3D multizone soundfield reproduction in the reverberant room using a spherical loudspeaker array

Multizone soundfield reproduction in the reverberant room is a complex problem in acoustic signal processing. In this paper, we introduce a method of recreating a 3D multizone soundfield for reverberant environments. Based on spherical addition theorem for Bessel function, we derive the desired global soundfield by translating local desired soundfields to a single global coordinate system. We cast the global soundfield reproduction into a least squares framework and introduce the modal space approach to derive the loudspeaker weights. A practical method is used to determining the Acoustic Transfer Function (ATF) between each loudspeaker and every point of reproduction region. The simulation results indicate that the proposed method can reproduce the target 3D multizone soundfield accurately.