Altar is a voltage controlled 3-pole, 18dB/octave state variable filter.
Altarfilter configuration can be smoothly crossfaded from BP to LP to HP. This unusual filter type arrangement brings out very nice harmonics and nuances. It is really suited to CV control. The CV input has an attenuverter.
Resonance is under voltage control with attenuverter as well allowing for great timbre modulations. It is particularly useful to create accent patterns à la 303 which boost the resonance a bit.
You can beef up the signal atAltar‘s input with the gain knob. It will distort the filter core for wild sounds.
The filter tracks 1V/oct for 4-5 octaves and can turn into a very sweet sine oscillator. Try using it withMiasma as a waveshaper!
Altar has been designed by Mathieu Fröhlich (creator of Squarp’s Hermod) as part of a dream synth he is working on.
Power: 35mA @+12V / 30mA @-12V
Gain control to distort the filter core
Color knob to crossfade from band pass to low pass to high pass filter
Frequency with 1V/Oct control
Attenuverters on Color, Resonance and Frequency CV
1V/Oct with trimmer on the PCB, tracks up to 4-5 octaves
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