The Aperture is capable of simple filtering, self oscillation FM timbres, nasty acidic squelches, and capturing images of UFOs descending from the heavens on a cold winter’s night. The concept is a bandpass that ranges from transparent to gnarly, with precision controls that behave under stress, all while being joyful to wreak havoc with.
Features include:
- Variable bandwidth via tactile and CV controls
- Eight pole filter core
- Independent resonance and self oscillation of both sides of the filter with CV
- Feedback circuit with two modes and CV
- Input level VCA
- Additional CV for opening the band either side of Center
- V/oct tracking
- Temperature compensated
- Dry / Wet mix for parallel filtering sounds
Controls
*LEDs along the top indicate width and position of the filter
Knobs
Frequency: Controls the center frequency
of the band
Width: Controls the width of the band.
Freq CV: Attenuverter for the CV input for precise
control over the Frequency of the filter.
HP Res: Controls the amount of resonance on the
High Pass side of the filter.
LP Res: Controls the amount of resonance on the
Low Pass side of the filter.
Input Level: Attenuates the input level.
Unity at 12o'clock, total gain of 6 dB
Feedback: Controls the amount of feedback for
more self oscillation and squelchy behavior.
Dry/Wet Mix: You know what this means ;)
Width CV: Attenuverter for CV control
over the width of the filter.
Jacks
1V/ Oct: The aperture’s cutoff frequency will track
at 1V/oct. This is the input for that.
In LVL: Input for CV control over the input
level attenuation.
Freq: CV input for control over the cuttoff frequency.
Width: CV input for control over the width of the band.
FDBK: CV input for control over the feedback amount.
Input: This is where your audio signal you
want to filter goes.
Output: This is where the filtered audio
signal comes out.
HPCV: CV input for independent control over the
cutoff frequency on the high pass side of the filter.
LPCV: CV input for independent control over the
cutoff frequency on the low pass side of the filter.
HP Res: CV input for control over the resonance on the
high pass side of the filter.
LP Res: CV input for control over the resonance on the
low pass side of the filter.
