スピーカシステムの前面パネルの振動パターン : 測定条件と結果

概要

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This paper is concerned with an experimental modal analysis of a loudspeaker system. Based on Frequency Response Functions (FRFs) measured in about 500 points uniformly spaced on the front panel of the loudspeaker system several vibrations modes of the loudspeaker membranes have been found. Then, the vibrations of the loudspeaker membranes were compared with vibrations of the cabinet of the loudspeaker system. It has been shown that the vibrations of the loudspeaker case were very small relative to the vibration of the loudspeaker membranes. Thus, the loudspeaker cabinet, which may be considered as a set of vibrating plates, is rather a source of a very weak sound and may be neglected. It does not influence significantly on the acoustics field radiated by the loudspeaker system.
社団法人日本音響学会の論文