 77.5
4 76.3 4 79.5
5 77.6 5 80.9
Average of two highest actual noise levels = 77.7 dB(A) Average of two highest actual noise levels = 81.1 dB(A)