Robust 3D Sound Capturing with Planar Microphone Arrays Using Directional Audio Coding

Thiergart O, Milano G, Ascherl T, Habets EAP. Robust 3D Sound Capturing with Planar Microphone Arrays Using Directional Audio Coding. In: AES Convention 143. Audio Engineering Society; 2017. Paper 9866. Available from: https://aes.org/publications/elibrary-page/?id=19263

@inproceedings{Thiergart2017_19263,
  author = {Thiergart, Oliver and Milano, Guendalina and Ascherl, Tobias and Habets, Emanuël A. P.},
  title = {{Robust 3D Sound Capturing with Planar Microphone Arrays Using Directional Audio Coding}},
  booktitle = {AES Convention 143},
  note = {Paper 9866},
  year = {2017},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=19263}
}

TY  - CPAPER
TI  - Robust 3D Sound Capturing with Planar Microphone Arrays Using Directional Audio Coding
AU  - Thiergart, Oliver
AU  - Milano, Guendalina
AU  - Ascherl, Tobias
AU  - Habets, Emanuël A. P.
T2  - AES Convention 143
M1  - Paper 9866
PY  - 2017
DA  - 2017/10/06
UR  - https://aes.org/publications/elibrary-page/?id=19263
PB  - Audio Engineering Society
LA  - en
AB  - Real-world VR applications require to capture 3D sound with microphone setups that are hidden from the field-of-view of the 360-degree camera. Directional audio coding (DirAC) is a spatial sound capturing approach that can be applied to a wide range of compact microphone arrays. Unfortunately, its underlying parametric sound field model is often violated which leads to a degradation of the spatial sound quality. Therefore, we combine the non-linear DirAC processing with a linear beamforming approach that approximates the panning gains in DirAC such that the required amount of non-linear processing is reduced while increasing the robustness against model violations. Additionally, we derive a DOA estimator that enables 3D sound capturing with DirAC using compact 2D microphone arrays, which are often preferred in VR applications.
ER  -