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180 Chapter 14 The EVOC 20 PS
Analog Tuning
The Analog tuning parameter simulates the instability of analog circuitry found in
vintage vocoders. Analog alters the pitch of each note randomly. This behavior is much
like that of polyphonic analog synthesizers. The Analog knob controls the intensity of
this random detuning.
Tuning
The range of detuning is defined in the Tune window. Adjustments are made by using
the mouse as a slider. The range is from 425 to 455 Hz.
Glide
The effect of this knob depends on the setting made in the Bend Range window. Glide
determines the time it takes for the pitch to slide from one note to another
(portamento). The maximum value is +5000 ms.
Bend Range
Bend Range determines the pitch bend modulation range in semitones. The range is
±12 semitones.
Cutoff
This parameter sets the cutoff frequency of the lowpass filter. As you turn this knob to
the left, an increasing number of high frequencies is filtered from the signal.
Resonance
Turning up Resonance leads to an emphasis of the frequency area surrounding the
frequency defined by the Cutoff parameter. The filter is used for rough signal shaping,
before the signal is articulated by the vocoding circuits.
Note: Set Cutoff as high as possible, and add a little Resonance to achieve a nice,
brilliant high-end.