User Guide

Chapter 6 Filter 115
 Sensitivity knob: Sets the degree of responsiveness of U/V detection. By turning this
knob to the right, more of the individual unvoiced portions of the input signal are
recognized.
When high settings are used, the increased sensitivity to unvoiced signals can lead to
the U/V source—determined by the Mode parameter—being used on the majority
of the input signal, including voiced signals. Sonically, this results in a sound that
resembles a radio signal which is breaking up and contains a lot of static or noise.
 Mode pop-up menu: Choose the sound source(s) which can be used to replace the
unvoiced content of the input signal. The choices are: Off, Noise, Noise + Synth, or
Blend.
 Noise: Uses noise alone for the unvoiced portions of the sound.
 Noise + Synth: Uses noise and the synthesizer for the unvoiced portions of the
sound,
 Blend: Uses the analysis signal after it has passed through a highpass filter, for the
unvoiced portions of the sound. This filtered analysis signal is then mixed with the
EVOC 20 TrackOscillator output signal. The Sensitivity parameter has no effect on
this setting.
 Level slider: Controls the amount of the signal (Noise, Noise + Synth, or Blend) used
to replace the unvoiced content of the input signal.
Output Section
Warning: Care should be taken with this control, particularly when a high Sensitivity
value is used, to avoid internally overloading the EVOC 20 TrackOscillator.