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Chapter 9 EXS24 mkII 173
EXS24 mkII lter parameters
EXS24 mkII lter overview
These parameters control the EXS24 mkII lter. You can congure the type of lter, lter
resonance, cuto frequency, drive, and amount of key follow. For details about the lter envelope,
see EXS24 mkII envelope overview on page 184.
Filter parameters
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Filter On/O button: Turns the entire lter section and the lter envelope on or o. Disabling
the lter section makes it easier to hear adjustments to other sound parameters because the
lter always heavily aects the sound.
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Filter Mode/Slope buttons: Labeled HP, LP, and BP at the bottom of the lter section, these
buttons determine the type and slope of the lter. See Set the EXS24 mkII lter mode and
slope on page 174 .
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Cuto knob: Rotate to set the cuto frequency of the lter. The Cuto value also serves as the
starting point for any modulation involving the lter.
•
In a lowpass lter, the higher the cuto frequency is set, the higher the frequencies of signals
that are allowed to pass.
•
In a highpass lter, the cuto frequency determines the point where lower frequencies are
suppressed, with only upper frequencies allowed to pass.
•
In a bandpass/band-rejection lter, the cuto frequency determines the center frequency for
the bandpass or band-rejection lter.
•
Resonance knob: Rotate to boost or cut the frequency area surrounding the cuto frequency.
Very high Resonance values introduce self-oscillation, causing the lter to produce an audible
sine wave.
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In a lowpass lter, resonance emphasizes or suppresses signals below the cuto frequency.
•
In a highpass lter, resonance emphasizes or suppresses signals above the cuto frequency.
•
In bandpass lters, resonance emphasizes or suppresses the portions of the signal—the
frequency band—that surround the dened frequency, set with the Cuto knob. In EXS24
mkII, Resonance denes the width of the frequency band.