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Analytical Method of 2.5D Exterior Sound Field Synthesis by Using Multipole Loudspeaker Array

Abstract: 

We propose an analytical method of 2.5-dimensional exterior sound field reproduction by using a multipole loudspeaker array. The method reproduces the sound field modeled by expansion coefficients of spherical harmonics based on multipole superposition. We also present an analytical method for converting the expansion coefficients of spherical harmonics to weighting coefficients for multipole superposition. In contrast to pressure-matching methods, which tend to be ill-conditioned problems, the proposed method gives stable solutions based on an analytical conversion from the expansion coefficients of spherical harmonics. We derive the analytical method by converting the sound field modeled by expansion coefficients of spherical harmonics to a linear combination of ‘basic multipoles’ for obtaining the weighting coefficients of each multipole. Computer simulation results indicate that the proposed method reproduces the sound field more accurately than existing pressure-matching based method.

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Paper Details

Authors:
Kenta Imaizumi, Kimitaka Tsuitsuimi, Atsushi Nakadaira, Yoichi Haneda
Submitted On:
18 October 2019 - 1:47am
Short Link:
Type:
Poster
Event:
Presenter's Name:
Kenta Imaizumi
Document Year:
2019
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Document Files

WASPAA2019_Poster_Imaizumi.pdf

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[1] Kenta Imaizumi, Kimitaka Tsuitsuimi, Atsushi Nakadaira, Yoichi Haneda, "Analytical Method of 2.5D Exterior Sound Field Synthesis by Using Multipole Loudspeaker Array", IEEE SigPort, 2019. [Online]. Available: http://sigport.org/4880. Accessed: Nov. 18, 2019.
@article{4880-19,
url = {http://sigport.org/4880},
author = {Kenta Imaizumi; Kimitaka Tsuitsuimi; Atsushi Nakadaira; Yoichi Haneda },
publisher = {IEEE SigPort},
title = {Analytical Method of 2.5D Exterior Sound Field Synthesis by Using Multipole Loudspeaker Array},
year = {2019} }
TY - EJOUR
T1 - Analytical Method of 2.5D Exterior Sound Field Synthesis by Using Multipole Loudspeaker Array
AU - Kenta Imaizumi; Kimitaka Tsuitsuimi; Atsushi Nakadaira; Yoichi Haneda
PY - 2019
PB - IEEE SigPort
UR - http://sigport.org/4880
ER -
Kenta Imaizumi, Kimitaka Tsuitsuimi, Atsushi Nakadaira, Yoichi Haneda. (2019). Analytical Method of 2.5D Exterior Sound Field Synthesis by Using Multipole Loudspeaker Array. IEEE SigPort. http://sigport.org/4880
Kenta Imaizumi, Kimitaka Tsuitsuimi, Atsushi Nakadaira, Yoichi Haneda, 2019. Analytical Method of 2.5D Exterior Sound Field Synthesis by Using Multipole Loudspeaker Array. Available at: http://sigport.org/4880.
Kenta Imaizumi, Kimitaka Tsuitsuimi, Atsushi Nakadaira, Yoichi Haneda. (2019). "Analytical Method of 2.5D Exterior Sound Field Synthesis by Using Multipole Loudspeaker Array." Web.
1. Kenta Imaizumi, Kimitaka Tsuitsuimi, Atsushi Nakadaira, Yoichi Haneda. Analytical Method of 2.5D Exterior Sound Field Synthesis by Using Multipole Loudspeaker Array [Internet]. IEEE SigPort; 2019. Available from : http://sigport.org/4880