Dual-Channel Effects Processor and Feedback Synthesizer

The Laboratory is a dual-channel signal processor designed around four interconnected feedback networks, multi-mode filters, dynamic delays, and an integrated modulation engine.

Developed in collaboration with Berlin pedal designer akkusativ, this module functions both as an end-of-chain stereo processor and an autonomous noise generator. Its architecture routes incoming audio through dual signal paths tied directly to four internal feedback loops, allowing you to build spatial delays, saturated chorus textures, or self-oscillating audio-rate chaos without needing an external signal source.

In operation, the system transforms quickly from a flexible utility into a unstable, physical instrument. Sweeping the feedback path controls drives the internal loops past unity gain, pushing the circuit into rich self-oscillation that responds dynamically to filter sweeps and delay timing adjustments. The global Modulator section switches between an LFO and a transient envelope, delivering two inverted and two normal CV outputs to modulate delay times or filter cutoffs across both channels simultaneously.

Because the internal feedback paths self-oscillate violently when pushed to extremes, output levels can jump unexpectedly during heavy feedback sweeps. Keeping downstream monitor levels attenuated or using an output limiter is essential when exploring its high-gain territory.