Focusing of Virtual Sound Sources in Higher Order Ambisonics

Ahrens J, Spors S. Focusing of Virtual Sound Sources in Higher Order Ambisonics. In: AES Convention 124. Audio Engineering Society; 2008. Paper 7378. Available from: https://aes.org/publications/elibrary-page/?id=14508

@inproceedings{Ahrens2008_14508,
  author = {Ahrens, Jens and Spors, Sascha},
  title = {{Focusing of Virtual Sound Sources in Higher Order Ambisonics}},
  booktitle = {AES Convention 124},
  note = {Paper 7378},
  year = {2008},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14508}
}

TY  - CPAPER
TI  - Focusing of Virtual Sound Sources in Higher Order Ambisonics
AU  - Ahrens, Jens
AU  - Spors, Sascha
T2  - AES Convention 124
M1  - Paper 7378
PY  - 2008
DA  - 2008/05/06
UR  - https://aes.org/publications/elibrary-page/?id=14508
PB  - Audio Engineering Society
LA  - en
AB  - Higher order Ambisonics (HOA) is an approach to the physical (re-)synthesis of a given wave field. It is based on the orthogonal expansion of the involved wave fields formulated for interior problems. This implies that HOA is per se only capable of recreating the wave field generated by events outside the listening area. When a virtual source is intended to be reproduced inside the listening area, strong artifacts arise in certain listening positions. These artifacts can be significantly reduced when a wave field with a focus point is reproduced instead of a virtual source. However, the reproduced wave field only coincides with that of the virtual source in one half-space defined by the location and nominal orientation of the focus point. The wave field in the other half-space converges towards the focus point.
ER  -