11
Resonance
Q:
The
Q
knob determines the level of feedback from the filter’s output
to its input.
•
This is also known as the
Resonance
,
Emphasis
, or
Feedback
.
•
With resonance introduced, the cutoff frequency of the low pass and
high pass filters accentuate while the centre frequency of the band
pass and notch filters inversely scales in amplitude.
•
Turning the knob clockwise will increase resonance.
•
Turning the knob anticlockwise will decrease resonance.
Q CV Input:
The
Q CV Input
is a bipolar control voltage input for
Q
.
•
Control voltage is summed with the knob position.
•
Input range: -/+ 8V.
Feedback Toggle:
The
Feedback Toggle
enables and disables internal
routing of the
Band Pass Output
to
I-ō47
input. When enabled,
increasing
Q
can result in self-oscillation.
•
If the toggle is in the up position, feedback is enabled.
•
If the toggle is in the down position, feedback is disabled.
•
If the
Q
knob is at its maximum value and there is no input signal,
I-ō47
will self-oscillate as a stable sine waveform.
Strike Input:
Rising edge signals present at the
Strike Input
excite the
resonance of
I-ō47
.
•
Gate and trigger signals present at the
Strike Input
will ping
the resonance.
•
Audio rate waveforms present at the
Strike Input
result effects similar
to hard synchronisation.
•
It’s important to note that the
Strike Input
is not a low pass gate input
and will not affect the cutoff frequency. Only the resonance
is affected.
