Filter boards compatible with Little deFormer Zero, Urano, Little deFormer 3 (analog opt. 1 or 3 required), Tiny LD (VCF conn. required), EuroBoard, Anamono X and Anamono Xmini
VCF1 -Single Filter
Single analog filter. LPF, BPF and HPF modes, analog distortion and analog positive and negative feedback.
Parameters:
Cut:Filter cutoff frequency.
Peaks:Second filter block cutoff frequency, either as an offset to Cut, or as an absolute value, depending on the setting of the Peaks parameter on VCF edit page 2.
Reso:Filter resonance.
Cut3/Feed:Negative values: Negative analog feedback, positive values: Positive analog feedback.
LPF:Switches the filter low pass output on or off.
BPF:Switches the filter band pass output on or off.
HPF:Switches the filter high pass output on or off.
Out1/2:Turns up the analog distortion effect on the filter output 2.
VCF2 -Dual Filter
Dual analog filter. Filter1: LPF, BPF and HPF modes, Filter 2: BPF, analog distortion and analog negative feedback.
Parameters:
Cut: Filter 1 cutoff frequency.
Peaks: Filter 2 cutoff frequency, either as an offset to Cut, or as an absolute value, depending on the setting of the Peaks parameter on VCF edit page 2.
Reso: Filter resonance.
Cut3/Feed: Negative analog feedback.
LPF: Switches the filter 2 low pass output on or off.
BPF: Switches the filter 2 band pass output on or off.
HPF: Switches the filter 2 high pass output on or off.
Out1/2: Turns up the analog distortion effect on the filter output 2.
VCF3 -Trippple Filter
Trippple analog filter. Output 1/2 mixes between LPF+BPF+HPF and 3xBPF.
Parameters:
Cut: Filter 1 (LPF) cutoff frequency.
Peaks: Filter 2 (BPF) cutoff frequency, either as an offset to Cut, or as an absolute value, depending on the setting of the Peaks parameter on VCF edit page 2.
Reso: Filter resonance.
Cut3/Feed: Filter 3 (HPF) cutoff frequency, either as an offset to Cut, or as an absolute value, depending on the setting of the Cut3 parameter on VCF edit page 2.
LPF: Switches the filter 1 low pass output on or off.
BPF: Switches the filter 2 band pass output on or off.
HPF: Switches the filter 3 high pass output on or off.
Out1/2: Mixes between LPF/BPF/HPF and 3xBPF. Please notice, that all 3 BPF's are always switched on.
VCF4 -Gotharman's First Filter
Gotharman's very first analog filter design. LPF, BPF and HPF modes, unique sound, analog distortion and analog feedback.
Parameters:
Cut: Filter cutoff frequency.
Peaks: Second filter block cutoff frequency, either as an offset to Cut, or as an absolute value, depending on the setting of the Peaks parameter on VCF edit page 2.
Reso: Filter resonance.
Cut3/Feed: Negative values: Negative analog feedback, positive values: Positive analog feedback.
LPF: Switches the filter low pass output on or off.
BPF: Switches the filter band pass output on or off.
HPF: Switches the filter high pass output on or off.
Out1/2: Turns up the analog distortion effect on the filter output 2.
VCF6 -SP Filter V2
Based on the output stage of the Emu SP12/SP1200, but with controllable cutoff and resonance, and an added analog fuzz distortion.
The input signal is converted to 12 bit digital (switchable to 6 bit for absolute lo-fi), and goes into a 24dB SSI2144 analog low pass filter. The sample rate can be adjusted and modulated from 0 KHz (audio stopped) to around 60 KHz. The signal to the AD converter is gained by an analog stage, so it is possible to make the converters clip.
Parameters:
Cut: Filter cutoff frequency.
Reso: Filter resonance.
Rate: Sample Rate. 0 to 60 KHz.
Bits: Bit depth. 12 or 6 bit.
Out1/2: Adds an analog Fuzz effect, when turned up.
