Flanger for Elektron Analog Rytm

A barber-pole flanger for the Rytm's send bus: the sweep rises or falls without end, the right side against the left.

Module version 0.1.0-experimental. Base firmware: 1.74.

About this module

FLANGER is one effect in the Modwerk base's send-effect list. Each track sends to it from its SEND page, and it returns in stereo to the mix. Two taps glide the same way through a short delay, half a cycle apart, each faded in and out, so the sweep rises or falls without end; the right side crosses the fades, so its sweep runs against the left's. SPD sets the speed and the direction, FDBK the resonance, positive or negative. It runs at 48 kHz. The DSP is Send FX's FLANGER, unchanged.

• A sweep that never turns back: SPD up or down, 0 stops it.
• Positive or negative feedback.
• Every control can be locked on the FX track.

How to use it

1. Install the module with the Modwerk base; the base carries the send bus, its pages and the effect list.
2. On a sound track, press AMP twice to open SEND and turn A to send the track.
3. Select the FX track and press DELAY twice to open SEND FX; hold FUNC and turn A to choose FLANGER.
4. Turn A to E to shape it, hold FUNC and turn E for the return level LEV, and hold FUNC to read the CPU.

Controls

SPD

Speed and direction of the sweep, -64 to +63: up to 5 Hz either way, 0 stops it.

DEP

Span of the sweep, up to 10.6 ms.

TUNE

Shortest delay, 0.1 to 5.4 ms.

FDBK

Feedback, -64 to +63: negative or positive resonance, up to 86 %.

LPF

One-pole low-pass on the wet sound; 127 is open.

Compatibility notes

• Needs the Modwerk Analog Rytm MKII base with the send bus (the FX list mw_fx); the library offers it only once the site builds with that base.
• One send effect plays at a time: the one chosen on SEND FX.
• The kit keeps the chosen effect and its eight values; Send FX settings saved under MD07 builds are not read.
• A project that chose this effect plays no return and shows MISSING when the effect is not installed, and keeps its values.

Test evidence

Host: the same samples as Send FX's FLANGER over 20,000 blocks of random settings. Unit: test build MB02 reported working by the author (29 Oct 2026). rytm-emu 2ac0f1f: the SEND and SEND FX pages with FLANGER (FL02).