User's Manual

l Filter: Click to apply filtering to each independent Mic Input.
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Start by clicking Add Filter
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Adjust the filter placement by moving the point along the grid (Hz, dB/deg).
n Alternatively, press the Table View button to toggle the display between
graph view and table view. Table view displays filter settings in table format for
all filters configured for the input channel. Clicking on a row in table view
selects the filter, displays the current settings for that filter, and allows you to
edit the values in the setting fields. Changes made in the setting fields are
immediately reflected in the table.
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To adjust the active filter, click the fields along the top row.
n Active Filter: Selects the filter to adjust
n Type: Sets the type of filter applied
n Frequency: Use the Frequency selector box to set the center frequency (in
Hertz) for the filter you are configuring. Range is from 20 Hz to 20 kHz in 1Hz
increments. The default is 1 kHz.
n Gain (Available for PEQ filters only): Use the Gain selector box to set the gain
value for the filter you are configuring. Range is from -15 to 15dB. The default
is 0dB.
n Q (Available for Notch and PEQ filters only): Use the Q (Quality Factor) selec-
tor box to select the ratio of the center frequency divided by the bandwidth. Q
is the inverse of bandwidth, and the two parameters are linked. Therefore
changing the Q value also changes the bandwidth value. Range is from .18 to
28.85.
n Bandwidth (Available for Notch and PEQ filters only): Use the Bandwidth
selector box to set the difference between the upper and lower points of a fil-
ter’s audio passband. Bandwidth is the inverse of Q, and the two parameters
are linked. Hence changing the bandwidth value also changes the Q value.
The range is .05 to 5.00 octaves.
n Bypass: Use the Bypass checkbox to bypass the currently selected active
filter. This feature allows you to configure different filters and save them for
future use without having to recreate them.
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Press the Phase button to display the phase relationship of the graphed frequency
response (appears as a gray line on the active filter graph). The phase scale appears
on the right vertical axis of the graph.
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Click Bypass Allto bypass all filters for the selected input channel. The filters are
grayed out in graph view, and the bypass status is shown as on in table view.
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Click Remove Filter to delete the selected filter
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Click Close to apply settings and close the window
Available Filters
There are five configurable filter types available:
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All Pass: Frequency range is 20.00Hz to 20.00kHz. All pass changes the phase of
the audio signal at the set frequency.
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High Pass: Selectable frequency cutoff is 20.00Hz to 20.00kHz. Rolloff is 12dB/-
octave. Level is fixed at 0dB.
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Low Pass: Selectable frequency cutoff is 20.00Hz to 20.00kHz. Rolloff is 12dB/-
octave. Level is fixed at 0dB.
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Notch: Center frequency range is 20.00Hz to 20.00kHz. Bandwidth is from .05 to 5.00
octaves in .01 octave increments. Level is fixed at -80dB.
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