14
Sine Wave Generator:
Summary:
With feedback enabled, peaking the resonance of
I-ō47
forces it to self-oscillate as a pure sine waveform. Once the waveform
is generated, it can then be patched through a VCA as a simple synth
voice patch. This was often the technique to create sine waveforms in the
early days of electronic synthesiser music. In the simplest of contexts, a
second filter in the audio path is not needed, because a sine waveform
only loses amplitude when patched through a filter. This is because there
are no other harmonics to attenuate, only the fundamental.
Audio Path:
•
Connect the
Low Pass Output
of
I-ō47
to the audio input of a VCA.
•
Enable feedback by setting the
Feedback Toggle
to its up position.
•
Set the
Q
knob fully clockwise. Without an input signal,
I-ō47
resonantes as a pure sine waveform.
•
Set the
Coarse
and
Fine
knobs to desired positions. In this patch, the
Coarse
and
Fine
knobs are frequency (pitch) controls.
•
Set the level of the VCA to a desired position.
Output
Gate Signal
1V/Oct Signal