D40LFS

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Exterior Noise Test

Accelerating from Standstill

Date : 1991-12-20
Personnel : B.L. & JU.K.
Temperature (°F) : 32 Humidity (%) : 48
Wind Speed (mph) : 2 Wind Direction : SW
Barometric Pressure (in.Hg) : 28.69
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): 34.6

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 71.9 1 73.0
2 71.0 2 72.5
3 70.6 3 72.9
4 4
5 5
Average of two highest actual noise levels = 71.5 dB(A) Average of two highest actual noise levels = 73.0 dB(A)