VCF8 -Dual Spaze Filter
Four 24dB resonant filters, two that are switchable between HPF and LPF modes and two that are always in LPF mode. This gives four resonant peaks, and makes this filter ideal for formant sounds. It is also great for bass sounds and a lot of other sounds. It is based on a bunch of the new great SSI2144 filter chip.
It is organized as two chains of HPF/LPF + LPF in series. The two chains can be connected in parallel or serial to each other, and they output to each of their own filter output.
Parameters:
HpCut: HPF/LPF 1 and 2 filter cutoff frequency. Space between the 2 filters can be adjusted with Space.
LpCut: LPF 1 and 2 filter cutoff frequency. Space between the 2 filters can be adjusted with Space.
Reso: Filter resonance of all 4 filters.
Space: Space between the cutoff frequencies of the two filter chains.
HPF2: HPF2 filter mode HPF or LPF.
HPF1: HPF1 filter mode HPF or LPF.
Conn: Connection of the 2 filter chains. Ser (serial) or Par (parallel).
Out1/2: Mix between filter output 1 (HPF/LPF + LPF chain 1) and filter output 2 (HPF/LPF + LPF chain 2).
VCF9 -Xtra Distortion
Single analog filter. LPF, BPF and HPF modes, analog distortion with Drive and analog positive and negative feedback.
Parameters:
Cut: Filter cutoff frequency.
Peaks: Acts as distortion Drive.
Reso: Filter resonance.
Cut3/Feed: Negative values: Negative analog feedback, positive values: Positive analog feedback.
LPF: Switches the filter low pass output on or off.
BPF: Switches the filter band pass output on or off.
HPF: Switches the filter high pass output on or off.
Out1/2: Turns up the analog distortion effect on the filter output 2.
VCF15 -Vothar8 Filter
The unique sounding filters of the Vothar 8, built with discrete parts. Arranged as LPF and 2x BPF in parallel to each other or as 3x BPF (Output2). Modified so that they can self-oscillate, and so that they distort a tiny bit more at higher input levels.
More info on the original Vothar 8 can be found here:https://tonetweakers.com/products/gotharmans-vothar-8.
Parameters:
LpCut: Low Pass Filter cutoff frequency.
B1Cut: Band Pass Filter 1 cutoff frequency.
B2Cut: Band Pass Filter 2 cutoff frequency.
Reso: Resonance for all 3 filters.
Out1: LPF + 2x BPF.
Out2: 3x BPF.
Out1/2: Mix between output 1 and 2.
VCF16 -Dual Transistor Ladder Filter
Dual 24db ladder filters with drive.
When drive is zero, both filters are in lowpass mode.
When drive is turned up to around 100, both filters will be in bandpass mode (the resonance has to be set to 100 or more).
When drive is turned further up, low frequency compensation will kick in.
When turned up above 256, the filters will start to distort.
Parameters:
CutA: Filter A cutoff frequency.
CutB: Filter B cutoff frequency.
Reso: Resonance for both filters.
Drive: Continuously going from LPF to BPF to low freq comp to distortion. .
Out1: Ladder Filter A.
Out2: Ladder Filter B.
Out1/2: Mix between output 1 and 2.
VCF17 -Dual Multi Mode Filter -For Little deFormer Zero only!
Dual analog multi mode filter.
Made with discrete parts only.
Each filter has eight different modes.
Parameters:
CutA: Filter A cutoff frequency.
CutB: Filter B cutoff frequency.
ResoA: Resonance for Filter A.
ResoB: Resonance for Filter B.
TypeA: Filter A type. 24db LPF, 18db LPF, 12db LPF, 6db LPF, Allpass, 18db BPF, 12db BPF, 6db BPF.
TypeB: Filter B type. 24db LPF, 18db LPF, 12db LPF, 6db LPF, Allpass, 18db BPF, 12db BPF, 6db BPF.
Out1: Filter A.
Out2: Filter B.
Out1/2: Mix between Filter A and B.
