UAD Powered Plug-Ins Manual - 200 - Chapter 21: Moog Multimode Filter
CHAPTER 21
Moog Multimode Filter
Overview
If UA were able to conceive a product with Moog, what would it be? The
answer is revealed in the new UAD Moog Multimode Filter, which delivers the
first truly analog-sounding VCF (voltage controlled filter) emulation made for
mixing, performing, creating, or destroying. The Moog Multimode Filter is a
‘digital-only’ tabletop filter set that combines the best of Bob Moog’s classic
designs with select features from his final Voyager instrument. UA modeled
the analog behavior of the historical 4-pole ladder filter conceived by the
world’s most recognizable electronic instrument maker right down to the
self-oscillation, saturation and non-linearities of its analog counterpart. As the
name suggests, the heart of the Moog Multimode Filter is the switchable Low-
pass, Highpass and Bandpass filter that allows Moog’s signature self-oscilla-
tion and extreme resonance in any of the three modes, bringing a new level
of sophistication to Moog filter designs of the past.
The UAD Moog Filter algorithm uses a special filter structure that was created
especially to eliminate “digital” artifacts for time-varying filters. An expensive
DSP technique was used to calculate the response of the nonlinear feedback
loop surrounding the saturation and filter elements.
Warning: Like most resonant filters, UAD Moog Filter has the potential to
create unpredictable sonic results that can result in unexpected jumps in out-
put amplitude. Depending on the source material, input levels, and parameter
values, the filter output can suddenly get extremely loud, with the potential to
damage speakers and/or hearing. This condition is particularly susceptible
when the simultaneous conditions of high gain, low filter cutoff, and high res-
onance values are applied, and/or when the LFO sweeps into these condi-
tions. Use caution and/or low monitoring levels when dialing in extreme
parameter values to avoid speaker and/or hearing damage!
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