70
Press
OK
. The personalisation sweeps will run. If you had set
SAVE AT END
to
YES
, then
the channels on/off screen will reappear with the following settings (verify):
1(L )ON 2(R )ON
3(C )ON 4(SW )ON
5(LS )ON 6(RS )ON
7(LB )ON 8(RB )ON
Press
OK
. Then enter name and environment data. The resulting PRIR will have 8.0 virtual
channels.
Like
LR
,
LbRb
creates a third virtual speaker equivalent to, and centred between, the others, in
this case at the 180° position between
Lb
and
Rb
. It is assigned to channel
4
/
SW
, and if the
measured speaker has very good bass response, it might be used for the subwoofer signal; but it
is very likely not appropriate for subwoofer duty. If a real subwoofer is available, you will want
to conduct Stage 4 below, which will overwrite the channel 4 virtual speaker with a virtual
subwoofer based on a real subwoofer. See also Direct Bass for a very effective solution when a
real subwoofer is unavailable for measurement.
Stage 4 (optional): virtual subwoofer.
If you had wished to measure a subwoofer for the PRIR, then you would have set
SAVE AT
END
to
NO
for Stage 3. Now set
SAVE AT END
to
YES
. Press
CAL
and set only
SW
to
ON
and all other channels
OFF
. Run
CAL
and then
SPK
. After the diagnostic screens, the channels
on/off screen will appear. Set it as follows.
1(L )ON 2(R )ON
3(C )ON 4(SW )ON
5(LS )ON 6(RS )ON
7(LB )ON 8(RB )ON
This causes eight channels to be saved, for a 7.1 PRIR.
Notes:
1. The methods of “multiplying” speakers described in this section result in each speaker being
mapped to a different channel. It is also possible to use repeated sweeps to place a single speaker in
several positions, resulting in multiple virtual speakers assigned to the same channel, as might be used
to create multiple subwoofers. See the discussion under PRIR Optimisation.
2. When making PRIR measurements in stages (setting
SAVE AT END
to
NO
), the look angle
method (
AZI
,
HT
,
PLT
) need not be the same for the different stages.
3. The
LF ROLL-OFF
line in the
SPEAKER MODE MENU
does not pertain to current functions.
Leave at the default setting, which is
NONE
.
4. In the
ALL
mode, the Realiser measures the delay (distance) for each speaker and replicates it
precisely in the emulation. In the
LR
,
LsRs
, and
LbRb
modes, the Realiser aligns all the speaker
delays to 8 ms. The reason for the alignment is that, as the user moves in stages to achieve the correct
speaker angles, the distances will change, and the goal in the end is that the speakers be placed on a
virtual circle. Delay is pertinent only to sync. The perception of distance is based on the direct-to-
reverberant sound ratio, which is not altered (although the Realiser allows you to alter it; see
PROXIMITY
).
