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15
PEA-RP100GAA
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
63 125 250 500 1k 2k 4k 8k
Octave band center frequencies (Hz)
High Low
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
63 125 250 500 1k 2k 4k 8k
Octave band center frequencies (Hz)
High Low
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
63 125 250 500 1k 2k 4k 8k
Octave band center frequencies (Hz)
High Low
NC-60
NC-50
NC-40
NC-20
NC-30
NC-60
NC-50
NC-40
NC-20
NC-30
NC-60
NC-50
NC-40
NC-20
NC-30
(External static pressure 50Pa)
(External static pressure 100Pa)
(External static pressure 150Pa)
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
5-2. NC curves
HWE1309A.qx 3/18/14 10:11 AM Page 15
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