Effect of Natural Fibers Addition on the Acoustic Properties Anasysis of Speaker Cone
碩士 === 國立嘉義大學 === 林產科學系研究所 === 95 === This object of this study was to investigate the effect of natural fibers on the acoustic properties of speaker cone. After different natural fibers blend with pulp the physical properties of papers are lesser than those of original papers. The influence of edge...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2007
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| Online Access: | http://ndltd.ncl.edu.tw/handle/40742368431661445665 |
| Summary: | 碩士 === 國立嘉義大學 === 林產科學系研究所 === 95 === This object of this study was to investigate the effect of natural fibers on the acoustic properties of speaker cone. After different natural fibers blend with pulp the physical properties of papers are lesser than those of original papers. The influence of edge and damper on resonant frequency（f0）are very important, but different fibers with pulp are unobvious difference. Effective frequency band of speaker is from resonant frequency（f0）to 8kHz. The frequency-response curve is flat during the low frequency. Has a mid-frequency dip at 1 kHz to 2 kHz. There is a obvious dip and pike effect at high frequency 3kHz~8kHz. The measurement results show that total harmonic distortions were less than 1%. The results indicate that the added few natural materials are not influence the acoustic properties obvious and to reduce prime cost.
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