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http://dx.doi.org/10.5762/KAIS.2014.15.12.6993

Experimental study of the sound quality performance and improvement of magnetic fluid speaker  

Lee, Moo-Yeon (School of Mechanical Engineering, Dong-A University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.15, no.12, 2014 , pp. 6993-6997 More about this Journal
Abstract
The aim of this study was to experimentally investigate the sound quality characteristics, such as sound deflection, sound pressure level and frequency characteristics of a magnetic type speaker in an anechoic chamber to overcome the sound quality and voice-coil temperature problems. To accomplish this, the sound quality performance of the magnetic type speaker was tested according to the magnetic fluid amount and magnetic field intensity. The sound deflection, sound pressure level, and frequency characteristics were measured using the Smarrt program. As a result, at a magnetic fluid amount of 2.4 ml, the sound deflection and the sound pressure level of the magnetic type speaker were enhanced by comparing with those of the general type speaker. The frequency characteristics and the sound pressure level of the magnetic type speaker were enhanced greatly with increasing magnetic field intensity from 8.06 mT to 9.10 mT. In addition, the sound deflection of the magnetic type speaker was 0.01% lower than that of the general type speaker.
Keywords
Distortion; Sound pressure; Sound quality; Speaker; Voice-coil;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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1 Jae-Hyeong Seo, Moo-Yeon Lee and Lee-Soo Seo, 2013, "Study of Natural Convection of Magnetic Fluid in Cubic Cavity", Trans. Korean Soc. Mech. Eng. B, Vol. 37, No. 7, PP. 637-646.   과학기술학회마을   DOI
2 Moo-Yeon Lee, Hyung-Jin Kim and Woo-Young Lee, 2013, "Numerical analysis on temperature characteristics of the voice-coil for woofer speaker using ferrofluid", J. of Kor. Mag. Soc., Vol. 23, No. 5, PP. 166-172. DOI: http://dx.doi.org/10.4283/JKMS.2013.23.5.166   과학기술학회마을   DOI
3 Sei Jin Oh, Fundamentals of Loudspeaker Engineering, SeokHakDang, 2006, PP. 187-196.
4 Hyung-Jin Kim, Dea-Wan Kim and Mpp-Yeon Lee, 2013, "Experimental study on the heat transfer characteristics of woofer speaker unit", J. of KAIS, Vol. 15, No. 5, PP. 2623-2627. DOI: http://dx.doi.org/10.5762/KAIS.2014.15.5.2623
5 Soo-Hyun Kim, Dong-Yeon Lee and Moo-Yeon Lee, 2010, "Analysis and suppression plan for structure and flow induced noise in a small refrigeration system", J. of KAIS, Vol. 11, No. 11, PP. 4129-4136. DOI: http://dx.doi.org/10.5762/KAIS.2010.11.11.4129   과학기술학회마을   DOI
6 David C. Parker, 2004, "Speaker enclosure design on frequency response", Central Virginia Governor's School. PP. 1-15.
7 Jong-Oh Sun and Kwang-Joon Kim, 2012, "Isolation of vibrations due to speakers in audio-visual electronic devices without deteriorating vibration of speaker cone", J. of Mechanical Science and Technology, Vol. 26, No. 3, PP. 723-730. DOI: http://dx.doi.org/10.1007/s12206-011-1227-9   과학기술학회마을   DOI   ScienceOn