Stepwise-based optimizing approaches for arrangements of loudspeaker in multi-zone sound field reproduction
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In: Acoustical Science and Technology, Vol. 46, No. 1, 01.2025, p. 11-21.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Stepwise-based optimizing approaches for arrangements of loudspeaker in multi-zone sound field reproduction
AU - Zhou, Tong
AU - Yasueda, Kazuya
AU - Bouattour, Ghada
AU - Georgiadis, Anthimos
AU - Kataoka, Akitoshi
N1 - Publisher Copyright: ©2025 The Acoustical Society of Japan.
PY - 2025/1
Y1 - 2025/1
N2 - This study introduces bidirectional stepwise-based algorithms designed to optimize loudspeaker array configurations for Multizone Sound Field Reproduction systems. An initial arrangement selection method based on loudspeaker magnitude enhances the optimization process. These algorithms were validated using the Acoustic Contrast Control and Pressure Matching methods across free-field conditions and a comprehensive Room Impulse Response database including various room conditions. Comparative experiments against traditional unidirectional iterative strategies demonstrate that the proposed algorithms significantly outperform existing methods in terms of efficiency and effectiveness, especially in configurations with fewer loudspeakers. For example, in a small meeting room with 16 loudspeakers, the stepwise-based approaches achieved higher acoustic contrast and required substantially fewer iterations than conventional methods. Specifically, optimization efficiency improvements were about 55.2% and 77.8% in Acoustic Contrast Control and 36.7% and 68.6% in Pressure Matching, compared to conventional iteratively adding or removing approaches.
AB - This study introduces bidirectional stepwise-based algorithms designed to optimize loudspeaker array configurations for Multizone Sound Field Reproduction systems. An initial arrangement selection method based on loudspeaker magnitude enhances the optimization process. These algorithms were validated using the Acoustic Contrast Control and Pressure Matching methods across free-field conditions and a comprehensive Room Impulse Response database including various room conditions. Comparative experiments against traditional unidirectional iterative strategies demonstrate that the proposed algorithms significantly outperform existing methods in terms of efficiency and effectiveness, especially in configurations with fewer loudspeakers. For example, in a small meeting room with 16 loudspeakers, the stepwise-based approaches achieved higher acoustic contrast and required substantially fewer iterations than conventional methods. Specifically, optimization efficiency improvements were about 55.2% and 77.8% in Acoustic Contrast Control and 36.7% and 68.6% in Pressure Matching, compared to conventional iteratively adding or removing approaches.
KW - Acoustic contrast control
KW - Loudspeaker arrangement optimization
KW - Multi-zone sound field reproduction
KW - Pressure matching
KW - Stepwise
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=85214646203&partnerID=8YFLogxK
U2 - 10.1250/ast.e24.56
DO - 10.1250/ast.e24.56
M3 - Journal articles
AN - SCOPUS:85214646203
VL - 46
SP - 11
EP - 21
JO - Acoustical Science and Technology
JF - Acoustical Science and Technology
SN - 1346-3969
IS - 1
ER -