| Summary: | 碩士 === 國立交通大學 === 機械工程學系 === 101 === In this thesis, the effects of several system parameters on the sound pressure level (SPL) curves of panel-speakers made of different materials are studied via both theoretical and experimental approaches. For the panel-speakers, it is not uncommon to have SPL drops termed as sound valleys on the SPL curves, which can affect the sound quality of the speakers. This research offers a way to eliminate the sound valleys by adjusting the system parameters using the finite element model established on the basis of the simulation software “ANSYS”. In the first place, the experimental results are used to prove the correctness of the ANSYS model which can be used for the following investigation. Then we make changes in the system parameters such as plate material, diameter of coil, lamination arrangement of plate, and properties of elastic support to study the effects of the parameters on the SPL curves of the speakers. Finally, the appropriate system parameters are used to fabricate a panel-speaker to demonstrate the practicability of the design.
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