標題: Sound radiation of panel-form loudspeaker using flat voice coil for excitation
作者: Jiang, C. H.
Kam, T. Y.
Chang, Y. H.
機械工程學系
Department of Mechanical Engineering
關鍵字: Loudspeaker;Acoustics;Plate;Optimal design;Sound radiation
公開日期: 15-Jan-2017
摘要: 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. (C) 2016 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.apacoust.2016.10.009
http://hdl.handle.net/11536/132734
ISSN: 0003-682X
DOI: 10.1016/j.apacoust.2016.10.009
期刊: APPLIED ACOUSTICS
Volume: 116
起始頁: 375
結束頁: 389
Appears in Collections:Articles