Ambisonic Decoders

Surround sound decoding for multiple loudspeaker layouts

Ambisonic config files

Please find below Ambisonic decoders up to 5th Order for different loudspeaker configurations. The loudspeaker order goes from top to bottom and counter-clockwise. The config files can be used with compatible VST plugins that use the AMBIX format. The decode matrices are presented in ACN/SN3D format. You can download individual config files or cut to the chase and download all in a single zip file here. If you do not see your loudspeaker configuration listed here, then you should look at the excellent Ambisonic Toolbox which can be found here.


First Order

2-D

# Output ChannelsConfigurationLoudspeaker azimuths (degrees)Loudspeaker elevations (degrees)Decoder typeDecoder download
4Quad[45 135 225 315][0 0 0 0]Mode Matchh1_v0_Quad_MM_pinv
MaxReh1_v0_Quad_MaxRe_pinv
5ITU 5.1[330 30 0 0 250 110][0 0 0 0 0 0]MaxRe (Wiggins)h1_v0_WIG_ITU51

First Order

3-D

# Output ChannelsConfigurationLoudspeaker azimuths (degrees)Loudspeaker elevations (degrees)Decoder typeDecoder download
6Octahedron[0 45 135 225 315 0][90 0 0 0 0 -90]Mode matchh1_v1_Octahedron_MM_pinv
MaxReh1_v1_Octahedron_MaxRe_pinv
8Cube[45 135 225 315 45 135 225 315][35 35 35 35 -35 -35 -35 -35]Mode Matchh1_v1_Cube_MM_pinv
MaxReh1_v1_Cube_MaxRe_pinv
8Birectangle[90 270 45 135 225 315 90 270][45 45 0 0 0 0 -45 -45]Mode Matchh1_v1_BiRectangle_MM_pinv
MaxReh1_v1_BiRectangle_MaxRe_pinv

Second Order

2-D

# Output ChannelsConfigurationLoudspeaker azimuths (degrees)Loudspeaker elevations (degrees)Decoder typeDecoder download
6Hex[0 60 120 180 240 300][0 0 0 0 0 0]Mode Matchh2_v0_Hexagon_MM_pinv
MaxReh2_v0_Hexagon_MaxRe_pinv

Second Order

3-D

# Output ChannelsConfigurationLoudspeaker azimuths (degrees)Loudspeaker elevations (degrees)Decoder typeDecoder download
12Dodecahedron[180 50 310 118 242 0 180 62 298 130 230 0][63 46 46 16 16 0 0 -16 -16 -46 -46 -63]Mode Matchh2_v2_Dodecahedron_Faces_MM_pinv
MaxReh2_v2_Dodecahedron_Faces_MaxRe_pinv

Third Order

2-D

# Output ChannelsConfigurationLoudspeaker azimuths (degrees)Loudspeaker elevations (degrees)Decoder typeDecoder download
8Octagon[0 45 90 135 180 225 270 315][0 0 0 0 0 0 0 0]Mode Matchh3_v0_Octagon_MM_pinv

Third Order

3-D

# Output ChannelsConfigurationLoudspeaker azimuths (degrees)Loudspeaker elevations (degrees)Decoder typeDecoder download
1616-channel sphere packing[0 90 180 270 45 135 225 315 0 90 180 270 45 135 225 315][51 51 51 51 14 14 14 14 -14 -14 -14 -14 -51 -51 -51 -51]MaxReh3_v3_16ch_Sphere_Pck_MaxRe_pinv
2626-point Lebedev grid[0 0 90 180 270 45 135 225 315 0 45 90 135 180 225 270 315 45 135 225 315 0 90 180 270 0][90 45 45 45 45 35 35 35 35 0 0 0 0 0 0 0 0 -35 -35 -35 -35 -45 -45 -45 -45 -90]Mode Matchh3_v3_Lebedev_Grid_26_Speakers_MM_pinv
MaxReh3_v3_Lebedev_Grid_26_Speakers_MaxRe_pinv

Fourth Order

2-D

# Output ChannelsConfigurationLoudspeaker azimuths (degrees)Loudspeaker elevations (degrees)Decoder typeDecoder download
99 ch circular[0 40 80 120 160 200 240 280 320][0 0 0 0 0 0 0 0 0 0]Mode Matchh4_v0_9_ch_circular_MM_pinv
MaxReh4_v0_9_ch_circular_MaxRe_pinv

Fourth Order

3-D

# Output ChannelsConfigurationLoudspeaker azimuths (degrees)Loudspeaker elevations (degrees)Decoder typeDecoder download
32Pentakis Dodecahedron[90 270 0 180 45 135 225 315 90 270 0 180 32 69 111 148 212 249 291 328 0 180 90 270 45 135 225 315 0 180 90 270][69 69 58 58 35 35 35 35 32 32 21 21 0 0 0 0 0 0 0 0 -21 -21 -32 -32 -35 -35 -35 -35 -58 -58 -69 -69]Mode Matchh4_v4_Pentakis_Dodecahedron_MM_pinv
MaxReh4_v4_Pentakis_Dodecahedron_MaxRe_pinv

Fifth Order

2-D

# Output ChannelsConfigurationLoudspeaker azimuths (degrees)Loudspeaker elevations (degrees)Decoder typeDecoder download
1212 ch circular[0 30 60 90 120 150 180 210 240 270 300 330][0 0 0 0 0 0 0 0 0 0 0 0]Mode Matchh5_v0_12_ch_circular_MM_pinv
MaxReh5_v0_12_ch_circular_MaxRe_pinv

Fifth Order

3-D

# Output ChannelsConfigurationLoudspeaker azimuths (degrees)Loudspeaker elevations (degrees)Decoder typeDecoder download
42Pentakis Icosidodecahedron[ 0 0 180 58 122 238 302 90 270 21 159 201 339 58 122 238 302 0 32 90 148 180 212 270 328 58 122 238 302 21 159 201 339 90 270 58 122 238 302 0 180 0][90 58 58 54 54 54 54 32 32 30 30 30 30 18 18 18 18 0 0 0 0 0 0 0 0 -18 -18 -18 -18 -30 -30 -30 -30 -32 -32 -54 -54 -54 -54 -58 -58 -90 ]Mode Matchh5_v5_Pentakis_Icosidodecahedron_MM_pinv
MaxReh5_v5_Pentakis_Icosidodecahedron_MaxRe_pinv
5050 pt Lebedev Grid[0 45 135 225 315 0 90 180 270 45 135 225 315 18 72 108 162 198 252 288 342 0 45 90 135 180 225 270 315 18 72 108 162 198 252 288 342 45 135 225 315 0 90 180 270 45 135 225 315 0][90 65 65 65 65 45 45 45 45 35 35 35 35 18 18 18 18 18 18 18 18 0 0 0 0 0 0 0 0 -18 -18 -18 -18 -18 -18 -18 -18 -35 -35 -35 -35 -45 -45 -45 -45 -65 -65 -65 -65 -90]Mode Matchh5_v5_50 point Lebedev Grid_MM_pinv
MaxReh5_v5_50 point Lebedev Grid_MaxRe_pinv