Future Retro XS - Manual (Page 23)

ANALOG CONTROLS
WAVE C
Wave C can be used as an audio source or a modulation source. Consider this more of an accessory
module to Oscillator A and B. This control provides three sub oscillators, a ring modulator, white noise
source, and access to any external audio source.
The 1/8 setting will select a square wave sub oscillator, which will be one eighth the frequency
(or 3 octave below) the frequency of Oscillator B.
The 1/4 setting will select a square wave sub oscillator, which will be one fourth the frequency
(or 2 octave below) the frequency of Oscillator B.
The 1/2 setting will select a square wave sub oscillator, which will be half the frequency (or 1 octave
below) the frequency of Oscillator B.
TIP: Modulating the frequency of Oscillator B, can also affect the frequency of these sub oscillator
waveforms. The result can sometimes sound like the sub oscillators are syncing their frequencies,
jumping from one tone to another for interesting results.
The RING setting will select the output of the ring modulator. A ring modulator takes two different
input signals, determines the sum and difference of their frequencies, and outputs the results to create
new harmonic combinations. By default one input of the ring modulator is determined by the waveform
selected with the WAVE A control for Oscillator A. The other input of the ring modulator is determined
by the waveform selected with the WAVE B control for Oscillator B. If you wish to ring modulate an
external audio signal, insert it into the AUDIO IN jack, select EXT with the WAVE A control, and
select the modulation waveform with the WAVE B control.
TIP: Ring modulating an external audio source such as a person talking can add sci-fi like effects to the
voice. Try using the sine wave for Oscillator B as the modulation source, which will be more transpar-
ent, and play Oscillator B up and down the keyboard range to create pseudo pitch-shifting effects.
The NOISE setting will select the internal white noise source, which contains an even amount of
frequencies throughout the audio spectrum.
The EXT setting will select any external audio source which is inserted into the AUDIO IN jack.
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