78
PEAD-RP71JA(L)
External static pressure 35Pa
External static pressure 50Pa
External static pressure 70Pa
High
Middle
Low
80
70
60
50
40
30
20
10
0
63
125
250
500
1000
2000
4000
8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
μ
bar)
BAND CENTER FREQUENCIES, Hz
High
Middle
Low
80
70
60
50
40
30
20
10
0
63
125
250
500
1000
2000
4000
8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
AVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
μ
bar)
BAND CENTER FREQUENCIES, Hz
High
Middle
Low
80
70
60
50
40
30
20
10
0
63
125
250
500
1000
2000
4000
8000
Approximate
minimum audible
limit on continuous
noise
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
AVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
μ
bar)
BAND CENTER FREQUENCIES, Hz
Approximate
minimum audible
limit on continuous
noise
Approximate
minimum audible
limit on continuous
noise
External static pressure 100Pa
External static pressure 150Pa
High
Middle
Low
80
70
60
50
40
30
20
10
0
63
125
250
500
1000
2000
4000
8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
μ
bar)
BAND CENTER FREQUENCIES, Hz
High
Middle
Low
80
70
60
50
40
30
20
10
0
63
125
250
500
1000
2000
4000
8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
AVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
μ
bar)
BAND CENTER FREQUENCIES, Hz
Approximate
minimum audible
limit on continuous
noise
Approximate
minimum audible
limit on continuous
noise