Advanced SearchSearch Tips
Vibration and Acoustic Analysis of Balanced Armature Micro Speaker
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Vibration and Acoustic Analysis of Balanced Armature Micro Speaker
Ko, Dong Shin; Hur, Duk Jae; Kwon, Sang Yup; Lee, Sung Su;
  PDF(new window)
This paper describes the development process for vibration and acoustic characteristics of a balanced armature speaker. The design parameters were chosen in consideration of the influence of the bending stiffness of balanced armature which is the form of a cantilever structure in the speaker. For study of the performance of the speaker according to the design parameters, in the first step, we analyzed the characteristics of the velocity of the diaphragm to the electrical input. Next step, acoustic characteristics were analyzed by structural-acoustic coupled analysis. And the reliability of the analysis was verified by comparing the result of analysis with test results. Finally, we proposed a design method for implementing an enhanced balanced armature speakers through analysis method.
Balanced Armature Speaker;Acoustic Characteristics;FEM;BEM;Speaker Diaphragm;Vibration Analysis;Acoustic Analysis;
 Cited by
Kim, J. H., Kim, J. T., Kim, J. O. and Min, J. K., 1997, Acoustic Characteristics of a Loudspeaker Obtained by Vibration and Acoustic Analyses, KSME Journal, Vol. 21, No. 10, pp. 1742~1756.

Kim, K. M., Kim, S. K. and Park, K., 2013, Investigation on Vibration Characteristics of Micro Speaker Diaphragms for Various Shape Designs, J. Korean Soc. Precis. Eng., Vol. 30, No. 8, pp. 790~796. crossref(new window)

Hwang, S. M., Lee, H. J., Kwon, J. H., Hwang, G. Y. and Yang, Y. C., 2006, Development of Combined Permanent Magnet Type Micro-speakers Used for Mobile Phones, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 16, No. 2, pp. 183~189. crossref(new window)

Frank, F., 1985, Sound and Structural Vibration, Academic Press, p. 23.

Ugural, A. C., 1981, Stresses in Plates and Shells, McGraw-Hill, p. 8.

Ryu, M. R., Kim, Y. H. and Park, H. S., 2008, Thermal Stress Prediction of Motorcycle Disk Brake Using Full Factorial Design, Proceedings of the The Korean Society of Manufacturing Process Engineering Annual Autumn Conference, pp. 318-324.

Kim, S. K., Lee, T. H. and Lee, S. S., 2004, Multidisciplinary Design Optimization for Acoustic Characteristics of a Speaker Diaphragm, Proceedings of the KSNVE Annual Autumn Conference, pp. 763-766.

Kagawa, Y., Yamabuchi, T. and Sugihara, K., 1980, A Finite Element Approach to a Coupled Structural-acoustic Radiation System with Application to Loudspeaker Characteristic Calculation, Journal of Sound and Vibration, Vol. 69, No. 2, pp. 229~243. crossref(new window)

Kim, J. S., Kim, D. S., Kyong, Y. S. and Wang, S. M., 2007, A Structure-bone Noise Prediction based on the Boundary Element Method with a Laser Doppler Vibrometer, Proceedings of the KSNVE Annual Autumn Conference, pp. 1360-1364.