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About the PEQ Mode
This mode lets you use the AP-700 as a stereo parametric
equalizer with 18 bands per channel, and allows you to set
the frequencies, Q values, and levels for each band. The
contents of the settings can be viewed and confirmed in
the form of frequency response curves appearing on the
display. You can also use the HPF and LPF independently
of the parametric equalizer.
About the Display on the Analyzer/Filter
Screen
The following information appears on the Analyzer/Filter
screen for the PEQ mode.
Filter screen
Frequency (Hz)
Peak Point
Patch Name and Peak Point
Analyzer screen
Display of the center frequency for the peaking filter
Low shelving
High shelving
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Basic Usage
This section describes the simple steps that are needed for
operation using the PEQ mode.
Practical applications such as independent use for the left
and right channels (Link Off), as well as the following
items, are described in "Section 5: Editing." Take a look at
that section if this is what you need.
HPF and LPF settings
Initialization
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1. Use the cursor buttons to move the cursor to the
band number, then use the (VALUE) buttons to
select the band you want to modify.
2. Use the cursor buttons to move the cursor to the
parameter you want to modify, then use the
(VALUE) buttons to change the setting.
You can repeat steps 1 and 2 to change the
settings for all the band numbers.
[BAND NUMBER] (1 to 18)
This selects the band that is to be set. The parameters for
the selected band appear in the display.
[FILTER TYPE]
(PEAKING, LOW SHELVING, or HIGH SHELVING)
This selects the type of filter.
PEAKING:
Sets Frequency, Q, and level as a para-
metric type equalizer.
LOW SHELVING:
Sets frequency and level as a low-shelv-
ing type equalizer.
HIGH SHELVING:
Sets frequency and level as a high-shelv-
ing type equalizer.
[FREQUENCY] (19.7 Hz to 20.2 kHz)
This sets the center frequency for the filter.
[Q] (0.3 to 100)
This sets the range over which the filter is applied, center-
ing on the frequency set with "FREQUENCY."
Larger values for Q result in steeper filter characteristics.
* The Q value is ignored when "LOW SHELVING" or "HIGH
SHELVING" is selected as the filter type.
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