Nc Curve - Mitsubishi Electric PRH-P8MYA Technical & Service Manual

[10] NC Curve

PRH-P8MYA
Measurement condition
Measured
point
PRH-P10MYA
Measurement condition
Measured
point
63Hz
1m
70
1m
60
50
40
30
20
Approximate minimum
audible limit on
continuous noise
10
63
63Hz
1m
70
1m
60
50
40
30
20
Approximate minimum
audible limit on
continuous noise
10
63
125Hz 250Hz 500Hz 1000Hz
67 63 58 58
125 250 500
OCTAVE BAND CENTER FREQUENCIES <Hz>
125Hz 250Hz 500Hz 1000Hz
72 64 63 59
125 250 500
OCTAVE BAND CENTER FREQUENCIES <Hz>
- 32 -
2000Hz 4000Hz 8000Hz A characteristics
52 51 43 38
1000 2000 4000
2000Hz 4000Hz 8000Hz A characteristics
52 47 43 35
1000 2000 4000
59 (dB)
NC70
NC60
NC50
NC40
NC30
NC20
8000
60
(dB)
NC70
NC60
NC50
NC40
NC30
NC20
8000