Korg microSTATION Operation Manual page 26

Playing and editing programs
Resonance
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
smoothly.
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.
Low resonance
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.
Filter EG
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.
LFO modulation
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
character.
22
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
volume levels.
For example, the volume of a piano note begins at a
high volume the instant you play the note, and then
decreases gradually.
The volume of an organ note, on the other hand,
remains constant as long as you continue pressing the
key.
The volume of a note on a violin or wind instrument
can be varied during the note by the musician (i.e., by
High resonance
regulating the amount of pressure on the bow or the
force of the breath).
Volume
Amp Modulation
You can use the following modulation sources to vary
the amp volume.
LFO1/2
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.
Velocity
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
volume.
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.
Piano
Volume
Volume decays gradually
Time
Organ
Volume remains constant
until note is released
Time