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:Acoustics Module
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Specification Chart and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.