12.25

EUROPA SHAPESHIFTING SYNTHESIZER731
Spectral Filter On/Off
D Click the On/Off LED button to activate/deactivate the Spectral Filter.
Spectral Filter display
The interactive Spectral Filter display shows the filter shape in real-time.
• Clicking and dragging vertically in the display changes the Freq parameter, see “Freq”.
• Clicking and dragging horizontally in the display changes the Resonance parameter, see “Reso”.
q See “Recording display movements in the sequencer” for tips about automating display movements.
Spectral Filter selector
D Click the Spectral Filter name box to bring up a menu of the available filter types.
The available filter types are:
•LP 12
This simulates a standard 12dB/octave lowpass filter. Set the cutoff frequency with the Freq knob and the
resonance amount with the Reso knob.
•LP 24
This simulates a standard 24dB/octave lowpass filter. Set the cutoff frequency with the Freq knob and the
resonance amount with the Reso knob.
•HP 24
This simulates a standard 24dB/octave highpass filter. Set the cutoff frequency with the Freq knob and the
resonance amount with the Reso knob.
• BP 12
This simulates a standard 12dB/octave bandpass filter. Set the center frequency with the Freq knob and the
resonance amount with the Reso knob.
•Par EQ
This simulates a standard single band parametric equalizer with a fixed bandwidth. Set the center frequency with
the Freq knob and the gain/attenuation with the Reso knob.
•Dual Peak
This simulates two 12dB/octave bandpass filter routed in parallel. Set the center frequency of the first bandpass
filter with the Freq knob and the peak separation with the Reso knob.
• Vocal Formant
This simulates the formants of the vocal tract by using multi-peak+notch filters. Change the formant with the Freq
and Reso knobs.
• LP Variable Slope
This simulates a non-resonant lowpass filter with a variable attenuation slope. Set the cutoff frequency with the
Freq knob and the attenuation slope with the Reso knob.
•HP Variable Slope
This simulates a non-resonant highpass filter with a variable attenuation slope. Set the cutoff frequency with the
Freq knob and the attenuation slope with the Reso knob.
• Comb +
This simulates a multi notch filter, great for phaser types of effects. Set the cutoff frequency of the first notch with
the Freq knob and the attenuation amount - and consequently the bandwidth - of the notches with the Reso knob.
The difference between “Comb +” and “Comb –” (see below) is in the position of the peaks in the spectrum. The
main audible difference is that the “Comb –” version causes a bass cut.