O3A Decoder - Cube

Host Support

Host Type	Support
AAX	Yes, output mapped to 7.1
VST2	Yes

Audio

	Channels	Content
Input	16	O3A
Output	8	Speaker feeds for cube (mapped to 7.1 for AAX)

Controls

Method

Description

This plugin takes a third order ambisonics (O3A) mix and decodes it as speaker feeds for eight speakers set out at the corners of an cube.

Channels

The channel ordering used is:

Channel	AAX/VST
1	Lower Front Left
2	Lower Front Right
3	Lower Back Right
4	Lower Back Left
5	Upper Front Left
6	Upper Front Right
7	Upper Back Right
8	Upper Back Left

Note that these are mapped directly onto a 7.1 output in the AAX version of the plugin.

The plugin is available in the O3A Decoding plugin library.

Controls

Control: Method

Three methods are supported, "Basic", "Reconstruction" and "Tinted Reconstruction". Generally, "Basic" is recommended except where the speaker rig to be used for playback is known and has been set up accurately.

Method	Description
Basic	This method produces a resilient decoding which should play well on a range of speaker systems including large venues.
Reconstruction	This method controls the soundfield at the centre of the listening space to produce a clearer spatial image. It relies on the speaker layout being set up accurately.
Tinted Reconstruction	This variant of the Reconstruction method performs HRTF-based tinting on the audio stream to strengthen the spatial image. Again, it relies on the speaker layout being set up accurately.

O3A Decoding