| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Calculation of Loudspeaker Cabinet Diffraction and Correction |
| LE Yi, SHEN Yong**, XIA Jie
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Laboratory of Modern Acoustics and Institute of Acoustics, Nanjing University, Nanjing 210093
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| Cite this article: |
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LE Yi, SHEN Yong, XIA Jie 2011 Chin. Phys. Lett. 28 104303 |
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Abstract A method of calculating the cabinet edge diffractions for loudspeaker driver when mounted in an enclosure is proposed, based on the extended Biot–Tolstoy–Medwin model. Up to the third order, cabinet diffractions are discussed in detail and the diffractive effects on the radiated sound field of the loudspeaker system are quantitatively described, with a correction function built to compensate for the diffractive interference. The method is applied to a practical loudspeaker enclosure that has rectangular facets. The diffractive effects of the cabinet on the forward sound radiation are investigated and predictions of the calculations show quite good agreements with experimental measurements.
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| Keywords:
43.38.+n
43.20.+g
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Received: 25 March 2011
Published: 28 September 2011
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| PACS: |
43.38.+n
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(Transduction; acoustical devices for the generation and reproduction of sound)
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43.20.+g
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(General linear acoustics)
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[1] Olson H F 1957 Acoustical Engineering (Princeton: Van Nostrand) chap 1 pp 20–24
[2] Bews R M and Hawksford M J 1986 J. Audio Eng. Soc. 34 771
[3] Keller J B 1962 J. Opt. Soc. Am. 52 116
[4] Wright J R 1997 J. Audio Eng. Soc. 45 347
[5] Vanderkooy J 1991 J. Audio Eng. Soc. 39 923
[6] Svensson U P and Fred R I 1999 J. Acoust. Soc. Am. 106 2331
[7] Medwin H 1981 J. Acoust. Soc. Am. 69 1060
[8] Medwin H, Childs E and Jebsen G M 1982 J. Acoust. Soc. Am. 72 1005
[9] International Electrotechnical Commission 2003 IEC 60268-5 Sound System Equipment Part 5: Loudspeaker (Geneva: IEC) pp 41–44
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