34
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
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
µ
bar)
PUMY-71VM
PUMY-71VM
1
PUMY-71VM
2
Hi
52
SPL(dB)
LINE
NOTCH
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
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
µ
bar)
PUMY-125VM
PUMY-125VM
1
PUMY-125VM
2
PUMY-125YM
PUMY-125YM
1
PUMY-125VMA
PUMY-125VMA
1
PUMY-125YMA
Hi
54
SPL(dB)
LINE
NOTCH
1m
1m
MICROPHONE
OC183E--2.qxp 10.5.6 0:46 PM Page 34
