TY - GEN
T1 - Spatial alignment of acoustic sources based on spherical harmonics radiation analysis
AU - Rafaely, Boaz
PY - 2010/6/28
Y1 - 2010/6/28
N2 - The radiation pattern of sound sources such as loudspeakers, musical instruments, the human voice and machines is of importance in a wide range of applications. Recently, radiation analysis has been studied by measuring the sound field around the source using spherical microphone arrays, and computing the spherical harmonics spectrum of the radiated sound field. However, the latter may change with the positioning of the source inside the measurement array, leading to a potential difficulty in determining the acoustic radiation pattern consistently. This paper presents the theoretical analysis of the spherical harmonics spectrum of spatially translated sources, and proposes several measures for the deviation of sources from their acoustic center. These measures can then be used for spatial alignment of sources, overcoming inconsistency due to misalignment.
AB - The radiation pattern of sound sources such as loudspeakers, musical instruments, the human voice and machines is of importance in a wide range of applications. Recently, radiation analysis has been studied by measuring the sound field around the source using spherical microphone arrays, and computing the spherical harmonics spectrum of the radiated sound field. However, the latter may change with the positioning of the source inside the measurement array, leading to a potential difficulty in determining the acoustic radiation pattern consistently. This paper presents the theoretical analysis of the spherical harmonics spectrum of spatially translated sources, and proposes several measures for the deviation of sources from their acoustic center. These measures can then be used for spatial alignment of sources, overcoming inconsistency due to misalignment.
KW - Acoustic center
KW - Sound sources
KW - Spherical harmonics
UR - http://www.scopus.com/inward/record.url?scp=77953826578&partnerID=8YFLogxK
U2 - 10.1109/ISCCSP.2010.5463367
DO - 10.1109/ISCCSP.2010.5463367
M3 - Conference contribution
AN - SCOPUS:77953826578
SN - 9781424462858
T3 - Final Program and Abstract Book - 4th International Symposium on Communications, Control, and Signal Processing, ISCCSP 2010
BT - Final Program and Abstract Book - 4th International Symposium on Communications, Control, and Signal Processing, ISCCSP 2010
T2 - 4th International Symposium on Communications, Control, and Signal Processing, ISCCSP-2010
Y2 - 3 March 2010 through 5 March 2010
ER -