D40LFS

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Exterior Noise Test

Accelerating from Constant Speed

Date : 1991-12-20
Personnel : b.l. & j.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: false checked by B.L.
Exterior Ambient Noise Level dB(A): 39.5

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 69.9 1 72.7
2 69.8 2 72.4
3 71.7 3 71.5
4 71.8 4 72.6
5 5
Average of two highest actual noise levels = 71.8 dB(A) Average of two highest actual noise levels = 72.7 dB(A)