Annibale, Paolo; Rabenstein, Rudolf (Univ. Erlangen-Nürnberg, 91058 Erlangen, Germany)
Antonacci, Fabio; Canclini, Antonio; Sarti, Augusto (Politecnico di Milano, 20133 Milano, Italy)
The two main approaches for the description of sound fields are methods derived from solutions of the wave equation and geometric methods based on analogies to ray optics. Their mathematical representations are reviewed and it is shown that representations by projective geometry and descriptions by Fourier acoustics lead to similar parametric representations of sound fields.