Filter
51
Filter
Filter
Type
(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]
Pressing the front panel
FILTER TYPE
button selects and edits the
Type
parameter. Three useful settings are available
directly: the Polysix LP, the MS-20 LP, and the Multi Filter. Many more types are available by editing the on-screen
parameter. If in doing so you select one of the three types listed on the front panel, the front-panel
FILTER TYPE
LEDs will update to show the selection. Selecting any other Filter Type lights the
MORE
LED. If you switch between
Types
from the front-panel button, the
MORE
position remembers the last-used “more”
Type
.
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.
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 LFP 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
Low Pass
High Pass
Band Pass
Band Reject
Cutoff Frequency
Содержание modvawe
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