ALESIS ANDROMEDA A6 User Manual
Page 128

Chapter 5: Oscillators and Filters
126
A
NDROMEDA
A6 R
EFERENCE
M
ANUAL
7. The sine wave outputs of both
OSC 1
and
OSC 2
, plus the output of the
RING
MOD
are routed directly to the
POST FILTER MIX
whose levels are controlled by
the
PRE FILTER
knob. This signal path permits the mixing of these three signals
into the A6’s audio path without filtering.
This direct signal flow from the sound generators, bypassing the filters provides
three distinct advantages when editing Programs. First, since sine waves have no
harmonics, filtering them has no effect on their tone--low
FREQ
settings only reduce
their amplitude. Making it possible to let the sine waves bypass the filters avoids this
situation.
Second, the sine waves available at this point in the mix are in addition to the
waveforms selected in
OSC 1
and
OSC 2
. Mixing in unfiltered sine waves – effectively
adding in unfiltered fundamental waveforms – with whatever waves are currently
being output by the VCOs results in a thicker bottom end that would otherwise be
impossible to achieve.
Third, there are also times when the output of the
RING MOD
sounds best when it is
unfiltered. This direct audio path permits mixing an unfiltered signal from the Ring
Modulator in with its filtered signal. The resulting blend of filtered and unfiltered
RING MOD
signals is a noticeably richer sound.
For envelope shaping of the loudness of these
PRE FILTER
signals, press the
MOD
button and assign an envelope at this point in the mix.