• Ldr Peak: Ladder peak lter that boosts frequency content at the cutoff frequency. The amount
of boost can be set using Reso.
• Ldr Notch: Ladder notch lter that attenuates frequency content in two narrow bands above
and below the cutoff frequency.
• SV Notch: 4-pole state-variable notch lter that attenuates or boosts frequency content at the
cutoff frequency. The amount of attenuation or boost can be set using Reso.
• SV BR: State-variable band reject lter that attenuates frequency content in a narrow band
slightly below cutoff frequency.
The following controls are available in this mode:
The following controls are available per lter: Cutoff (adjusts the frequency below which signals
will be attenuated); Reso (with a value greater than 0, this control will boost a small frequency
range around the cutoff frequency); and Gain (controls the amplitude increase after the lter,
which can be used to compensate for amplitude reduction due to the lter, or to increase the soft
saturation of the effect — this one is only available for Ldr Peak and Ldr Notch).
• Cutoff: Adjusts the cutoff frequency.
• Reso: Adjusts the resonance amount of the lter. Turning the control to the right makes the
frequency content at the cutoff frequency more pronounced.
• Gain: Adjusts the output level of the lter. Setting Gain to high values can be used to apply a
soft saturation effect. This control is not available when selecting the Ldr lter types.
15.5.7. Effect
Effect mode is a collection of special lters that transform the frequency spectrum in specic
ways. It offers four different lter types that change the character of the lter.
You can select the lter type using the Type selector:
• Frm 1: Variation 1 of a formant lter that produces resonances typical to those of the human
voice.
• Frm 2: Variation 2 of a formant lter that produces resonances typical to those of the human
voice.
• Vow A: Variation A of a special lter that mimics the way vowel sounds are produced by the
human mouth, similar to classic talk box effects.
• Vow B: Variation B of a special lter that mimics the way vowel sounds are produced by the
human mouth, similar to classic talk box effects.
• Phaser: Classic phaser effect that produces a number of peaks and troughs in the frequency
spectrum.
The following controls are available in this mode when the Vow or Phaser lter types are selected:
• Cutoff: Adjusts the lter frequency, effectively shifting the position of the effect in the
frequency spectrum.
• Reso: Adjusts the resonance amount. Turning the control to the right makes the effect more
pronounced.
The following controls are available in this mode when the Frm lter types are selected:
• Talk: Adjusts the the frequency response of the lter in order to produce different vowel
sounds.
MASTER PAGE 63
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