Make Noise XPO, Руководство пользователя

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The Waveform Outputs (cont.)
Stereo Outputs
Along the right side of the XPO are three pairs of Stereo outputs that are derived from the oscillator core. These
outputs provide great audio sources for stereo processing modules such as QPAS or Mimeophon. All three output pairs
receive timbral modulation from the Modulate L/R parameters, and can be used in Mono via their Left output when the
Right is unpatched. Additionally the Vari-Timbre and Wave Foldingoutputs receive timbral modulation from the Center
parameter on both outputs at once.
The Pulse Width Modulation outputs utilize a classic PWM circuit to modulate the width of a
pulse wave continuously from 0% (silence) at full CCW on the Modulate controls, to 50%
(square wave) around 12:00, to ~99% (a very thin pulse) at full CW. Using control voltage, the
pulse-width can be increased all the way to 100% (silence again).
Pulse width modulation tends to create alternate sets of even and odd harmonics. Since the XPO offers two independent PWM
parameters on the two outputs, interesting combinations can be heard when monitoring in stereo and modulating both sides
simultaneously at the same or different rates and amounts.
The Left and Right PWM outputs are controlled independently by the Modulate controls. When the Right output is unpatched,
the Left output contains a sum of the Left output and an inverted copy of the Right output. Using just the Left output in this
case for a Mono signal allows for interesting phasing behaviors when modulating one or both waves.