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Chapter 6 Filter eects 140
Use Spectral Gate
One way you can familiarize yourself with the operation of Spectral Gate is to start with a
drum loop. Set Center Freq to its minimum value (20 Hz) and Bandwidth to its maximum value
(20,000 Hz) so that the entire frequency range is processed. Turn up the Super Energy and Sub
Energy knobs, one at a time, and then try dierent Threshold settings to get a sense of how
dierent Threshold levels aect the sound of Super Energy and Sub Energy. When you have
obtained a sound that you like or consider useful, narrow the Bandwidth parameter drastically,
gradually increase 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 Modulation or
BW Modulation sliders.
Get started with Spectral Gate
1 Rotate the Center Freq and Bandwidth knobs to set the frequency band you want to process.
The graphic display shows the band that you dene with these two parameters.
2 Drag the Threshold slider to set the appropriate level.
All incoming signals above and below the threshold level are divided into upper and lower
frequency ranges.
3 Rotate the Super Energy knob to control the level of the frequencies above the threshold, and
rotate the Sub Energy knob to control the level of the frequencies below the threshold.
4 Drag the Low Level slider and the High Level slider to mix the frequencies that fall outside the
dened frequency band with the processed signal.
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Use the Low Level slider to blend the frequencies below the dened frequency band with the
processed signal.
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Use the High Level slider to blend frequencies above the dened frequency band with the
processed signal.
5 Drag the Speed, CF Modulation, and BW Modulation sliders to modulate the dened frequency
band.
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Use the Speed slider to determine the modulation frequency.
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Use the CF Modulation slider to dene the intensity of the center frequency modulation.
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Use the BW Modulation slider to control the amount of bandwidth modulation.
6 Drag the Gain slider to adjust the nal output level of the processed signal.