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Spatial Audio Reproduction Using Distributed Mode Loudspeakers

J. Acoust. Soc. Am. Volume 123, Issue 5, pp. 2981-2981 (2008); (1 page)

Joshua Atkins1 and James West2

1Johns Hopkins University, 853 West 35th Street, Baltimore, MD 21211, USA, joshatkins@jhu.edu
2Johns Hopkins University, Department of Electrical Engineering, 3400 North Charles Street, Baltimore, MD 21218, USA, jimwest@jhu.edu

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For future telecommunication systems to become more pervasive in society they must have the ability to produce high quality surround sound audio for multiple listeners. Current 5.1 audio systems lack the capacity to handle large group telecommunications because of their limited optimal listening positions ("sweet spots") and their preference for sound generated in front of the listeners. This is due in part to the non‐optimal position of the loudspeakers and also to the fact that very directional speakers are commonly used. Recently, a new form of speaker has been developed called a distributed mode loudspeaker (DML). These speakers use bending waves in a panel to radiate sound. Consequently, they can be very good omnidirectional sources throughout nearly all of the human hearing range. Experiments using a higher order ambisonics (HOA) approach to sound field capture and generation will be presented to show how conventional electrodynamic speaker arrays compare to equivalent DML arrays for spatial sound reproduction. This work is funded by NSF Grant IIS‐0534221.

© 2008 Acoustical Society of America

PACS

  • 43.55.Jz

    Sound-reinforcement systems for rooms and enclosures

  • 43.38.Tj

    Public address systems, sound-reinforcement systems

  • 43.38.Hz

    Transducer arrays, acoustic interaction effects in arrays

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0001-4966 (print)  


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