| Summary: | 碩士 === 國立臺北科技大學 === 車輛工程系所 === 105 === As technology progresses, not only powerful function is demanded in electronic devices, public also has aspiration for having a thinner, and smaller exterior. As speaker’s volume influence its’ performance directly, the public’s requirement may cause limitations in designing it. Beside, development course is also compressed to fulfill customers’ expectations. To develop optimized sound performance and make best efficacy in the low frequency field, and to reduce the entire cost, running simulation is no doubt a tendency. Types of notebook speakers were collected and analyzed. After measuring those speakers’ length, width, and height, a standard speaker box was defined not to be larger than all of them. Finite element analysis software “COMSOL Multiphysics” was used to find the best design, and confirm the result with a true sample. Through the simulation process, the influences of different sizes of bass reflex tubes in low frequency area’s performance and their frequency response level were discovered. And, the best volume scale of bass-reflex tube was found. Results of the study were expected to let designers find the best volume scale in the initial stage, and most importantly, to develop a performance-optimized speaker system with minimum costs and time.
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