Abstract
Since smart phones and headsets are quite popular nowadays, much research has been conducted to improve the sound quality of these devices. However, the previous research has been focused mainly on the speaker, not on the speaker module even though good sound quality of a speaker does not guarantee good sound quality of the speaker module. Thus, in this study an L-shaped module was proposed with four design parameters, and finite element simulations and tests were conducted to determine optimal values of the four design parameters for good sound quality of the speaker module. In addition, a regression function for the first resonance frequency and the first anti-resonance frequency was obtained as a function of the design parameters.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
C. M. Lee, J. H. Kwon, K. S. Kim, J. H. Park and S. M. Hwang, Design and analysis of microspeakers to improve sound characteristics in a low frequency range, IEEE Transactions on Magnetics, 46 (6) (2010) 2048–2051.
S.-M. Hwang, H.-J. Lee, J.-H. Kim, J.-H. Kwon, K.-S. Hong and G.-Y. Hwang, Development of Hi-Fi microspeakers with a woofer and a tweeter used for mobile phones, Journal of Applied Physics, 97 (2005) 10R512.
D. K. Hong, B. C. Woo, D. Y. Kim and C. W. An, A study on the shape design of micro speaker diaphragm, Trans. Korean Soc. Noise Vibration Eng., 15 (7) (2005) 775–780.
W. C. Kim, G. W. Jang and Y. Y. Kim, Microspeaker diaphragm optimization for widening the operating frequency band and increasing sound pressure level, IEEE Transactions on Magnetics, 46 (1) (2010) 59–66.
M. B. Søndergaard and C. B. W. Pedersen, Applied topology optimization of vibro acoustic hearing, Journal of Sound and Vibration, 333 (3) (2014) 683–692.
T. K. Lee, B. S. Kim and T. J. Cho, A study on the acoustical properties of micro-speaker according to comb teeth shape of the diaphragm, KSMTE Journal, 17 (6) (2008) 124–131.
D. C. Kim and H. Y. Jeong, An optimal design of the internal space in a micro speaker module, International Journal of Precision Engineering and Manufacturing, 16 (6) (2015) 1–7.
S. P. Glen, Taguchi methods a hand on approach, Addison Wesley New York, USA (1992) 114–125.
Simulia, ABAQUS 6.12 user’s analysis manual, 6.10.1 Acoustic, shock, and coupled acoustic-structural analysis.
S. M. Hwang, B. S. Kang, H. J. Lee, G. Y. Hwang and K. S. Hong, New development of combined permanent magnet, IEEE Transactions on Magnetics, 41 (5) (2005) 2000–2003.
J. A. Ghani, I. A. Choudhury and H. H. Hassan, Application of Taguchi method in the optimization of end milling parameters, Journal of Materials Processing Technology, 145 (1) (2004) 84–92.
H. Oktem, T. Erzurumlu and I. Uzman, Application of Taguchi optimization technique in determining plastic injection molding process parameters for a thin-shell part, Materials and Design, 28 (4) (2007) 1271–1278.
G. Zolfaghari, A. Esmaili-Sari, M. Anbia, H. Younesi, S. Amirmahmoodi and A. Ghafari-Nazari, Taguchi optimization approach for Pb(II) and Hg(II) removal from aqueous solutions using modified mesoporous carbon, Journal of Hazardous Materials, 192 (3) (2011) 1046–1055.
W. H. Yang and Y. S. Tarng, Design optimization of cutting parameters for turning operations based on the Taguchi method, Journal of Materials Processing Technology, 84 (1–3) (1998) 122–129.
F. A. Everest and K. Pohlmann, Master handbook of acoustics, Fifth Ed., McGraw Hill Publishing Company (2009).
Author information
Authors and Affiliations
Corresponding author
Additional information
Recommended by Associate Editor Junhong Park
Choong-Ryung Lee received his Ph.D. at Sogang University, Seoul, S. Korea in 2017. He is currently a Research Engineer at Hyundai Mobis. His major areas are automotive safety, rubber modeling and finite element analysis.
Hyeong-Joo Moon received his M.S. at Sogang University, Seoul, S. Korea in 2016. He is currently a Research Engineer at Pidotech. His major areas are structural analysis, optimal design and metamodeling.
Hyun-Yong Jeong is a Professor at Department of Mechanical Engineering, Sogang University, Seoul, S. Korea. His major areas are automotive safety, material modeling, and finite element analysis.
Rights and permissions
About this article
Cite this article
Lee, CR., Moon, HJ. & Jeong, HY. An optimal design of a micro speaker module using finite element simulations and tests. J Mech Sci Technol 31, 4569–4578 (2017). https://doi.org/10.1007/s12206-017-0903-9
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12206-017-0903-9