Jump to Content
Your Recent History
View Cart
Beamforming methods for reproduction of three‐dimensional sound fields over spherical loudspeaker arrays.
J. Acoust. Soc. Am. Volume 128, Issue 4, pp. 2355-2355 (2010); (1 page)
Alerts
Alert Me When Cited
Alert Me When Corrected
Tools
Download Citation
Add to MyScitation
Permissions / Reprints
Blog This Article
Print-Friendly
Research Toolkit
Share
Email Abstract
Connotea
CiteULike
del.icio.us
BibSonomy
Tweet this Article
Add to FacebookMethods for capturing arbitrary 3‐D sound fields using spherical microphone arrays have advanced to the point where commercially available arrays with performance up to fourth order are available. However, the reproduction of these captured fields for human listeners is still held back by issues such as the presence of scatterers (humans, furniture, etc.) within a loudspeaker array which distort the reproduced field, the fact that the field is only captured accurately up to an aliasing frequency of around 1–3 kHz, and technical issues dealing with sampling the sphere and constructing the array properly. This work looks at the reproduction of the acoustic field as a set of beamforming optimization problems and proposes various constraints to address these issues. The proposed subband design leverages the advantages of mode‐matching at low frequencies with other optimization methods at mid and high frequencies that take into account the presence of scatterers and perceptual cues. Comparisons with VBAP, conventional Ambisonics, and dual‐band decoding based on Gerzon’s localization theory are also presented.
© 2010 Acoustical Society of America
PACS
-
Acoustic array systems and processing, beam-forming
ARTICLE DATA
Digital Object Identifier
This Publication
Scitation
SPIN
Google Scholar
PubMed