Audio Mixing - Alesis ANDROMEDA A6 Reference Manual

) of the sound wave, an Envelope can also be routed to a VCO for pitch changes.
(AMP)
For this purpose,
control; it can also be routed to
The Tracking Generator, found on the A6's front panel under the
as a MOD source in many display windows, is a circuit that is used to "reshape" a
modulation source. A good example of this is using the Track Gen to reshape the
keyboard control. The A6 uses a standard equally-tempered keyboard, but its
linearity – a term that refers to how its musical intervals are even from octave to
octave and resemble "straight line"– can be significantly changed by the Track Gen
such that all five octaves can be squeezed, expanded or even inverted. The Track Gen
can be applied to many other modulators in order to modify their normal behavior.

Audio Mixing

The A6 provides several points in the sound path where audio levels are mixed. They
are arranged on the front panel into three function groups:
and
FILTER MIX
particular element of the sound indicated by their labels. For example, the
knob in
POST FILTER MIX
To set levels, each knob controls the action of a VCA or Voltage Controlled Amplifier
– a circuit that provides internal signal amplification. Much like the level knobs and
faders on an audio mixer, you use a VCA's knob to control "how much" of a
particular component of the Program. In most cases, the "how much" will be an
audio level, but not always. VCAs provide signal amplification – also known as
"amplitude level" or "more-or-less" control – to things like modulation amounts. The
knob on
ENV 1 AMNT
examples of this.
The
PRE FILTER MIX
generator and the three external Audio Inputs. As the name implies, these
NOISE
signal sources are mixed prior to being processed by the VCFs. On the A6's rear
panel are 1/4" jacks labeled
external audio signals for processing by the A6's filters.
The
POST FILTER MIX
of the VCOs' Sine waves and the Ring Modulator. This is the final mix that is sent to
the output section (via the VCA controlled by Envelope 3).
Referring to our first flowchart in Chapter 3, the
Section. Although the A6's main mixes are set in
this section controls the final output levels sent to the rear panel audio out jacks. At
the bottom of the section the
Program currently being edited: the stereo
eight stereo
the output of a program will go to the Main or Aux outputs (or to neither); but a
voice is always output to its individual output as long as the
switch is ON.
VOICE MIX
Last, the
MASTER VOLUME
output of the Main outs, Aux outs, and headphones, but not the individual Voice
Outs. Unlike the
memory as part of a Program or Mix.
A A6 R
NDROMEDA EFERENCE
is routed to the frequency of
ENV 1
OSC 1.
. The knobs in each group are used to set the level of a
VOICE MIX
controls the level of the band pass ("
and the
OSC 2 ENV 2 AMOUNT
provides controls for blending both VCOs, the
FILTER AUDIO INPUTS
controls the outputs of the two VCFs plus the unfiltered outputs
knob regulates the output of everything in the
LEVEL
and the stereo
VOICE OUTPUTS
knob on the left side of the front panel controls the overall
control, the position of the Volume control is not saved in
LEVEL
M
ANUAL
Chapter 4: Andromeda A6 Overview
. via a rotary front-panel
OSC 2
PROCESS
PRE FILTER MIX
") output of
BP
knobs in the VCFs are good
RING MOD
. These three jacks are used to input
is the unit's Output
VOICE MIX
and
PRE FILTER MIX
and
and
LEFT RIGHT AUX 1-2
. A switch controls whether
HEADPHONES
LEVEL knob
label and
,
POST
FILT 1 BP
.
FILTER 1
, the
,
POST FILTER MIX
jacks plus the
is up and the
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