Sound radiation of panel-form loudspeaker using flat voice coil for excitation

C. H. Jiang, Tai-Yan Kam*, Y. H. Chang

*Corresponding author for this work

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

A novel panel-form loudspeaker in which the panel of the speaker is excited by the forces generated through the flat voice coil of a rectangular electro-magnetic type exciter for sound radiation is presented. The exciter when properly designed has the advantage of exerting appropriate loads to the panel so that the major sound pressure level (SPL) dips of the speaker can be suppressed or even eliminated. For designing such panel-form speaker, a method formulated on the basis of the classical plate theory (CPT), Ritz method, and first Rayleigh integral is proposed for predicting the SPL curve of the speaker. An experimental investigation was performed to verify the feasibility of the proposed method. The effects of some system parameters on the major SPL dips of the proposed panel-form speakers are investigated by means of several numerical examples. The optimal locations of flat voice coils for exciting several panel-form speakers are determined to illustrate the important role of excitation location for enhancing sound quality of such speakers via the removal or suppression of the major SPL dips.

Original languageEnglish
Pages (from-to)375-389
Number of pages15
JournalApplied Acoustics
Volume116
DOIs
StatePublished - 15 Jan 2017

Keywords

  • Acoustics
  • Loudspeaker
  • Optimal design
  • Plate
  • Sound radiation

Fingerprint Dive into the research topics of 'Sound radiation of panel-form loudspeaker using flat voice coil for excitation'. Together they form a unique fingerprint.

  • Cite this