Rendering of Virtual Sound Sources with Arbitrary Directivity in Higher Order Ambisonics

Ahrens J, Spors S. Rendering of Virtual Sound Sources with Arbitrary Directivity in Higher Order Ambisonics. In: AES Convention 123. Audio Engineering Society; 2007. Paper 7243. Available from: https://aes.org/publications/elibrary-page/?id=14301

@inproceedings{Ahrens2007_14301,
  author = {Ahrens, Jens and Spors, Sascha},
  title = {{Rendering of Virtual Sound Sources with Arbitrary Directivity in Higher Order Ambisonics}},
  booktitle = {AES Convention 123},
  note = {Paper 7243},
  year = {2007},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14301}
}

TY  - CPAPER
TI  - Rendering of Virtual Sound Sources with Arbitrary Directivity in Higher Order Ambisonics
AU  - Ahrens, Jens
AU  - Spors, Sascha
T2  - AES Convention 123
M1  - Paper 7243
PY  - 2007
DA  - 2007/10/06
UR  - https://aes.org/publications/elibrary-page/?id=14301
PB  - Audio Engineering Society
LA  - en
AB  - Higher order Ambisonics (HOA) is a spatial audio reproduction technique aiming at physically synthesizing a desired sound field. It is based on the expansion of sound fields into orthogonal basis functions (spatial harmonics). In this paper we present an approach to the two-dimensional reproduction of virtual sound sources at arbitrary positions having arbitrary radiation directivities. The approach is based on the description of the directional properties of a source by a set of circular harmonics. Consequences of truncation of the circular harmonics expansion and spatial sampling as occurring in typical installations of HOA systems due to the employment of a finite number of loudspeakers are discussed. We illustrate our findings with simulated reproduction results.
ER  -