Exploring Spectravox; Filter Bank - Moog SPECTRAVOX User Manual

EXPLORING SPECTRAVOX

Spectravox is a 10-band spectral processor whose modular nature means that its various
components—an analysis filter bank with envelope follower outputs, a shifting synthesis filter bank with
VCA inputs, and carrier generators—can all be used together or separately. This section will guide you
through your Spectravox, touching on all of its controls and components, and hinting at the many ways
you can explore these further.
There are two main modes for Spectravox, selectable by the MODE switch: FILTER BANK and
VOCODER. To begin, let's explore Spectravox as a Filter Bank.

FILTER BANK

Let's begin by matching Spectravox to the figure above—an "initialized" state for using Spectravox
as a filter bank. Set each FILTER BAND all the way down, RESONANCE all the way down, SHIFT LFO
AMT all the way down, VOLUME mostly up, and make sure the MODE switch is set to FILTER BANK
and the VCA MODE to ON. These are the most important settings for the moment, but match all your
settings to the figure so that we're on the same page moving forward. Connect the rear AUDIO OUT /
of Spectravox to some kind of monitoring system if you haven't already (a mixer, an interface, or just
some headphones). You won't hear anything just yet.
ONE FILTER
Now, begin to raise the level of filter 5. As you raise the level to its maximum,
you will hear sound fading in—this is the sound of the carrier (currently a mix
between the VCO and NOISE) through filter band 5.
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