Sound field reproduction using the Lasso and OMP method with fixed directivity loudspeakers.

* Presenting author
Day / Time: 21.03.2019, 11:00-11:20
Room: Saal 8
Typ: Regulärer Vortrag
Abstract: A spherical array of loudspeakers is usually installed in sound field reproduction system. For these systems, the loudspeaker signal design is traditionally relied on least-squares(LS) and high-order Ambisonics (HOA) methods. In some cases of sound incidence to the sweet spot, the desired sound field comes only from one or a small number of sources. Taking this sparsity into consideration, as a result, the desired sound field can be reproduced when only a small number of loudspeakers in the spherical array are activated. In this paper, the performance of the least-absolute shrinkage and selection operator (Lasso) and orthogonal matching pursuit (OMP) are compared with the LS method. Simulation results were investigated to evaluate the performance differences between the Lasso and OMP method with the LS method. Furthermore the effect of using fixed directivity loudspeakers were evaluated in terms of simulation.