Each oscillator provides control over the polarity of its waveform.
Oscillator #1 provides manual control using the INV switch located next to the waveform
selector. This can be useful when using the oscillator as a modulator while being sync'd to
the GATE input.
Oscillator #2 provides voltage control of its waveform polarity using the VC INV jack at the
bottom of the panel. Audio speed VC inverting offers some very nice metallic effects. To
use this, patch Oscillator #1's output to the VC INV jack while listening to Oscillator #2 or a
mix of the two. Changing waveforms on both oscillators offers many different results.
Inverting Waveforms
Q169
Osc+
Each oscillator offers a sync (synchronize) input which allows a signal, usually from another
oscillator to restart the waveform at some point within its cycle. This is a classic effect found
on many synthesizers sometimes referred to as Hard Sync.
A toggle switch near the waveform knob controls sync for each oscillator. The center position
is off
-
no sync. The upper position syncs the oscillator to the other oscillator. Typically a
slower oscillator will sync the faster oscillator for the best effects. Oscillator #1 is typically
used as the slower oscillator.
The bottom position causes the waveform to sync to the GATE IN jack. This is useful when
using an oscillator as a modulator where each press of a key produces the same waveform
progression.
Sync
Oscillator #2 can be controlled by the internal Sample & Hold circuit. The switch can be found
next to the waveform knob. This circuit captures the waveform from Oscillator #1 and feeds it to
Oscillator #2's pitch. The speed of the capture is clocked by the LFO.
Normally when using the Sample & Hold feature, Oscillator #1 is run at a fixed speed, and Oscil-
lator #2 is listened to. Oscillator #2 can be controlled by a keyboard during this process or free
running.
The amount of waveform feeding the Sample & Hold is adjusted from Oscillator #1's AMP control
(Amplitude).
Use Oscillator #1's sine, anti
-
sign or Triangle wave for up and down sequences. Use the sawtooth wave
for descending sequences, or flip the INV switch for ascending. Use the random waveform setting for
random pitches.
Sync Oscillator #1 to a keyboard using the GATE IN for sequences that act the same way each time a
key is pressed.
Sample & Hold
Summary of Contents for Q169 Oscillator++
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