A newly developed microphone arrangement is presented that aims at an optimal pickup of ambient sound for 3D Audio. The ORTF-3D is a discrete 8ch setup that can be routed to the channels of a 3D Stereo format such as Dolby Atmos or Auro3D. It is also ideally suited for immersive sound formats such as wavefield synthesis or VR/Binaural, as it creates a complex 3D ambience that can be mixed or binauralized. The ORTF-3D setup was developed on the basis of stereophonic rules. It creates an optimal directional image in all directions as well as a high spatial sound quality due to highly uncorrelated signals in the diffuse sound. Reports from sound engineers affirm that it creates a highly immersive sound in a large listening area and still is compact and practical to use.
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