Binaural Surround - Auro-3D 9.1, 10.1, 11.1 and 13.1

Binaural Surround - Auro-3D 9.1

Host Support

Binaural Surround - Auro-3D 9.1

Host TypeSupport
AAXYes, input mapped to 7.1.2 (Dolby Atmos) stem
VST2Yes

Binaural Surround - Auro-3D 10.1

Host TypeSupport
AAXNo
VST2Yes

Binaural Surround - Auro-3D 11.1

Host TypeSupport
AAXNo
VST2Yes

Binaural Surround - Auro-3D 13.1

Host TypeSupport
AAXNo
VST2Yes

Audio

Binaural Surround - Auro-3D 9.1

ChannelsContent
Input10Auro-3D 9.1 (mapped to 7.1.2 for AAX)
Output2Binaural Stereo

Binaural Surround - Auro-3D 10.1

ChannelsContent
Input11Auro-3D 10.1
Output2Binaural Stereo

Binaural Surround - Auro-3D 11.1

ChannelsContent
Input12Auro-3D 11.1
Output2Binaural Stereo

Binaural Surround - Auro-3D 13.1

ChannelsContent
Input14Auro-3D 13.1
Output2Binaural Stereo

Controls

Description

There are four Binaural Surround plugins for processing Auro-3D surround mixes. These correspond to each of the Auro-3D 9.1, Auro-3D 10.1, Auro-3D 11.1 and Auro-3D 13.1 speaker layouts. They convert the mixes to 3D stereo to be listened to on headphones.

The 3D aspects of the stereo are synthesised using HRTF data. This models how sound from different directions is changed as it passes around the head.

Channels

The channel orderings used for the Auro-3D formats are:

Auro-3D 9.1Auro-3D 10.1Auro-3D 11.1Auro-3D 13.1Channel Name
1 1 1 1 Front Left
2 2 2 2 Front Right
3 3 3 3 Front Centre
4 4 4 4 LFE
5 5 5 5 Surround Left
6 6 6 6 Surround Right
- - - 7 Back Left
- - - 8 Back Right
7 7 7 9 Height Front Left
8 8 8 10 Height Front Right
9 9 9 11 Height Surround Left
10 10 10 12 Height Surround Right
- - 11 13 Height Front Centre
- 11 12 14 Top Ceiling

Please note that when Auro-3D 9.1 is mapped to 7.1.2 (Dolby Atmos) for AAX, no attempt is made to map to channels where they correspond. The channels simply appear in the order above.

The low frequency effect channels are not used.

If you are using the recommended "Inferred" mode, make sure you are using the right plugin for your content, rather than just patching to some of the channels of 13.1. This will give better results.

The plugin is available in the Binaural Surround 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.