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11.6 Directivity
1,000 - 2,000
2,000 - 4,000
4,000 - 8,000
8,000 -12,500
11.7 Diffuse field sensitivity (S)
11.8 Reference conditions
Type of sound field:
Reference direction:
Reference sound pressure:
Reference frequency:
Reference temperature:
Relative humidity:
Atmospheric pressure:
11.9 Warm-up time
Warm-up time
Variation of the sensitivity at 30º and 90º
(see appendix 1) (C-130)
Frequency
30° (dB)
(Hz)
40 - 1,000
Microphone C130
Frequency (Hz)
2,000
3,000
4,000
12,500
46
90° (dB)
0.1
0.2
0.3
0.4
0.3
0.4
1.0
2.0
1.4
5.7
S (mV/Pa)
26.44
17.35
20.61
12.05
free field
perpendicular
microphone's diaphragm
94 dB (referred to 20 Pa)
1 kHz
20 °C
65 %
1013 mbar
to
the
30 seconds
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