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Acoustic characteristics of a loudspeaker obtained by vibration and acoustic analysis
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 Title & Authors
Acoustic characteristics of a loudspeaker obtained by vibration and acoustic analysis
Kim, Jung-Ho; Kim, Jun-Tai; Kim, Jin-Oh; Min, Jin-Ki;
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 Abstract
The acoustic characteristics of a direct radiator type loudspeaker has been studied in this paper. The natural modes of the speaker cone vibration analyzed numerically by the finite element method have been verified by comparing them with experimental results. The so-ap-proved finite-element model has been used to calculate the vibration response of the cone excited by the voice coil. The vibration displacement of the speaker cone paper has been converted into the vibration velocity and used as a boundary condition for the acoustic analysis. The frequency characteristics, directivity, and sound pressure distribution of the loudspeaker have been calculated by the boundary element method. The numerical results have been verified by the experiments carried out in an anechoic chamber. The variations of the acoustic characteristics due to the changes of some design parameter values can be examined using the numerical model.
 Keywords
Loudspeaker;Finite Element Method;Boundary Element Method;Vibration;Acoustic Characteristics;Frequency Characteristics;Directivity;Sound Pressure Distribution;
 Language
Korean
 Cited by
1.
직접방사형 스피커의 음향특성 해석및 설계,김준태;김정호;김진오;

소음진동, 1998. vol.8. 2, pp.274-282
2.
재질이 주기적으로 불균일한 보의 굽힘 진동 해석,김진오;문병환;김준태;

한국음향학회지, 1999. vol.18. 3, pp.73-78
3.
재질이 주기적으로 불균일한 보에서 전파하는 굽힘 탄성파,김진오;문병환;

대한기계학회논문집A, 2000. vol.24. 8, pp.1923-1930 crossref(new window)
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