| Summary: | 碩士 === 逢甲大學 === 電聲碩士學位學程 === 97 === We simulate and analyze of the portable speaker sound pressure level in the Anechoic Chamber, that use finite element analysis software COMSOL Multiphysics ,so as to obtain the best geometry size parameter to promote the performance of portable speaker .The work property of the speaker is the coupling with electromagnetic , mechanical structure of the diaphragm and the acoustic field.
Use the finite element software COMSOL Multiphysic to simulate analysis ,and compare with the experimental result in the Anechoic Chamber，so that we can verify the accuracy.
The simulate analysis of the project by changing the material of the diaphragm ,the shape of the diaphragm ，and the result of discussion, we can know what about that change to the influence of the sound pressure level, the result of the analysis can offer the data of reference to the research and develop of the portable speaker in the future.
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