intellijel/bifold
Bifold
A dual-channel analog wavefolder combining a Buchla-inspired parallel 'deadband' folder (P channel) and a Serge-inspired serial folder (S channel), linked by a voltage-controlled crossfader with extensive CV, feedback, and routing options.958
Capabilities 2
Jacks 9 (6 in / 3 out)
| Name | Signal | Voltage | Description |
|---|---|---|---|
| Inputs (6) | |||
| AUX IN | mixed | — | Auxiliary input added to the P or S folder signal when the respective SYM-X-AUX switch is in AUX position. Normalled to the MIX output when unpatched.958 |
| FOLD P CV IN | cv | -10V to 10V | CV input for controlling the amount of folding on the parallel wavefolder. Normalled to +5V internally when unpatched.958 |
| FOLD S CV IN | cv | -10V to 10V | CV input for controlling the amount of folding on the serial wavefolder. Normalled to FOLD P CV IN when unpatched; normalled to +5V if neither is patched.958 |
| IN P | audio | — | Audio input to the parallel (Buchla-inspired deadband) wavefolder circuit.958 |
| IN S | audio | — | Audio input to the serial (Serge-inspired) wavefolder circuit. Normalled to IN P when unpatched.958 |
| XFADE CV IN | cv | -5V to 5V | CV input for externally controlling the crossfade amount between the parallel and serial folders. Range ±5V, attenuvertable via the XFADE attenuverter.958 |
| Outputs (3) | |||
| MIX | audio | — | Output of the crossfaded mix of the parallel and serial wavefolder circuits.958 |
| OUT P | audio | — | Output of the parallel (Buchla-inspired deadband) wavefolder circuit.958 |
| OUT S | audio | — | Output of the serial (Serge-inspired) wavefolder circuit.958 |
Parameters 12
| Name | Type | Range | Behavior |
|---|---|---|---|
| FOLD | knob | — | Sets the initial amount of wavefolding applied to both the parallel and serial folders. When fully counterclockwise, no signal appears at outputs unless CV is applied or the FOLD attenuators are turned up.958 |
| FOLD P | knob | — | Attenuator for the FOLD P CV input. When fully CW, full CV voltage controls parallel fold amount; fully CCW, CV is fully attenuated. When nothing is patched into FOLD P, internally normals +5V so this knob acts as a 0V (CCW) to +5V (CW) attenuator.958 |
| FOLD S | knob | — | Attenuator for the FOLD S CV input. Works identically to the FOLD P attenuator but governs the serial folder circuit.958 |
| PHASE | switch | — | Inverts the phase of the serial folder signal feeding the XFADE circuit, altering the sonic character at the MIX output and enabling ring modulation when the XFADE knob is centered.958 |
| SYM-AUX P | knob | — | Attenuverter for the parallel folder's SYM or AUX signal. In SYM mode, scales a ±5V DC offset affecting fold symmetry; in AUX mode, attenuates/inverts the AUX IN signal added to IN P; has no effect when SYM-X-AUX P is in X position.958 |
| SYM-AUX S | knob | — | Attenuverter for the serial folder's SYM or AUX signal. In SYM mode, scales a ±5V DC offset affecting fold symmetry; in AUX mode, attenuates/inverts the AUX IN signal added to IN S; has no effect when SYM-X-AUX S is in X position.958 |
| SYM-X-AUX P | switch | — | Three-position switch affecting the signal fed into the parallel folder: SYM adds a DC offset up to ±5V (controlled by attenuverter [5]) to modify wavefolding symmetry; X adds no external voltage; AUX adds the AUX IN signal (attenuated by knob [5]) to the IN P signal.958 |
| SYM-X-AUX S | switch | — | Three-position switch affecting the signal fed into the serial folder: SYM adds a DC offset up to ±5V (controlled by attenuverter [6]) to modify wavefolding symmetry; X adds no external voltage; AUX adds the AUX IN signal (attenuated by knob [6]) to the IN S signal.958 |
| XFADE | knob | — | Controls the crossfade balance between the P-side (CCW) and S-side (CW) inputs feeding the MIX output. When summed XFADE voltage is 0V or below, only the P channel is heard; at +5V only the S channel is heard; between 0–5V a blend of both.958 |
| XFADE attenuverter | knob | — | Attenuverter for the XFADE CV input. Fully CW passes the full CV voltage; fully CCW passes the full inverse; at noon the CV is fully attenuated and has no effect on crossfade amount.958 |
| XFADE P | switch | — | Selects the source for the crossfader's P-side (CCW) input: FOLD OUT P (up) feeds the parallel folder output; IN P (down) feeds the raw parallel folder input, enabling wet/dry blending via the XFADE knob.958 |
| XFADE S | switch | — | Selects the source for the crossfader's S-side (CW) input: FOLD OUT S (up) feeds the serial folder output; IN S (down) feeds the raw serial folder input, enabling wet/dry blending via the XFADE knob.958 |
Firmware history 0 versions
No firmware history recorded.
References 2
- [958]
- [959]