ATTB

NORTHROP GRUMMAN

Interior Noise Test Data Form

Test Condition 1: 80 dB(A) Stationary White Noise

Date 1997-11-04
Personnel B.L. and S.C.
Temperature (°F) 48
Humidity (%) 78
Wind Direction s
Wind Speed (MPH) 4
Barometric Pressure (in.Hg) 29.95
Initial Sound Level Meter Calibration checked by R.L.L.
Interior Ambient Noise Level dB(A) 39.4
Exterior Ambient Noise Level dB(A) 54.2
Microphone Height During Testing(in) 45
Measurement Location Measured Sound Level dB(A)
Driver's Seat 52.3
Front Passenger Seats 51.4
In Line with Front Speaker 52.5
In Line with Middle Speaker 53.1
In Line with Rear Speaker 53.5
Rear Passenger Seats 53.4
Final Sound Level Meter Calibration checked by R.L.L.
Comments
All readings taken in the center aisle.