107
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
BAND CENTER FREQUENCIES, Hz
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 bar)
PCA-RP50GA
NOTCH
High
Medium1
Medium2
Low
SPL(dB)
42
40
38
37
LINE
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
BAND CENTER FREQUENCIES, Hz
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 bar)
PCA-RP50GA2
PCA-RP60GA
PCA-RP71GA
NOTCH
High
Medium1
Medium2
Low
SPL(dB)
43
41
39
37
LINE
UNIT
External static
pressure 125Pa
1m
1m
MICROPHONE
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-70
NC-20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 bar)
PEA-RP71EA
High
Low
55
SPL(dB)
52
LINE
NOTCH
1m
1m
unit
about 1.4m
MICROPHONE
ceiling