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Microphone
Microphone
Microphone
4 m
(13.1 ft)
4 m
(13.1 ft)
4 m
(13.1 ft)
Display
Microphone
Microphone Microphone
4 m
(13.1 ft)
4 m
(13.1 ft)
4 m
(13.1 ft)
4 m
(13.1 ft)
Microphone
The range of each microphone (the radius of the circle
with a
microphone at the centre) varies according to the
level of surrounding and the number of microphones
being used. Place microphones accordingly, referring
to the following table.
Noise
level/
Micro–
phone
40 dBsplA
(a quiet
room)
45 dBsplA
(a regular
room)
50 dBsplA
(a noisy
room)
1
approx.
3 m
(approx.
9.8 ft)
approx.
2.2 m
(approx.
7.2 ft)
approx.
1.2 m
(approx.
3.9 ft)
2
approx.
2.8 m
(approx.
9.2 ft)
approx.
1.5 m
(approx.
4.9 ft)
approx.
1 m
(approx.
3.3 ft)
3
approx.
2.3 m
(approx.
7.5 ft)
approx.
1.3 m
(approx.
4.3 ft)
—
4
approx.
2 m
(approx.
6.6 ft)
approx.
1.1 m
(approx.
3.6 ft)
—
22 Operating Manual Document Version 2010-10
Preparation