ICST AmbiEncoder OSC to FX

  • 2025-03-16
  • One-minute read

Institute for Computer Music and Sound Technology / (ICST) Zurich University of the Arts

ICST AmbiEncoder sends OSC to FX-Plugins-parameter

Integrating ICST AmbiEncoder with IEM FdnReverb via OSC

This example demonstrates a simple synchronization between ICST AmbiEncoder and IEM Ambisonics plugins, using FdnReverb to apply distance-dependent reverb. The IEM plugins’ OSC interface makes this process straightforward.

OSC <–> OSC Communication

FdnReverb (by IEM) is a CPU-efficient reverb for B-format. The goal is to increase reverb as the source moves further away in the spatialization.

OSC to FX-Reverb

1. Set Up the DAW (Reaper)

  • Create three tracks:
    • ICST Decoder → Stereo
    • ICST Encoder (Mono/Panner)
    • IEM FdnReverb → Reverb processing

2. Configure OSC Communication

  1. Open the ICST AmbiEncoder settings and navigate to the OSC window.
  2. Enable OSC Send for external use.
  3. Add the Dry/Wet parameter from IEM FdnReverb.
  4. OSC Input for IEM FdnReverb: /FdnReverb/dryWet {d}
  5. In IEM FdnReverb, activate the OSC Listener (e.g., Port: 9001).
  6. Click IEM OSC, set the port number, and press Connect (should turn green when active).
  7. Moving the panner in ICST AmbiEncoder will now dynamically adjust the Dry/Wet parameter in FdnReverb.

As the distance increases, reverb intensity will also increase. Experiment with other reverb parameters for additional effects.

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