NONLINEAR LABS C15 - Page 40

Sound Generation
40
▶
Try dierent Sustain levels while playing notes and dial in approx. [ 5 % ].
▶
Press Fluct (Oscillator A).
▶
Try dierent Fluctuation levels while playing notes.
ߊ By changing the envelope, pitch, and signal spectrum of Oscillator A, the
self-oscillating Comb-Filter will generate a plethora of dierent timbres.
Please try longer Attack and Decay times as well as dierent settings of
PM, Self, and the Feedback Mixer and FB Mix parameters.
… by filtering the feedback signal using the State Variable Filter:
First, let’s return to a well-defined (and well-known) setting:
▶
Recall the Init sound.
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Set Comb (Output Mixer) to [ 50 % ].
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Set Decay 1 (Envelope A) to 1 ms and Decay 2 (Envelope A) to 5 ms.
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Set PM Self to 75 %.
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Set Decay (Comb Filter) to [ 1260 ms ] and Hi Cut to [ 120.00 st ].
Now we are creating a special feedback routing:
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Press Comb Mix (State Variable Filter).
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Turn the Encoder to [ 100.0 % ].
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Press S.V. Filter (Feedback Mixer).
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Turn the Encoder to [ 50.0 % ].
▶
Press FB Mix (Oscillator A).
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Turn the Encoder to [ 25.0 % ].
ߊ The State Variable Filter is now placed within the feedback path and is
processing the signal arriving from the Comb Filter.
▶
Press Spread (State Variable Filter) until [ L - B - H ] is enabled.
▶
Turn the Encoder to [ 50.0 % ] to enable the bandpass setting.
▶
Press Reson (State Variable Filter).
▶
Turn the Encoder to [ 75.0 % ].
ߊ The S.V. Filter is now working as a narrow band-pass, selecting a fre-
quency band for the feedback loop.
▶
Press Cuto (State Variable Filter).
▶
Sweep the Encoder slowly across the entire range and dial in a value that
pleases your ear, let’s say [ 80.0 st ].
ߊ Shaping the feedback response using the S.V. Filter produces stunning
timbral results. By shiing the bandpass, self-oscillation appears only
when the band is matching one of the overtones that the Comb Filter can