A Quick Tour of UniQuest For EWI 4000s
UniQuest for EWI 4000s 23 of 44
LFO THRESHOLD
• Range is 0 to 100%. This control sets a point in the breath pressure range that
acts as a trigger for LFO Modulation to begin or end:
When used in conjunction with the LFO DEPTH and LFO BREATH parameters,
LFO THRESHOLD can be used to create a variety of sophisticated filter modula-
tions.
Filter Envelope Parameters
SWEEP TIME
• Range is 0 to 100%. Unlike a keyboard controlled synthesizer, the EWI 4000s
does not use a standard envelope generator (ADSR) to control the Filter Cutoff
Frequency. Instead, your breath pressure can act as a real-time trigger of a Sweep
whose time to complete is set by this control:
SWEEP DEPTH
• Range is -50% to +50%. Unlike a keyboard controlled synthesizer, the EWI
4000s does not use a standard envelope generator (ADSR) to control the Filter
Cutoff Frequency. Instead, your breath pressure can act as a real-time trigger of a
Sweep whose cutoff frequency value is set by this control. As shown above, neg-
ative values cause the sweep to begin at a lower frequency than original, while
positive values cause the sweep to begin at a higher frequency than original.
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