Conversion of Discretely Sampled Sound Field Data to Auralization Formats

Støfringsdal B, Svensson P. Conversion of Discretely Sampled Sound Field Data to Auralization Formats. J Audio Eng Soc. 2006;54(5):380-400. Available from: https://aes.org/publications/elibrary-page/?id=13682

@article{Stofringsdal2006_13682,
  author = {Støfringsdal, Bård and Svensson, Peter},
  title = {{Conversion of Discretely Sampled Sound Field Data to Auralization Formats}},
  journal = {Journal of the Audio Engineering Society},
  volume = {54},
  number = {5},
  pages = {380--400},
  year = {2006},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13682}
}

TY  - JOUR
TI  - Conversion of Discretely Sampled Sound Field Data to Auralization Formats
AU  - Støfringsdal, Bård
AU  - Svensson, Peter
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 54
IS  - 5
SP  - 380
EP  - 400
PY  - 2006
DA  - 2006/05/06
UR  - https://aes.org/publications/elibrary-page/?id=13682
PB  - Audio Engineering Society
LA  - en
AB  - Sound field simulations at low frequencies often use finite-element or other mesh-based methods. For auralization, output data from these methods need to be converted to a format compatible with auralization methods, such as binaural reproduction, wave field synthesis (WFS), higher order Ambisonics (HOA), or vector base amplitude panning (VBAP). The mesh data can be viewed as a spatial sampling of the sound pressure distribution. A method is proposed for converting the mesh data to plane-wave components using a circular array of virtual sources centered around a reference position. Such a plane-wave decomposition (PWD) is straightforward to process further for auralization. Emphasis is put on generalized modal decompositions of sound fields through singular-value decomposition, and on the relation between modal bandwidth and the ratio of mesh width to wavelength. The special case of a decomposition into cylindrical harmonics is studied in detail. Results are presented for two-dimensional examples, and numerical issues are discussed.
ER  -