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Article

Radiation Lobe Decomposition for Directivity Patterns

* Presenting author
Day / Time: 16.08.2021, 13:20-13:40
Room: Schubert 6
Typ: Regulärer Vortrag
Article ID:
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Abstract: We propose a decomposition of sound source directivity patterns into a set of radiation lobes. The radiation lobes are described parametrically by their orientation, peak magnitude and two-dimensional curvature and provide valuable information for the analysis of directivities of musical instruments. Moreover, each radiation lobe can be re-synthesized as minimum-norm spherical harmonic directivity. The decomposition into radiation lobes permits a simplification of the directivity pattern for reproduction by neglecting low-magnitude lobes and by reducing the spherical harmonics order. Hereby, the decomposition approach facilitates practical trade-offs in storage and rendering of directivity patterns.