User Manual

Playing and editing Programs
58
Filter Types
This selects the parts of the sound which will be affected by
the filter, as described below. With the Serial and Parallel
routings, you can independently set the types for Filter A and
Filter B.
The filters will produce very different results depending on
the selected filter type. The selections will change slightly
according to the selected Filter Routing, to show the correct
cutoff slope in dB per octave.
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.
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.
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.
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.
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.
Filter Types and Cutoff Frequency
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.
To make the resonance track the keyboard pitch, see “Key
Follow,” on page 78 of the Parameter Guide.
Modulating the filters
You can modulate the filter cutoff frequency using the Filter
EG, the LFOs, keyboard tracking, and other built-in and
MIDI controllers. This is a great way to add a rich variety of
tonal change to the sound.
Filter EG
Low Pass
High Pass
Band Pass
Band Reject
Cutoff Frequency
Low resonance
H
igh resonance