O3A Upmixer - 9.1.6

O3A Upmixer - 9.1.6

Host Support

Host TypeSupport
AAXYes
VST2Yes

Audio

ChannelsContent
Input169.1.6
Output16O3A

Controls

Description

This plugin takes a surround mix prepared for a 9.1.6 system and converts it to third order ambisonics (O3A).

The AAX version of this specific plugin requires Pro Tools 2023.6 or later.

Channels

The channel ordering used is:

ChannelAAXVST
1Front LeftFront Left
2Front CentreFront Right
3Front RightFront Centre
4Left WideLFE
5Right WideLeft Wide
6Left Surround SideRight Wide
7Right Surround SideLeft Surround Side
8Left Surround RearRight Surround Side
9Right Surround RearLeft Surround Rear
10LFERight Surround Rear
11Left Front OverheadLeft Front Overhead
12Right Front OverheadRight Front Overhead
13Left Middle OverheadLeft Middle Overhead
14Right Middle OverheadRight Middle Overhead
15Left Rear OverheadLeft Rear Overhead
16Right Rear OverheadRight Rear Overhead

The plugin is available in the O3A Upmixers plugin library.

Controls

Control: Mode

Two modes are supported, "Inferred" and "Virtual". Generally, "Inferred" is recommended.

ModeDescription
InferredThis mode is optimised for use with material that has been mixed using conventional panning techniques, such as equal-power panning or VBAP. The approach produces smooth transitions when sounds pass between speaker locations.
VirtualThis mode simply places each of the main (non-LFE) audio channels in their appropriate speaker direction. This can be worth trying when the mix has not been put together by conventional panning and the channels have a complex phase relationship.

Control: LFE Gain

Audio from the LFE channel can be mixed into the output by setting this dial. It is added to the stream as an omnidirectional signal.