A comparison between two modal domain methods for personal audio reproduction

• DOI: 10.1121/10.0000474
• Publication Date: 2020-01-21T15:17:48Z
• Authors: Qiaoxi Zhu; Xiaojun Qiu; Philip Coleman; Ian Burnett
• Keywords: 0103 physical sciences; 01 natural sciences

Personal audio provides private and personalized listening experiences by generating sound zones in a shared space with minimal interference between zones. One challenge of the design is to achieve best performance limited number microphones loudspeakers. In this paper, two modal domain methods for personal reproduction are compared. spatial harmonic decomposition (SHD) based method other singular value (SVD) method. It demonstrated that SVD more efficient than SHD 2.5 dimensional design. Simulation results show outperforms one up 10 dB terms acoustic contrast 17 error compact arc array five loudspeakers, while requiring fewer around zone boundaries. The retains inherent efficiency optimizing avoiding geometric limitations using basis functions. Thus, approach advantageous applications flexible system geometries small loudspeakers microphones.