Work

Wave-domain acoustic energy difference maximization method for multi-zone sound field reproduction

Year: 2026

Type: article

Abstract: Multi-zone sound field reproduction aims to create personal sound zones within distinct spatial regions of a shared environment using a loudspeaker array. This paper proposes a wave-domain acoustic energy difference maximization (WDAEDM) method for reproducing multi-zone sound field. The proposed method first represents sound fields and transfer functions with spatial harmonic expansion, then constructs an acoustic energy difference maximization (AEDM) model in the wave domain using sound field coefficients and their relationship with loudspeaker weights, and finally solves this model through eigenvalue decomposition. Simulation results of free-field and automotive cabin acoustic environments have demonstrated that the proposed WDAEDM method presents a more uniform energy distribution within zones compared with the existing spatial-domain methods, and also eliminates the parameter selection issues encountered in existing wave-domain methods.

Source: Journal of low frequency noise, vibration and active control

DOI: 10.1177/14613484251413848

Authors: Yang Yang, Shijia Yin, Shilin Tong, Yongxin Yang, Zhigang Chu

Institutions: Chongqing Industry Polytechnic University, Chongqing University

Language: English

Topic: Speech and Audio Processing

Subfield: Signal Processing

Field: Computer Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,500

Funder: National Natural Science Foundation of China