Focal ASTRAL 16 Manual De Uso página 25

ASTRAL 16
U s e r m a n u a l
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2. Graphical UI
The EQs defined are visualised in a graphical
window. Individual and combined EQ curves are
shown, providing an instant understanding of EQ
impact on the correction curve.
3. Create EQ
To design EQ curves for any channel, you need to add
EQ definition line using the Create EQ button (3).
4. Filter Shape
Each filter must begin with a variation of one of
5 types.
Low Pass: Continuously declining output above
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a cutoff frequency at a defined rate.
High Pass: Continuously declining output
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below a cutoff frequency at a defined rate.
• Bell: Band pass or cut filter with a defined
center frequency, boost or cut amount, and Q.
Low Shelf: Boost or cut frequencies below a
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cutoff frequency by a fixed amount.
High Shelf: Boost or cut frequencies above a
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cutoff frequency by a fixed amount.
For LPF, HPF, and Bell filters, choose Butterworth
12dB/oct, Butterworth 12dB/oct inverse, Linkwitz
Riley 12dB/oct, Linkwitz Riley 12dB/oct inverse,
Butterworth 24dB/oct, or Linkwitz Riley 24dB/oct,
Butterworth 48dB/oct, or Linkwitz Riley 48dB/oct.
5. Delete
Unused EQ line can be removed using the Bin
button.
6. Status
In the course of designing your filter, you may
wish to measure or listen to progress compared
to the absence of that filter. Click Active "No" to
temporarily omit that filter from the aggregate
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curve. Click "Yes" to activate it back. You can also
decide here whether it is shown in the visualization
curve by checking the Graph item.
7. Quality Factor / Bandwidth
Bell filters require that you specify a Q. High Q
affects a narrow bandwidth, and low Q affects
a wide bandwidth. You can enter this number
directly in the text box or increment/decrement by
the amount chosen in the header row using the +/-
buttons to the right. Or, click a fractional or multiple
octave button to automatically calculate Q.
8. Gain
Bell and shelving filters require that you set the
amount of boost or cut. You can enter this number
directly in the text box or increment/decrement by
the amount chosen in the header row using the +/-
buttons to the right.
9. Frequency
Each filter requires that a center or cutoff
frequency be specified. You can enter this number
directly in the text box or increment/decrement by
the amount chosen in the header row using the +/-
buttons to the right.
10. Channel Select
Select the desired channel to equalize here.
11. Copy to Channel
You may wish to duplicate your filter set to another
channel without manually rebuilding it for each
identical channel. Select a channel to copy the
current filters to and click COPY.
Note that after making any changes, you must
press the SAVE button near the top right of the
screen or you will loose your changes.
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