18.3
More than one listening
position
If an ARC Zone consists of more than
one listening position (e.g. a sofa) then
the measurement should be performed
once for each position. Figures
and
show a examples of zones
consisting of many possible listening
positions. The microphone should
placed at three positions (at
ear-height) distributed roughly evenly
throughout each zone to create the
ARC filter for each situation.
Figure 18.4: Recommended ARC micro-
phone placements (in red) for a multiple
listening positions.
Figure 18.5: Example ARC microphone
placements (in red) for a passive listen-
ing and background music situations at
a dining table.
Note that, in cases where there is
overlap between different ARC Zones,
the measurements can be combined
by combining ARC Profiles in the
BeoLab 90 interface instead of
duplicating measurements. An
example of this is shown in Figure
Figure 18.6: An example of avoiding
duplicate microphone placements when
ARC Zones overlap. The “sweet spot”
zone is measured using the microphone
placements shown in red. The other lis-
tening positions on the sofas are mea-
sured for a second ARC Zone using
the microphone placements shown in
blue. These two are combined by se-
lecting both in the interface to com-
pletely cover the entire area.
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