Introducing the Grendel Formant Filter in Eurorack modular format.
Four analog bandpass filters in parallel, plus a control voltage processor to articulate vowel-like tones from your audio input.
The Grendel Formant Filter has three control voltage (CV) inputs: Size, Articulator X, and Articulator Y. These are optimized for 5 volt analog control signals,
but can accept up to +/-10 volts.
The Size parameter moves all four BPFs in parallel. This affects the overall size of the filter’s ‘mouth’, from oversized to midget.
Articulators X and Y work together to select vowel tones from a two-dimensional map related to the IPA Vowel Chart. For optimum control, these inputs can be connected to an analog joystick controller or two channels of a MIDI-CV converter. The ideal voltage range for controlling Articulators X and Y is +/- 2.5 volts, or 0..+5 volts.
Suggested signal sources for the CV inputs are LFO, envelope generator, MIDI-CV converter, analog joystick controller, etc.
- Size Control
- Size CV Input
- Articulator X Control
- Articulator X CV Input
- Articulator Y Control
- Articulator Y CV Input
- Gain Control
- Audio In/Out
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- Eurorack Format
- 12HP Width
- 30mm Depth
- Reverse Polarity Protection
- +12v: 65mA Current Draw
- -12v: 65mA Current Draw