What Ambisonic orders does the IEM Plug-in Suite support?

Updated

The IEM Plug-in Suite supports Ambisonic plug-ins up to 7th order. That is the top figure stated in the suite's own description, and it applies across the Ambisonic tools in the collection — for example, the Stereo Encoder is documented as encoding mono or stereo signals into the Ambisonic domain "up to 7th order." If your spatial audio work needs higher-order Ambisonics rather than first-order only, this suite is built for that range.

What "up to 7th order" means in practice

Ambisonic order determines how much spatial resolution the encoded sound field carries. Higher order means more channels and a more detailed directional image, which matters when you want precise placement or a convincing enveloping scene rather than a coarse left/right sense of space.

The suite is described as including Ambisonic plug-ins up to 7th order, so the practical takeaway is:

  • You can work at orders from low (first-order) up through 7th, depending on the plug-in and your project.
  • The higher orders are the reason the suite is relevant to immersive and spatial audio production, not just stereo or basic surround.
  • Because order affects channel count, expect higher-order sessions to use more tracks and more processing.

Which kinds of spatial audio work it suits

The suite is created by staff and students of the Institute of Electronic Music and Acoustics, and its featured plug-ins point to composition, sound design, and spatial mixing rather than generic mixing only.

Plug-in What it does Why order matters
Stereo Encoder Encodes mono or stereo audio into the Ambisonic domain, up to 7th order; sets orientation, width, rotation You choose the encoding order, so the spatial precision of the source depends on it
Granular Encoder Ambisonic granular synthesis; turns any mono or stereo signal into an enveloping scene or fine particles Places granular material in the Ambisonic field
Room Encoder Puts a source and listener in a virtual shoebox room and renders over 200 wall reflections Used to improve externalization, e.g. for binaural playback
MultiBand Compressor Splits the Ambisonic input into four bands, compressed individually, without altering the spatial image Operates on an Ambisonic signal, so it preserves the spatial image
DualDelay Delay with sync-to-DAW, tap delay, BPM-based times, plus rotation and warping of the signal Rotation and warping act on the spatial signal

The pattern: encoding plug-ins set the order, and processing plug-ins are designed to work on the resulting Ambisonic signal without wrecking the spatial image.

Before you commit to a version

The suite is free and open source, with a download and release page plus source code available. One thing to check before opening an existing project: versions v1.16.0, v1.15.0, and v1.3.0 introduced breaking changes, and projects made with earlier versions might not behave as expected. The site points to a Breaking changes article and a ChangeLog for details. The latest version listed is v1.16.0, dated 30th September 2026.

So if you are starting fresh, 7th-order Ambisonics support is available; if you are reopening older work, verify the version notes first.