VST Effects plugin

Rechoir is a delay effect where all the echoes can either harmonize with the source signal or be pitch shifted manually.

Harmonic changes can be synced to the tempo and time signature of your sequencer, keeping both the echoes as well as their pitch modulations strictly timed to your composition.

All of Rechoirs parameters can be automated or linked to hardware controllers for maximum control and flexibility when used in realtime during a performance.


Rechoir's UI is remarkably straightforward for an plugin, though it is still encouraged to tweak through experimentation and discover some happy accidents.

If you DO wish to know what is happening under the hood (for instance filter cutoff in Hz or LFO / delay speeds relative to musical notation) you can consult the message display when viewing the plugin in minimized mode within your DAW.

Additionally, you may delve into the following explanation of the controls.

Delay section

The echoes generated by the plugin are bound to the tempo and time signature of the host keeping the echoes in time.

  • Time controls the interval between the input signal and the echo, from a short slapback to a full measure in length, adjustable in 16th note intervals.
  • Feedback the amount of echo signal that is being fed into itself. At high levels this can create big washes of sound and self oscillate.
  • Mix balances the amount of input (dry signal) and the delayed output (wet signal).
  • Freeze holds and repeats the echo in a fog of dense reverberation.

Pitch section

The pitch shift section can control the pitch of the echoes, relative to the input signal. As such it is possible to harmonize the echo with the source signal.

  • Shift provides fine grained control over the echo's pitch. When at the 12 'o clock position, no pitch shifting is applied. Turn left to shift the pitch down and turn right to shift the pitch up. The maximum range is a full octave.
  • Scale provides perfectly pitched intervals to instantly harmonize using a specific scale. When most left the scale is disabled, when turning right the scales goes through neutral harmonies, major keys and finally minor keys. When a scale is selected, the Shift control is disregarded. Turn full left to disable.

Choir section

The Choir controls add movement to the pitch shifted signal, allowing the echoes to modulate between notes. The movement is LFO based and synced to the host tempo and time signature.

When Scale is disabled, the oscillators will modulate between the original pitch and the pitch defined by the Shift control. When Scale is enabled, the oscillators will modulate between the two harmony notes defined by the scale.

When Sync is enabled, the oscillators are synchronized and will step through the pitch shifts at the same time.

  • Mod enables/disables the oscillators, when disabled the entire choir section is bypassed.
  • Odd & Even allow you to tweak the duration of the oscillators cycle all the way from 4 measures down to a single 16th note. "Odd" applies to the odd input/output channels and "Even" to the even input/output channels. ReChoir supports mono, stereo and multi channel signals.
  • Sync will link the oscillator speeds (synchronizes "Even" LFO with "Odd" LFO).

Decimator section

This adds some dirt to the echo signal by reducing its sampling resolution. Together with the filter resonance control, this can also introduce a movable harmonic peak.

  • Grit by turning right, the echo signal is degraded in resolution to provide a dirtier sound

Filter section

By using the filter section you can control the brightness of the overall echo effect.

  • Cutoff allows adjustment of the cutoff frequency of the delayed (wet) signal from 30 Hz up to 20 kHz
  • Resonance sets the resonance of the filtered signal