Noise/External Control - Alesis ANDROMEDA A6 Reference Manual

Modulator, using the sine waves of
sine waves have no harmonics. This will allow you to hear the Ring Modulator
produce a waveform with the least complexity.
Different results are obtained by using two square waves or two sawtooth waves as
these waveforms contain numerous harmonics which are also multiplied together.
Next try multiple waveforms in each VCO:
or two square waves with different pulse widths. While you're testing out different
pulse widths, you may also want to add pulse width modulation (press the
button and make changes to the assigned LFO's square wave) to hear what happens.
You may also want to experiment with different VCO tunings – experiment with the
,
SEMITONE CENTS
them) with a slow LFO or

NOISE/EXTERNAL Control

The
NOISE/EXTERNAL
level of the external
the four audio sources are selected in turn (or turned off) by repeatedly pressing the
input button; the current Noise/External source is shown by LEDs on the top panel
and in the display. Only one source can be selected at a time. But Filter Feedback is
on its own switch, and when this switch is on Feedback is added at a fixed amount to
the
NOISE/EXTERNAL
NOISE
The A6 provides a single noise generator that is available to all voices. Noise is
produced by circuit that outputs nearly all audible frequencies at once, called
wideband audio. The result is an unpitched signal that sounds similar to the "static"
you hear on a radio when it's tuned between two stations.
Noise is often used to simulate wind, thunder and explosions. When used subtly,
noise can embellish musical sounds created with the VCOs by adding breath effects
to brass and woodwinds, for example.
Noise is generated in three "colors": white, pink and red. These are names that refer
to the frequency range of the noise signal. White noise (indicated by the
the front panel) selects the entire range of noise at identical levels regardless of
frequency. White noise sounds the brightest and fullest of the three. Pink noise
(indicated by the
white noise. Red noise (the
least bright of the three noise sources.
Pressing the button to the left of these LEDs switches among the three noise sources
plus
AUDIO EXT IN
A A6 R
NDROMEDA EFERENCE
Chapter 8: Pre Filter, Post Filter and Voice Mixes
OSC 1
and knobs. Try modulating the frequency of a VCO (or both of
FINE
.
ENV 1 (PITCH)
knob controls the initial level of three varieties of
and the internal
FILTER AUDIO INPUTS
input amplifier controlled by the
LED) reduces the high frequencies and sounds less bright than
P
LED) has even more high end removed and sounds the
R
, described next.
M
ANUAL
and is a good place to start because
OSC 2
plus , plus
SAW TRI SQR
FILTER FEEDBACK
knob.
NOISE/EXT
, plus
TRI SQR SAW
PWM
, the
NOISE
. Each of
LED on
W
185