TM 5-805-4/AFJMAN 32-1090
Table C-25. Frequency Adjustments (in dB) for DRPR Electric Motors.
Octave
Value to
be Subtracted
Band
From Overall SPL
(Hz)
(dB)
31
9
63
9
125
7
250
7
500
6
1000
9
2000
12
4000
18
8000
27
A-weighted,
dB(A)
4
Figure C-7. Sound Pressure Levels of DRPR Motors at 3 ft. Distance.
C-23
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