11
11
1m
1m
unit
about 1.4m
MICROPHONE
ceiling
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
μ
bar)
PCA-RP140GA
PCA-RP140GA#1
PCH-P140GAH
NOTCH
High
Medium1
Medium2
Low
SPL(dB)
45
43
41
39
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
μ
bar)
PCA-RP140GA
PCA-RP140GA#1
PCH-P140GAH
NOTCH
High
Medium1
Medium2
Low
SPL(dB)
48
45
43
41
LINE
PCA-RP125KAQ
PCA-RP140KAQ