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How to Determine the Angle between the Microphones
13
English
main stereo
axis
Area to be recorded
(e.g. orchestra or band)
Table 1
This table can be used to determine the ste-
reophonic recording angle
α
from the ratio of
b to a (according to Michael Williams)
b/a
angle
ω
between the
microphones
recording
angle
α
4,3
130°
130°
5,6
141°
120°
8,3
153°
110°
16,3
166°
100°
oo
180°
90°
a
b
α
ω
listener
Fig. 3b
The stereophonic recording angle
α
from Fig. 3a
is mapped into an angle
α
‘ of 60° during
loudspeaker playback.
α
’=
60°
Fig. 3a
Recording angle
α
and the angle
ω
between
the microphones; all sound sources should be
lying within the recording angle
α
in order to
guarantee good mapping into the playback
area
α
‘:
