Investigation of loudspeaker cabinet vibration using reciprocity

  • Alavi H
  • Holland K
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Abstract

This paper investigates the contribution of loudspeaker cabinet wall vibration to the sound pressure at a listening position, and draws conclusions about the importance of low-vibration cabinet construction. Although the vibration of the walls can be measured using standard techniques, assessing the contribution of that wall vibration to the radiated sound field requires details of the Green functions linking the vibrating wall to points in the field. With all but the simplest geometries, these Green functions are generally not known. Here, the required Green functions are measured in-situ, by invoking the principle of vibroacoustic reciprocity. These Green functions are combined with measurements of the wall vibration when the loudspeaker is operated, to yield estimates of the contribution of parts of the cabinet to the overall sound pressure at the listening position. The Green functions are measured first in an anechoic chamber, and then in a typical domestic listening room.

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  • SCOPUS: 2-s2.0-84871423811
  • SGR: 84871423811
  • ISBN: 9781615676859
  • PUI: 366313221

Authors

  • H Alavi

  • K R Holland

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