Pt. 36, App. A

14 CFR Ch. I (1-1-19 Edition)

spaschal on DSK3GDR082PROD with CFR

s-(24,k) = SPL-(24,k)SectionSPL-(23,k)
s-(25,k) = s-(24,k)
(f) Step 6: For i, from 3 through 23, compute the arithmetic average of the three adjacent slopes as follows:
s(i,k) = 1-3[s-(i,k) + s-(i + 1,k) + s-(i + 2,k)]
(g) Step 7: Compute final one-third octaveband sound pressure levels, SPL- (i,k), by beginning with band number 3 and proceeding
to band number 24 as follows:
SPL-(3,k) = SPL(3,k)
SPL-(4,k) = SPL-(3,k) + s(3,k)
-
-
SPL-(i,k) = SPL-(iSection1,k) + s(iSection1,k)

-
-
SPL-(24,k) = SPL-(23,k) + s(23,k)
(h) Setp 8: Calculate the differences, F
(i,k), between the original sound pressure
level and the final background sound pressure level as follows:
F(i,k) = SPL(i,k)-SPL-(i,k)
and note only values equal to or greater than
1.5.
(i) Step 9: For each of the relevant onethird octave bands (3 through 24), determine
tone correction factors from the sound pressure level differences F (i, k) and Table A36-
2.

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