Rechoir
Key Features
- Tempo-synced delay with slapback-to-full-measure timing in sixteenth-note intervals and host BPM lock
- Pitch-shifted echoes with manual shift control spanning a full octave up or down
- Scale-locked harmonization across major, minor, and modal scales for musically correct intervals
- Choir section with dual LFO-driven oscillators that modulate pitch independently per channel
- Freeze function that captures the delay buffer into a sustained, reverb-like wash
- Built-in decimator for bitcrushed, lo-fi character on the delayed signal
- Full parameter automation and MIDI controller mapping for real-time performance use
Description
Rechoir by Igorski is a tempo-synchronized delay effect that pitch-shifts its echoes to create harmonies from any input signal. Rather than producing faithful repeats, each echo is transposed up or down by as much as a full octave, with optional scale-locked intervals that keep everything musically in tune.
The delay section offers slapback-to-full-measure timing in sixteenth-note steps, host tempo sync, adjustable feedback for dense washes, and a freeze function that holds the current buffer in a cloud of reverb-like sustain. The pitch section lets you dial in arbitrary shifts or snap to predefined scales including major, minor, and modal variants so the delayed taps form chord-like textures around your source.
A dedicated choir section adds LFO-driven modulation to the pitch-shifted signal, with independent odd/even channel oscillators that can run freely or be synchronized. This creates movement ranging from subtle detuning to dramatic pitch sweeps, all locked to your project tempo.
Additional tonal shaping comes from a bitcrusher-style decimator for lo-fi grit and a filter for controlling echo brightness. These processing stages apply only to the delayed signal, leaving the dry input untouched.
Rechoir handles mono, stereo, and multichannel signals with full parameter automation, making it well suited for live performance and controller mapping. The plugin works best on sustained sounds like synth pads and drones, where its harmonized repeats can build rich, evolving textures that sit behind the original signal.
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Frequently Asked Questions
What musical scales does Rechoir support for harmonization?
Rechoir includes several scale presets covering neutral harmonies, major keys, and minor keys along with modal variants. When a scale is selected, the plugin automatically snaps pitch-shifted echoes to musically correct intervals based on the chosen scale, overriding the manual shift control.
How does the freeze function work in Rechoir?
The freeze function captures the current delay buffer and holds it in a continuous, reverb-like sustain. When engaged, the echoes stop progressing and instead loop indefinitely, creating dense ambient washes that can layer underneath new playing.
Does Rechoir work well on percussive or vocal sources?
According to the developer, Rechoir works best on sustained sounds like synth pads and drones where the harmonized echoes have time to develop. It tends to sound less effective on vocals and can produce interesting but unpredictable results on percussive material.
Is Rechoir open source?
Yes, Rechoir is fully open source and hosted on GitHub. The source code can be compiled for Windows, macOS, and Linux. Linux users can build from source since no pre-built Linux binaries are provided.
