Trace (interpolating scanner) // audio & CV morphing from DivKid & Vostok Instruments

Trace on modulargrid

Trace manual

Trace is a four-channel Interpolating Scanner created in collaboration with Vostok Instruments.

Introduced by Jurgen Haible in 1994 and later improved by Donald Tillman in 1999, the Interpolating Scanning circuit is a hybrid between a signal selector and a crossfader. 

The circuit morphs between the inputs, fading from one to the next as the voltage control rises. The Trace version of this classic circuit comes with a custom, fine-tuned slope response that prioritizes a smooth transition between the inputs, providing interesting middle points between the channels and improving its behavior when controlled by external CV signals.

Its clean and playful layout makes Trace a powerful tool for adding a new layer of depth and playability to your patches. 

From waveform morphing and CV-controlled transitions, to audio-rate scanning. Trace brings a new horizon of patching possibilities to any system.

FEATURES

• Four channels
• DC-Coupled inputs for use with both audio and CV signals.
• Custom fading slope designed to improve the response on middle positions.
• CV-controlled scanning with onboard attenuation and inversion of the modulation signal.
• Low noise analog VCA circuits.

SPECS

• Size: 4HP 
• Current draw: +/-12V: 70mA, +5V: 0mA 
• Depth: 32mm (including power cable) 
• Input Impedance: 51kΩ (Signal inputs), 100kΩ (Scan CV input)
• Output Impedance: 1kΩ