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Chapter 7 ES P 131
ES P lter parameters
ES P includes a lowpass lter that lets you contour the output signals from the oscillator.
Filter parameters
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Frequency knob: Rotate to set the cuto frequency of the ES P’s lowpass lter.
•
Resonance knob: Rotate to boost or cut portions of the signal that surround the frequency
dened by the Frequency knob.
Note: Increasing the Resonance value results in a rejection of bass—low frequency energy—
when using lowpass lters. The ES P compensates for this side eect internally, resulting in a
more bassy sound.
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1/3, 2/3, and 3/3 (key follow) buttons: The cuto frequency can be modulated by MIDI note
number (keyboard position); you may know this parameter as keyboard follow on other
synthesizers. Click a button to choose 1/3, 2/3, or full-keyboard follow (3/3). If no button is
active, the key you strike won’t aect the cuto frequency. This makes the lower notes sound
relatively brighter than the higher ones. If you choose 3/3, the lter follows the pitch, resulting
in a constant relationship between cuto frequency and pitch. This is typical of many acoustic
instruments where higher notes sound both brighter in tone and higher in pitch.
•
ADSR Int knob: Rotate to dene the amount (depth) of cuto frequency modulation applied by
the envelope generator (see ES P envelope and level controls on page 132).
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Velo Filter knob: Rotate to set the velocity sensitivity of the cuto frequency modulation
applied by the envelope generator. The main envelope generator (ADSR) modulates the cuto
frequency over the duration of a note. The intensity of this modulation can respond to velocity
information. If you play pianissimo (velocity = 1), the modulation is minimal. If you strike with
the hardest fortissimo (velocity = 127), the modulation is more intense.