TY - JOUR
T1 - Spatial sound intensity vectors in spherical harmonic domain
AU - Zuo, Huanyu
AU - Samarasinghe, Prasanga N.
AU - Abhayapala, Thushara D.
AU - Dickins, Glenn
N1 - Publisher Copyright:
© 2019 Acoustical Society of America.
PY - 2019/2/1
Y1 - 2019/2/1
N2 - Sound intensity is a fundamental quantity describing acoustic wave fields and it contains both energy and directivity information. It is used in a variety of applications such as source localization, reproduction, and power measurement. Until now, intensity is defined at a point in space, however given sound propagates over space, knowing its spatial distribution could be more powerful. This paper formulates spatial sound intensity vectors in spherical harmonic domain such that the vectors contain energy and directivity information over continuous spatial regions. These representations are derived with finite sets of closed form coefficients enabling ease of implementation.
AB - Sound intensity is a fundamental quantity describing acoustic wave fields and it contains both energy and directivity information. It is used in a variety of applications such as source localization, reproduction, and power measurement. Until now, intensity is defined at a point in space, however given sound propagates over space, knowing its spatial distribution could be more powerful. This paper formulates spatial sound intensity vectors in spherical harmonic domain such that the vectors contain energy and directivity information over continuous spatial regions. These representations are derived with finite sets of closed form coefficients enabling ease of implementation.
UR - http://www.scopus.com/inward/record.url?scp=85061721439&partnerID=8YFLogxK
U2 - 10.1121/1.5090197
DO - 10.1121/1.5090197
M3 - Article
SN - 0001-4966
VL - 145
SP - EL149-EL155
JO - Journal of the Acoustical Society of America
JF - Journal of the Acoustical Society of America
IS - 2
ER -