11.0

Table Of Contents
EFFECTS MENU 591
FILTOX – Multimode filter
Much like CORVEX and ECOX, FILTOX is also a "modulation effect". Here though,
everything relates to frequency response deflection: a modulation source controls two filter
units. Possible areas of application are synthesizer sounds (filter sweeps on pads) or
creative distortions of drumloops (e.g. for variations, fills, etc). With guitars you can create
typical 'wah' effects: either by tempo modulation or in a special mode, modulation via the
signal envelope curve.
The 'core' of FILTOX is a stereo multimode filter based on an analogue model (Chamberlin
2-pole filter), which, for example, is known as an "Oberheim" filter. With FILTOX two such
modules were cascaded per channel to achieve a switchable 24dB slew rate.
Our digital model of the filter is designed correspondingly so that it delivers the typical
"analog" sound character, but it's especially useful if you want to use internal
overmodulation. Here interaction between cut-off frequency and resonance occurs, which
makes the sound appear "undigital", in a positive way though.
FILTOX – Parameters:
The following filter types are at your disposal:
low pass
band pass
notch / band reject
high pass
Usually these filter types are designed in a way that they can
be toggled. With the Chamberlin filter, however, a "state-
variable" network is used, which means that all filter types can
be taken from taps simultaneously. So why leave the taps
static, when they can be processed dynamically...?
The actual filter circuit provides the following parameters: