Audio projection : directional sound and its applications in immersive communication.

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Audio projection : directional sound and its applications in immersive communication.

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dc.contributor.author Gan, Woon-Seng.
dc.contributor.author Tan, Ee-Leng.
dc.contributor.author Kuo, Sen M.
dc.date.accessioned 2011-09-29T02:57:33Z
dc.date.available 2011-09-29T02:57:33Z
dc.date.copyright 2011
dc.date.issued 2011-09-29
dc.identifier.citation Gan, W. S., Tan, E. L., & Kuo, S. M. (2011). Audio Projection: Directional sound and its applications in immersive communication. IEEE Signal Processing Magazine, 28(1), 43-57.
dc.identifier.issn 1053-5888
dc.identifier.uri http://hdl.handle.net/10220/7114
dc.description.abstract The parametric loudspeaker provides an effective means of projecting sound in a highly directional manner without using large loudspeaker arrays to form sharp directional beams. It can be augmented with conventional loudspeakers to create a more immersive audio soundscape. Deployment of parametric loudspeakers in many public places where private messaging can make a difference in attracting attention, conveying messages without needing headphones, and creating private listening zones to reduce noise pollution. Digital signal processing plays a significant role in enhancing the aural quality of the parametric loudspeakers, and array processing can help to shape and steer the beam electronically. In addition, other signal processing techniques can also be applied to add more flexibility and improve the performance of parametric loudspeakers. These developments rely heavily on the latest techniques in acoustics and audio signal processing to overcome some of the current limitations in nonlinear acoustics modeling and ultrasonic transducers' technology. A useful feature in sound projection is to realize a highaccuracy digital beamsteering capability in air using an array of parametric loudspeakers. An in-depth study into the theoretical model of wave steering capability in parametric array in air can provide some hints on how we can best steer the demodulated signal in an efficient manner. As seen from this article, digital signal processing provides the main engine to achieve directional sound projection, and new digital processing techniques will be devised to provide a better quality, controllable audio beaming, and efficient sound focusing device in the future.
dc.format.extent 17 p.
dc.language.iso en
dc.relation.ispartofseries IEEE signal processing magazine
dc.rights © 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [DOI: http://dx.doi.org/10.1109/MSP.2010.938755].
dc.subject DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing.
dc.title Audio projection : directional sound and its applications in immersive communication.
dc.type Journal Article
dc.contributor.school School of Electrical and Electronic Engineering
dc.identifier.doi http://dx.doi.org/10.1109/MSP.2010.938755
dc.description.version Accepted version
dc.contributor.organization Singapore National Research Foundation
dc.identifier.rims 156508

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