Tesseract Echo

Tesseract Echo is a free, deeply tweakable Multi-Tap Magnetic Tape Delay and FDN Reverb.

Engineered for zero artifacts and maximum character, Tesseract Echo relies on Hermite 4-point interpolation, constant-power panning, and dual-stage diffusion to deliver pristine, wide, and deep spatial effects.

Features:

• 4-Head Tape Engine: Independent level and pan controls per head, with fractional spacing algorithms.
• Non-Linear Tape Filter: 1 pole Highpass and Lowpass filters, and an analog-style Drive stage inside the feedback loop with automatic makeup gain.
• Advanced Modulation: Push into audio-rate modulation or use the "Tape" (Wow & Flutter) and "Stepped Random" LFO shapes for mechanical degradation.
• Karplus-Strong Engine: Tune the delay time to incoming MIDI notes to synthesize physical strings and tuned resonances.
• FDN Reverb & Ducker: A pristine Feedback Delay Network reverb with selectable routing, plus a built-in sidechain compressor to duck the wet signal against the dry input.

{See video at top of page}