Synthesis page
22
MS-20 LP/HP and Polysix
Gain
[Loud, Less Resonance; Unity, Less Resonance; Normal, 1-osc input; Normal, 2-osc input]
Gain is available only when Type is
MS-20 LP, MS-20 HP,
or
Polysix
. These filter types include saturation, which
interacts with resonance. With anything other than very low resonance settings, input volume can have a strong effect
on their character. The lower the input gain, the more headroom remains for the resonance to bloom. Use Gain to set
the basic input level, and then fine-tune with Trim if desired.
Normal, 2-osc input
: This is the lowest input gain. It will produce the classic resonant sounds of these filters even with
extremely loud input signals.
Normal, 1-osc input
: This will produce the classic resonant sounds of these filters with a single oscillator playing at full
volume. When input is louder than a single full-volume oscillator, the resonance effect will be less pronounced.
Unity, Less Resonance
: Volume is unattenuated. This leaves less headroom, so resonance will be less prominent.
Loud, Less Resonance
: This provides a slight volume boost on input. This makes it easy to reach saturation with the
input level alone, leaving very little headroom for resonance.
Multi Filter
What’s a Multi Filter?
Standard multimode filters generate low-pass, high-pass, and band-pass filters simultaneously—but only let you use
one of them at a time. The Multi Filter gives you access to all three filter modes simultaneously, in any combination,
along with the dry input signal. You can choose from a large number of preset combinations, or create your own
complex filter modes using the Manual controls.
This is capable of some cool sounds in and of itself, but things really get interesting when you modulate Crossfade; see
below..
Crossfade
[0…100]
This is available only when Type is
Multi Filter
. Crossfade morphs between the Mode 1 and Mode 2 settings.
0
is
all Mode 1,
100
is all Mode 2, and
1-99
are intermediate values between the two Modes. Try modulating this with
envelopes, LFOs, or real-time controllers.
Preset (Multi Filter Preset)
[List of Presets]
This is available only when Type is
Multi Filter
. Presets let you quickly select from a number of useful combinations of
Modes 1 and 2. You can also select any combination you wish using the manual controls, described below.
1 (Mode 1)
[List of filter types]
This sets the filter type for Mode 1.
LP, HP, BP,
and
BR
are the standard filter types. For more information, see “Filter” on page 20.
LP+BP, LP-BP, LP-HP, BP+HP, BP-HP, Dry+LP, Dry-LP, Dry+BP, Dry-BP, Dry+LP-HP, Dry+LP-BP, Dry+BP-LP,
Dry+BP-HP, Dry+HP-LP, Dry+HP-BP, LP+HP+BP:
These combine two or more filters at equal volumes.
Dry
is the un-
filtered input signal. The minus sign (“-”) indicates when the phase of a filter is reversed.
All On
uses the Low Pass, High Pass, Band Pass, and Dry signals at equal volumes.
Manual
lets you create your own mix of the filters; an additional four parameters will appear. For more information, see
2 (Mode 2)
Mode 2 has the same selections as Mode 1.
Manual
When Mode is set to
Manual,
additional parameters appear so that you can create your own mix of the filters.
You may wonder why Band Reject is not included here. This is because it’s not a filter mode per se. Instead, it’s created
by equal amounts of High Pass and Low Pass. Try it and see!
