Specifications
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To add additional filters, click the Add Filter button. The number of remaining available filters for the channel is
shown under Filters Remaining.
Filter Types
Use the Type drop-down list to select from the following input filters:
All Pass. Frequency range is 20Hz to 20kHz with resolution to 1Hz or four places (whichever is larger). All
pass changes the phase of the audio signal at the set frequency.
High Pass. Selectable frequency cutoff is 20Hz to 20kHz, in 1Hz increments. Rolloff is 12dB/octave. Level is
fixed at 0dB.
Low Pass. Selectable frequency cutoff is 20Hz to 20kHz in 1Hz increments. Rolloff is 12dB/octave. Level is
fixed at 0dB.
Notch. Center frequency range is 20Hz to 20kHz with resolution to 1Hz or four places (whichever is larger).
Bandwidth is from .05 to 5 octaves in .01 octave increments. Level is fixed at -80dB.
PEQ (Parametric Equalizer). Center frequency range is 20Hz to 20kHz with resolution to 1Hz or 4 places
(whichever is larger). Bandwidth is .05 to 5 octaves in .01 octave increments. Level range is -15 to +15dB in
0.5dB increments.
Frequency (Available for all filter types.)
Use the Frequency selector box to set the center frequency (in Hertz) for the filter you are configuring. Range is
from 20Hz to 20kHz in 1Hz increments. Default is 1kHz.
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 -18 to 18dB, in .5dB
increments. Default is 0dB.
Q (Available for Notch and PEQ filters only.)
Use the Q (Quality Factor) selector box to select the ratio of the center frequency divided by the bandwidth. Q
reflects an inverse relationship to the bandwidth. Range is from .20:1 to 40:1 in .20 increments.
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 filter’s audio
passband.
Bypass (Available for all filter types)
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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