User Guide

184 Chapter 12 Convolution Reverb: Space Designer
Filter Parameters
Space Designer’s filter provides control over the timbre of the reverb. Its controls are
distributed between two parts of the Space Designer interface: The main filter
parameters are found in Space Designer’s lower left corner, and the filter envelope
appears on the Envelope and EQ display when its Filter button is engaged. You can
select from several filter types, but you also have envelope control over the filter cutoff,
independent from the volume envelope. Changes to the filter settings result in a
recalculation of the impulse response, rather than a straight change to the sound as it
plays through the reverb.
Main Filter Parameters
 Filter On/Off button: Switches the filter section on and off.
 Filter Mode knob: Selects between the four filter modes.
 Reso(nance) knob: Adjusting this parameter emphasizes frequencies above, around,
or below the cutoff frequency. As you increase the resonance value, the sound will
lose bass and become thinner. How much effect the resonance value has on the
sound also depends on the selected filter mode, with steeper filter modes resulting
in more pronounced resonance.
Setting the Filter Mode
The Filter Mode knob switches between four modes. Click on the desired LP (lowpass)
6 dB and 12 dB, BP (bandpass) or HP (highpass) value.
 6 dB (LP): Bright, good general-purpose filter mode. It can be used to retain the top
end of most material, while still providing some filtering.
 12 dB (LP): Useful where you want a warmer sound, without drastic filter effects. It is
handy for smoothing out bright reverbs.
 BP: 6 dB per octave design. Reduces the amount of signal that surrounds the mids of
the input material, leaving the frequencies around the cutoff frequency intact.
 HP: 12 dB per octave/two-pole design. This filter reduces the level of frequencies that
fall below the cutoff frequency.