Korg Pa4X User Manual page 435

Trimming the filter input
▪
Use the Trim parameter (00...99) to adjust the level at which the audio signal
generated by the selected oscillator is input to filter A.
If this value is too high, the sound may distort when Resonance is set to a
high value, or when you play a chord.
Programming the filters
Programming filter A
▪
Use the Filter A > Frequency
A (00...99).
Low Pass
Level
▪
Use the Filter A > Resonance
(00...99).
The resonance emphasizes the overtone components that lie in the region
of the cutoff frequency specified by Frequency, producing a more distinctive
sound. Increasing this value will produce a stronger effect.
▪
Use the Res. Mod. by AMS
Resonance parameter.
The effect of resonance
Low Pass
Level
Low resonance value
▪
Use the Intensity
the effect that Res. Mod. by AMS will have on the resonance level specified
by Resonance.
For example if Velocity has been selected, changes in keyboard velocity will
affect the resonance.
parameter to set the cutoff frequency of filter
This is a filter that cuts the high-frequency
region above the cutoff frequency.
This is the most common type of filter, and is
12dB/oct
used to cut part of the overtone components,
making an originally bright timbre sound more
24dB/oct
mellow (darker).
When the "Filter Type" is Low Pass Resonance,
Frequency
the cutoff will have a steeper slope.
parameter to set the resonance of filter A
parameter to choose a modulation source for the
parameter (-99...+99) to specify the depth and direction of
Editing the Sounds |421
High resonance value