Application of Porous Material for the Small Loudspeaker Cabinet
碩士 === 國立臺北科技大學 === 車輛工程系所 === 103 === Modern products pursuing light, thin, short and small but internal components must maintain its high-performance. Therefore, micro-speakers must pursuing the high-quality, low-distortion and low cost in the limited space and cost. Theoretically, the small louds...
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| Format: | Others |
| Online Access: | http://ndltd.ncl.edu.tw/handle/8dmb58 |
| Summary: | 碩士 === 國立臺北科技大學 === 車輛工程系所 === 103 === Modern products pursuing light, thin, short and small but internal components must maintain its high-performance. Therefore, micro-speakers must pursuing the high-quality, low-distortion and low cost in the limited space and cost. Theoretically, the small loudspeaker cabinet causes a higher resonance frequency which conducts a poor bass performance.
In this paper, sound-absorbing materials and porous powder materials are applied in the small loudspeaker cabinet to lower the resonance frequency and achieve low frequency enhancement. Through the experimental results, the porous powder material is better than sound-absorbing material. When the cabinet volume is filled with 40 % natural zeolite powder with the size of 0.3 mm ~ 0.6 mm in diameter which packed by the melt-blown nonwoven material has the best bass performance.
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