The Pre Filter Mix; The Filters; The Post Filter Mix - Alesis MICRON Reference Manual

6
Programs

The Pre Filter Mix

The outputs of the oscillators, as well as a few other signal sources,
are fed into a virtual mixing board called the Pre Filter Mix. The
job of this mixer is to funnel all of these sources into the inputs of
the next sound processing stage—the filters. For each source, you
can specify its level, which is how loud it should be, and its balance,
which determines how much of it goes to Filter 1 and how much
to Filter 2.

The Filters

The sound produced by the oscillators is very raw, and usually not
suitable to be used directly in an instrument. In order to bring out
the sonic textures you have in mind, you will typically want to
dampen certain harmonics and boost others. This is where the
filters come in. Filters alter the frequency content of the signal,
and can have a drastic effect on the sound. A filter typically allows
you to adjust its cutoff frequency, which represents the range of
harmonics that the filter operates on, as well as its resonance, which
determines how much boost is given to harmonics around the
cutoff frequency. Each of the Micron's voices contains two filters,
and each filter can be one of eighteen different types, each with its
own character and sonic flavor.

The Post Filter Mix

The outputs of the filters need their own virtual mixing board as
well, and that's what the Post Filter Mix is for. For each filter
output, as well as a pre filter signal of your choice, you can specify
a level, which is how loud it should be, and a pan, which determines
how much goes to your left speaker and how much to the right.
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