Filter - Korg modwave native Manual

Synthesis page
Pitch and Phase
Octave
[–2, –1, 0, +1, +2]
This sets the basic pitch of the Oscillator, in octaves. The default is 0.
Transpose
[–12...+12]
This adjusts the pitch of the Oscillator in semitones, over a range of ±1 octave. For Multisamples this also affects the
index into the Multisample map, potentially changing the sample selection, similar to transposing the entire keyboard.
Tune
[–12.00...+12.00]
This adjusts the pitch of the Oscillator in semitones with high resolution (good for continuous modulation), over a
range of ±1 octave.
Phase
[-180...+180]
This controls the phase of the waveform at the start of the note. It's most useful when Oscillators 1 and 2 are not
detuned. Phase is not available when Mode is set to Sample.

Filter

Type
[Polysix, MS-20 LP, MS-20 HP, 2-pole LP, 2-pole HP, 2-pole
BP, 2-pole BR, 4-pole LP, 4-pole HP, 4-pole BP, 4-pole BR,
Multi Filter]
LP (Low Pass). This cuts out the parts of the sound which
are higher than the cutoff frequency. Low Pass is the most
common type of filter, and is used to make bright timbres
sound darker.
HP (High Pass). This cuts out the parts of the sound which
are lower than the cutoff frequency. You can use this to make
timbres sound thinner or more buzzy.
BP (Band Pass). This cuts out all parts of the sound, both highs
and lows, except for the region around the cutoff frequency.
Since this filter cuts out both high and low frequencies, its
effect can change dramatically depending on the cutoff setting
and the oscillator's Multisample or Wavetable.
With low resonance settings, you can use the Band Pass filter
to create telephone or vintage phonograph sounds. With
higher resonance settings, it can create buzzy or nasal timbres.
BR (Band Reject). This filter type–also called a notch filter–
cuts only the parts of the sound directly around the cutoff
frequency. Try modulating the cutoff with an LFO to create
phaser-like effects.
2-pole LP, HP, BP, and BR: These produce 12dB/octave slopes
for LP and HP, and 6dB/octave for BP and BR. A classic
synthesizer expander module used this type of filter.
4-pole LP, HP, BP, and BR: These produce 24dB/octave slopes
for LP and HP, and 12dB/octave for BP and BR. In comparison to 2-pole filters, these create a sharper roll-off beyond
the cutoff frequency with more delicate resonance. Many classic analog synths used this general type of filter.
Multi Filter. This is a complex filter which is capable of all of the 2-pole filter types, and many more besides. See "Multi
Filter" on page 31.
Low Pass
High Pass
Band Pass
Band Reject
29
Cuto Frequency