18
FUNCTIONS
CUTOFF controls the cutoff- (or corner-) frequency of the filter from 16Hz to 16kHz.
POLE selects between 2, 4 and 6 pole configuration for 12-, 24-, and 36dB/octave slope
Q-PEAK determines the boost of the corner frequency. From "9" on, the filter starts self-oscillating.
To create useful and interesting sounds, the cutoff parameter has to be controlled dynamically.
This is mostly done by the later described envelope generators and/or by modulating the cutoff with
a periodical signal e.g. an LFO- or an audio signal. This is done with the cutoff modulation section (CM).
CUTOFF MODULATION
CM 1 adjusts the corner frequency modulation intensity by ENVELOPE GENERATOR 1.
ENVELOPE GENERATOR 1 switch inverts the control voltage of envelope generator 1.
CM 2 adjusts the corner frequency modulation intensity by ENVELOPE GENERATOR 2.
ENVELOPE GENERATOR 2 switch inverts the control voltage of envelope generator 2
OSC1/LFO adjusts the corner frequency modulation intensity by the triangle waveform of OSC1 respective
to the LFO. Maximum sweep reaching over +/-5 octaves.
OSC1 LFO switch selects the triangle waveform of OSC1 or the LFO as modulation source.
AUDIO
In the patch-section of the MMF you'll find the HI Z INPUT which is an additional and patchable input.
It is internally prepatched to the WHITE NOISE. This level is adjustable in the MMF MIXER section.
OUTPUT socket allows the filtered audio signal be coupled to any input. It's destinated to
the audio input of the AMP-section (FILTER MIX).
CV
Here you'll find patchable modulation-inputs for the MMF:
CUTOFF can be used to provide other signals than the triangle waveform of OSC1 or the LFO (to which it is
internally routed; see above) as a modulation source for the cutoff frequency. Use the OSC1/LFO knob to
adjust the modulation intensity.
LEVEL can be used for gain-control respective to the amplitude-modulation output signal of the MMF.
Q-PEAK enables the resonance to be voltage controlled. Again using audio-signals can provide interesting
results.
MULTI MODE FILTER
The MMF is the most flexible filter found in any monophonic synthesizer. The whole circuit solution of
the filter is an analogue "state of the art" and results in remarkable qualities such as:
*
Wide frequency range from 5 Hz to 25 kHz
*
Vital parameters such as CUTOFF, Q-PEAK and LEVEL (output)
*
Selectable 2-, 4- and 6 poles
*
Low-, high-, band pass mode
*
Very clean sound even in self oscillation mode
*
Ideal as "effect filter" with external sound material
*
Clean, yet "warm" and "smooth" sound
*
Low noise
The Multi Mode Filter, with a wide range of controllable parameters, is especially useful as a tool to create
various high quality sounds and recreate "sounds" from many classic synthesizers, as well.
Those qualities make the Multi Mode Filter a perfect complement to the Low Pass Filter.
Configuration in series or parallel the LPF and MMF filters make it easy to create various vocal like sounds
or filter with an extreme steep slope (up to 72 dB/octave in low pass mode)
Содержание S1 MK2
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