Module-maker WMD’s newest Eurorack module, Aperture, is now shipping.

The Aperture is a bandpass filter with variable bandwidth and what the module creator calls “a slew of awesome features” that give the user a high degree of control over the sound they create.

Independent tactile and CV controls over the resonance on both sides of the filter band allow for high or low frequency resonance, or both at once. There are also 2 modes of feedback which both affect the way the filter resonates. Dry/Wet mix allows for parallel sounds with ‘a little taste in the back’ or full-on filtered-out sounds.

The video, above, is an example of the Aperture filtering an entire mix. 

Aperture key features:

• 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.

Pricing and Availability

The WMD Aperture bandpass filter module (US $349) is available today, via the WMD website and via dealers worldwide.

WMD will be showing Aperture this week at the Superbooth ’16 event.