O7A Injector - N3D

O7A Injector - N3D

Host Support

Host TypeSupport
AAXYes, input mapped to standard SN3D ambisonics


Input64N3D/ACN Ambisonic Audio (mapped to standard SN3D ambisonics for AAX)


This plugin imports a seventh order ambisonic mix prepared in other tools using the "N3D" convention. N3D is a close relative to SN3D, which is used natively by these plugins. The "ACN" channel ordering convention is typically used in both cases, and is expected by this plugin.

The conversion uses level changes only. You may want to use the O7A Visualiser to check that the results make sense.

N3D is used in MPEG-H 3D Audio.


Please be aware that N3D and SN3D are similar to each other, but not the same. Be very careful to convert where necessary as it may not be immediately obvious if mistakes are made. Do not guess! If you get this wrong it is likely to result in level, blurring or sharpening errors which may not be immediately obvious on simple decoders.

Other Conventions

Note that other plugins are available to convert to and from ambisonics using the FuMa convention. See O7A Decoder - FuMa and O7A Injector - FuMa.


This plugin expects seventh order N3D input. If you have lower order material (with a lower channel count), feed this to the first input channels and feed silence to the rest.

Alternatively, the O7A Injector - O1A, O2A or O3A plugins can be "misused" to increase the order of the N3D material as this is a rare case where a plugin will work correctly for both SN3D and N3D.

The plugin is available in the O7A Upmixers plugin library.