Playing and editing programs
Resonance emphasizes the frequencies around the
cutoff frequency, as shown in the diagram below.
When this is set to 0, there is no emphasis, and
frequencies beyond the cutoff will simply diminish
At medium settings, the resonance will alter the timbre
of the filter, making it sound more nasal, or more
extreme. At very high settings, the resonance can be
heard as a separate, whistling pitch.
Modulating a filter
You can use the filter EG or LFO to modulate the cutoff
frequency of a filter. This is a method of producing rich
variation in the character of the sound.
Use PROG EDIT: Filter/Amp "Flt EG Int" to specify
how deeply the filter EG will modulate the filter. Use
PROG EDIT: Filter EG to adjust the envelope.
You can use LFO1 and LFO2 to modulate the filter.
Filter modulation produced by an LFO will create a
vintage‐sounding auto‐wah effect.
Use PROG EDIT: OSC1 (or OSC2) "FltLFO1toA,"
"FltLFO1toB," "FltLFO2toA," and "FltLFO2toB" to
specify how deeply the LFOs will affect the tonal
Adjusting the amp
In the Amp section you can use Amp EG, and LFO 1/2
to control the volume.
Background - what does "Amp" mean?
Different sounds have characteristic shapes to their
For example, the volume of a piano note begins at a
high volume the instant you play the note, and then
The volume of an organ note, on the other hand,
remains constant as long as you continue pressing the
The volume of a note on a violin or wind instrument
can be varied during the note by the musician (i.e., by
regulating the amount of pressure on the bow or the
force of the breath).
You can use the following modulation sources to vary
the amp volume.
This specifies the amount of volume change (tremolo)
produced by the LFO.
Use PROG EDIT: OSC1 (or OSC2) "AmpLFO1Int" and
"AmpLFO2Int" to specify how deeply the LFO will
affect the volume.
Most programs will produce a lower volume when
you play the keyboard softly, and a higher volume
when you play the keyboard strongly. The PROG
EDIT: Filter/Amp "AmpVel Int" setting specifies how
velocity (keyboard playing strength) will affect the
Normally you'll set the amp modulation to a positive
(+) value. Raising this setting will increase the
difference in volume between notes that are played
softly or strongly.
Volume decays gradually
Volume remains constant
until note is released