Filter
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Chapter 5: Oscillators and Filters
ANDROMEDA A6 REFERENCE MANUAL 129
DISPLAY
PAGE PANEL LABEL
PARAMETER
DISPLAY
OPTIONS
or RANGE
DESCRIPTION
FILT 1
or
FILT 2
ENV 2 AMOUNT ENV2
0.00 ···
100
.
00
This parameter is used to set the amount of
Envelope 2 modulating the selected filter.
OFFSET
-100.00 ···
+100.00
This parameter sets the offset for ENV 2.
KEY TRACK KEYTRK -100.00 ···
+100.00
This parameter is used to set the amount of filter
tracking by the keyboard. At a setting of
50.00,
the selected filter will be tracked by the keyboard
at “1 volt-per-octave” which is the same amount
as the VCOs. This means that the VCOs and the
selected filter will be tracked by the keyboard in
parallel. See page 121 for more details.
OFFSET
-127 ···
+127
This parameter sets the offset for KEYTRK.
Unlike the other offset, it is quantized in
semitones: if you want the filter to be an octave
lower when it's tracking the keyboard, set this to
–12.
FILT 1
(menu;
affects
both)
(none) CV IN
0.00 ···
100.00
This parameter sets how much a control voltage
(if one is plugged into the
CV FILTER INPUT jack on
the Andromeda's rear panel) will affect the filter
frequency of both Filter 1 and Filter 2, if the
filter's
CV SRC is set to EXT IN. If CV SRC is set
to
OSC FM, this parameter sets the amount the
filter will be modulated by the oscillator.
FILT 1
or
FILT 2
(none) CV SRC
This parameter allows you to select either an external input
(typically from an external envelope generator) to modulate
the filter, or to FM modulate the filter by
OSC 1:
(OFF)
If you turn Soft Knob 8 full counter-clockwise, so
that neither of the following settings are
highlighted, there will be no effect on the filter,
regardless of the setting of the
CV IN control.
EXT IN
When EXT IN is in reverse type in the
display, the filter may be controlled by a signal
plugged into the
CV FILTER INPUT jack on the
Andromeda's rear panel.
FILTFM
When selected, the filter may be FM modulated
by the output of
OSC 1 and/or OSC 2. For
FILTFM to work, the oscillator's FILTFM output
must be enabled (on the Oscillator's
WAVE page
/
FILTFM parameter). The level of FM
modulation is affected only by the
CV IN
parameter, not by any setting of the PRE
FILTER MIX
knobs. For more information, see
"What is FM?" earlier in this chapter.