Planar Microphone Array Processing for the Analysis and Reproduction of Spatial Audio Using Directional Audio Coding

Ahonen J, Del Galdo G, Kallinger M, Küch F, Pulkki V, Schultz-Amling R. Planar Microphone Array Processing for the Analysis and Reproduction of Spatial Audio Using Directional Audio Coding. In: AES Convention 124. Audio Engineering Society; 2008. Paper 7375. Available from: https://aes.org/publications/elibrary-page/?id=14505

@inproceedings{Ahonen2008_14505,
  author = {Ahonen, Jukka and Del Galdo, Giovanni and Kallinger, Markus and Küch, Fabian and Pulkki, Ville and Schultz-Amling, Richard},
  title = {{Planar Microphone Array Processing for the Analysis and Reproduction of Spatial Audio Using Directional Audio Coding}},
  booktitle = {AES Convention 124},
  note = {Paper 7375},
  year = {2008},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14505}
}

TY  - CPAPER
TI  - Planar Microphone Array Processing for the Analysis and Reproduction of Spatial Audio Using Directional Audio Coding
AU  - Ahonen, Jukka
AU  - Del Galdo, Giovanni
AU  - Kallinger, Markus
AU  - Küch, Fabian
AU  - Pulkki, Ville
AU  - Schultz-Amling, Richard
T2  - AES Convention 124
M1  - Paper 7375
PY  - 2008
DA  - 2008/05/06
UR  - https://aes.org/publications/elibrary-page/?id=14505
PB  - Audio Engineering Society
LA  - en
AB  - Recording and reproduction of spatial audio becomes more and more important, as multichannel audio applications gain increasing attention. Directional Audio Coding (DirAC) represents a well proven approach for the analysis and reproduction of spatial sound. In the analysis part, the direction-of-arrival and the diffuseness of the sound field is estimated in subbands using B-format signals, which can be created with 3D omnidirectional microphone arrays. However, 3D microphone configurations are not practical in consumer applications, e.g., due to physical design constraints. In this paper, we propose a new approach which allows for an approximation of the required B-format signals, but is based on a planar microphone configuration only. Comparisons with the standard DirAC approach confirm that the proposed method is able to correctly estimate the desired parameters within a wide range of frequency and the spatial resolution matches the human perception.
ER  -