User Guide

120 Chapter 6 Filter
You can modulate the defined frequency band using the Speed, CF Modulation, and
BW Modulation parameters. Speed determines the modulation frequency, CF (Center
Frequency) Modulation defines the intensity of the center frequency modulation, and
BW (Band Width) Modulation controls the bandwidth modulation.
After making your adjustments, you can use the Gain slider to adjust the final output
level of the processed signal.
One way to get better acquainted with the operation of the Spectral Gate would be to
start with a drum loop. Set the Center Freq. to its minimum (20 Hz) and the Bandwidth
to its maximum (20000 Hz) value (so that the entire frequency range is processed). Turn
up the Super Energy and Sub Energy knobs, one at a time, then try different Threshold
settings. This should give you a good sense of how different Threshold levels affect the
sound of Super Energy and Sub Energy. When you come across a sound that you like or
consider useful, narrow the Bandwidth drastically, gradually increase the Center Freq.,
and then use the Low Level and High Level sliders to mix in some treble and bass from
the original signal. At lower Speed settings, turn up the CF Mod. or BW Mod. knobs.
Soundtrack Pro Autofilter
The Soundtrack Pro Autofilter is a simple lowpass resonance filter that offers the
following parameters:
 Cutoff Frequency slider and field: Sets the cutoff frequency for the lowpass filter.
 Resonance slider and field: Adjusts the amount of emphasis in the frequency band
around the cutoff frequency.