O1A Decoder - Octagon
Host Support
Host Type | Support |
---|---|
AAX | Yes, output mapped to 7.1 |
VST2 | Yes |
Audio
Channels | Content | |
---|---|---|
Input | 4 | O1A |
Output | 8 | Speaker feeds for octagon (mapped to 7.1 for AAX) |
Controls
Description
This plugin takes a first order ambisonics (O1A) mix and decodes it as speaker feeds for eight speakers set out at the corners of an octagon.
Channels
The channel ordering for the speaker feeds assumes that the speakers are set out clockwise around the room, starting at the front and slightly to the left, so the first two channels are roughly where normal "Front Left" and "Front Right" speakers would be.
The channel ordering and speaker azimuths are:
Channel | AAX/VST | Azimuth |
---|---|---|
1 | Left at Front | +22.5 |
2 | Right at Front | -22.5 |
3 | Front at Right | -67.5 |
4 | Back at Right | -112.5 |
5 | Right at Back | -157.5 |
6 | Left at Back | +157.5 |
7 | Back at Left | +112.5 |
8 | Front at Left | +67.5 |
In the table above, azimuth is measured anticlockwise (left) from the front. Note that these are mapped directly onto a 7.1 output in the AAX version of the plugin.
The plugin is available in the O1A 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. |
- O1A Decoder - 22.2
- O1A Decoder - 3D7.1
- O1A Decoder - 5.1
- O1A Decoder - 7.1
- O1A Decoder - 7.1.2 (Dolby Atmos)
- O1A Decoder - 7.1.4
- O1A Decoder - Auro-3D 10.1
- O1A Decoder - Auro-3D 11.1
- O1A Decoder - Auro-3D 13.1
- O1A Decoder - Auro-3D 9.1
- O1A Decoder - Cube
- O1A Decoder - Headphones
- O1A Decoder - Hexagon
- O1A Decoder - IMAX 12.0
- O1A Decoder - IMAX 5.0
- O1A Decoder - IMAX 6.0
- O1A Decoder - Mono
- O1A Decoder - Octagon
- O1A Decoder - Quad
- O1A Decoder - Quad Binaural
- O1A Decoder - Stereo
- O1A Decoder - UHJ Stereo
- O1A Injector - FuMa