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논문 기본 정보

자료유형
학술대회자료
저자정보
박창일 (성주음향) 박소현 (성주음향) 김재운 (성주음향)
저널정보
한국자동차공학회 한국자동차공학회 추계학술대회 및 전시회 2021년 한국자동차공학회 추계학술대회 및 전시회
발행연도
2021.11
수록면
490 - 493 (4page)

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초록· 키워드

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The diaphragm of the tweeter speaker shows very low rigidity because it is made of a material such as silk or polymer with a thin thickness of microns. For the purpose of preventing physical contact or impact on the single unit from the outside, a thin plastic grille on the front end of the diaphragm should be configured as a unit and a set. At this time, the grille should transmit the sound generated by the tweeter unit without distortion or loss as much as possible, which greatly affects the sound quality. However, the design method, pattern, and size determination of the perforated hole according to the grille design show a lot of difference depending on the speaker manufacturer, and this difference causes the difference in the sound pressure level of the tweeter speaker. Although there are many factors that affect sound quality, in this paper, the change in sound pressure level characteristics according to the size of the perforated hole of the grille was considered through the experimental method and the FEM-based structure-acoustic coupling analysis. After checking the sound pressure level characteristics of the single unit without the grille on the tweeter speaker, the characteristics of the sound pressure level according to the two cases with different grille hole sizes were compared and analyzed. As a result, it was experimentally confirmed that the sound pressure level of the grille unit was lower than the single unit. Second, it was confirmed that the experimental results and the structure-acoustic analysis results based on FEM have similarities in this paper.

목차

Abstract
1. 서론
2. 트위터스피커
3. 샘플실험
4. 시뮬레이션 해석
4. 결론
References

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