Continuous control of the angular spread in Ambisonics

Carpentier T. Continuous control of the angular spread in Ambisonics. In: Convention Paper. Audio Engineering Society; 2024. Paper 10689. Available from: https://aes.org/publications/elibrary-page/?id=22502

@inproceedings{Carpentier2024_22502,
  author = {Carpentier, Thibaut},
  title = {{Continuous control of the angular spread in Ambisonics}},
  note = {Paper 10689},
  year = {2024},
  month = jun,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=22502}
}

TY  - CPAPER
TI  - Continuous control of the angular spread in Ambisonics
AU  - Carpentier, Thibaut
M1  - Paper 10689
PY  - 2024
DA  - 2024/06/06
UR  - https://aes.org/publications/elibrary-page/?id=22502
PB  - Audio Engineering Society
LA  - en
AB  - When mixing or post-producing audio scenes, it is often desirable to modify the spatial characteristics of the sound field. In this article we present a method for controlling the angular spread of a sound source or a sound scene encoded in Ambisonics. To do this, we develop a mathematical approach allowing the norm of the energy vector to be continuously varied, by simulating fractional Ambisonics orders. We derive this approach for the 3D and 2D cases, then present the objective results in particular in the form of equivalent directivity patterns. The technique proposed here corrects and completes two previous publications on related topics [1, 2].
ER  -