Bessel Panel

Application ID: 1372

The Bessel panel is a way to arrange a number of loudspeakers so that the angular sound distribution resembles that of a single speaker.

This model combines five Bessel panels in the same pattern to approximate a purely radial sound field. The speakers are driven with different signals, some of them in counter-phase. This results in an approximately homogeneous polar far-field distribution.

The model uses a BEM-FEM approach to solve the radiation from the idealized speaker panel.

Note that, in versions of the model older than 5.3a the problem is solved purely with the FEM method. The GMRES solver with the Geometric Multigrid preconditioner is used to ensure low memory consumption at a high mesh resolution.

This model example illustrates applications of this type that would nominally be built using the following products: