Noise Criterion Curves - Mitsubishi Electric PKA-RP60FAL Service Manual

5

NOISE CRITERION CURVES

PKA-RP60FAL
PKA-RP71FAL
PKH-P60FALH
PKH-P71FALH
90
80
70
60
50
40
30
APPROXIMATE
20
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
SPL(dB) LINE
NOTCH
High 45
Low 39
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
UNIT
1m
MICROPHONE
PKA-RP100FAL
PKH-P100FALH
90
80
70
60
50
40
30
APPROXIMATE
20
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125
WALL
1m
10
NOTCH SPL(dB)
High 46
Low
41
250 500 1000 2000 4000
BAND CENTER FREQUENCIES, Hz
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
8000