Impulse and radiation field measurements for single exciter versus exciter array flat-panel loudspeakers

David A. Anderson, Michael C. Heilemann, Mark F. Bocko

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

Flat-panel loudspeakers with single exciters exhibit significant directivity shifts and many discrete resonances in frequency regions of low modal density. These phenomena are demonstrated through mechanical and acoustic measurements on an acrylic and a glass prototype panel, both with single exciters. The measurements are repeated for the acrylic panel using an array of exciters where the force magnitude of each exciter is specified to actuate only the lowest-index bending mode. The mechanical measurements demonstrate that no modes in the array-addressable frequency region above the first mode are actuated. Acoustically, measurements show omnidirectional radiation with a single low-frequency resonance, showing how the exciter array enables the flat panel to behave similarly to a conventional loudspeaker within the array-addressable frequency region.

Original languageEnglish (US)
Title of host publication143rd Audio Engineering Society Convention 2017, AES 2017
PublisherAudio Engineering Society
Pages972-976
Number of pages5
ISBN (Electronic)9781510870703
StatePublished - 2017
Externally publishedYes
Event143rd Audio Engineering Society Convention 2017, AES 2017 - New York, United States
Duration: Oct 18 2017Oct 20 2017

Publication series

Name143rd Audio Engineering Society Convention 2017, AES 2017
Volume2

Conference

Conference143rd Audio Engineering Society Convention 2017, AES 2017
Country/TerritoryUnited States
CityNew York
Period10/18/1710/20/17

Bibliographical note

Publisher Copyright:
© 143rd Audio Engineering Society Convention 2017, AES 2017. All rights reserved.

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