A simple model of cabinet edge diffraction
A simple model of cabinet edge diffraction
Estimation of the sound field radiated by a conventional loudspeaker driver mounted in an infinite baffle is reasonably straightforward if the motion of the diaphragm is known. However, as soon as the driver is mounted in a cabinet having a finite baffle, estimation of the radiated field becomes problematic. Everything else being equal, the problem practically reduces to one of diffraction from the edges of the baffle in which the driver is mounted. Traditional models of edge diffraction are based on the Geometric Theory of Diffraction which is a high-frequency asymptotic solution that can only, strictly, be applied to edges of infinite length. This paper describes a simple model of edge diffraction which is based on a low-frequency assumption and proves to be more applicable than many models to the loudspeaker cabinet diffraction problem.
loudspeaker, diffraction, cabinet, enclosure
155-161
Holland, Keith
90dd842b-e3c8-45bb-865e-3e7da77ec703
2010
Holland, Keith
90dd842b-e3c8-45bb-865e-3e7da77ec703
Holland, Keith
(2010)
A simple model of cabinet edge diffraction.
In Reproduced Sound 2010: Performing Arts Venue: Balancing the Design.
vol. 32,
Institute of Acoustics.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Estimation of the sound field radiated by a conventional loudspeaker driver mounted in an infinite baffle is reasonably straightforward if the motion of the diaphragm is known. However, as soon as the driver is mounted in a cabinet having a finite baffle, estimation of the radiated field becomes problematic. Everything else being equal, the problem practically reduces to one of diffraction from the edges of the baffle in which the driver is mounted. Traditional models of edge diffraction are based on the Geometric Theory of Diffraction which is a high-frequency asymptotic solution that can only, strictly, be applied to edges of infinite length. This paper describes a simple model of edge diffraction which is based on a low-frequency assumption and proves to be more applicable than many models to the loudspeaker cabinet diffraction problem.
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Published date: 2010
Venue - Dates:
Reproduced Sound 2010: Performing Arts Venue: Balancing the Design, Millenium Centre, Cardiff, United Kingdom, 2010-11-17 - 2010-11-19
Keywords:
loudspeaker, diffraction, cabinet, enclosure
Identifiers
Local EPrints ID: 426091
URI: http://eprints.soton.ac.uk/id/eprint/426091
PURE UUID: 41cf5796-a79d-4f2f-8354-00dfc8ce5ba7
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Date deposited: 14 Nov 2018 17:30
Last modified: 15 Mar 2024 22:45
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Author:
Keith Holland
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