Focal ASTRAL 16 Manual De Uso página 30

ASTRAL 16
U s e r m a n u a l
12. Measure Acoustic Response of Remaining
Positions
Once the first measurement is taken, that position
will be checked indicating successful capture.
Move the microphone to the next position of
the diagram that you wish to measure. Repeat
measurements for all listening positions. With
each measurement, the waveform graphic will
update.
Click Proceed to filter design when done with all 9
or 16 measurements.
13. Target Curve
C
A
B
Once all measurements are complete, you can
visualize measurements of each speaker. You
can customize the target curve for each speaker
by (A) limiting the correction window and (B)
dragging anchor points on the target curve to
desired locations.By default a target curve is
proposed offering a typical cinema curve. It is
possible to save or load target curve through
menu (C). Good target curve design is beyond the
scope of this document, but there are some key
points to remember.
Do not attempt to boost bass of a
•
loudspeaker below its low frequency limit
as this will only lead to high distortion and
likely damage
• High quality speakers usually benefit from
limiting the correction
frequencies.
™
C
A
D
E
F
window to low
• Ideal curves usually have a slightly downward
slope. A loudspeaker may have a flat amplitude
response on axis, but will rarely be flat off axis.
• Aim for identical target curves between
channel pairs (such as Front Left and Front
Right) to obtain the best spatial imaging. It is
possible to create group of speakers (D) before
adjusting the target curve for this group.
There are different possible viewing options
available (E). Save the Target Curve through the
Menu (C) for use in another channel or for other
future use. Repeat for all channels/group of
channels and then Proceed to Filter Export (F).
14. Export Filters to Astral 16
In this last step, filters created in "Step 13. Target
Curve" are exported to Astral 16 and combined
into the new profile selected "Step 5. Select Base
Profile".
Select the "empty" slot 1 (A), give a name and a
description to your new Dirac profile (B). Save your
project for future use (C) before selecting Export
filter (D) and return to Astral 16 Web UI.
15. Return to Astral 16 web UI
A popup has been updated to confirm that you
wish to combine the Dirac Live corrections with
the base profile.
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B
D
B
A