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http://dx.doi.org/10.5050/KSNVE.2014.24.7.525

Acoustic and Electrical Analysis of Microspeaker for Mobile Phones  

Park, Seok-Tae (Chungbuk Health & Science University)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.24, no.7, 2014 , pp. 525-536 More about this Journal
Abstract
In this paper, GUI program for microspeaker system simulation program was developed and verified through closed box, vent box and 6th order bandpass enclosure system. By using the pseudo loudspeaker model concept, TS parameters and rear volume of microspeaker were identified. Their suitabilities were proved by comparing test results with simulations of electrical impedance and sound pressure response curves for the three box types; closed box, vent box and 6th order bandpass box. Also, MSSP was found to be effective regardless of the microspeaker's shape, either circular or rectangular shape. MSSP can be used for the microspeaker system simulation, and can give a general prediction of such as; sound pressure level curve, electrical impedance, diaphragm velocity and displacement curve according to multiple design parameters; diaphragm mass, compliance, force factor, front and rear volume, front and rear port's diameter and length.
Keywords
Circular Microspeaker; Closed Box; Rectangular Microspeaker; Lowpass Filter; Mass Correction Filter; Mobile Phone's Microspeaker; Microspeaker System Simulation Program(MSSP); Pseudo Loudspeaker Model Concept; Thiele Small Parameters; Vent Box; 6th Order Bandpass Box;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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1 LMS User Manual, 2000, Win32 Release 4.1, LinearX Systems Inc.
2 2002, LEAP Enclosure Shop Reference Manual, Release 5, LinearX Systems Inc.
3 Park, S. T., 2007, Thiele Small Parameters Estimation for Pseudo Loudspeaker within 10mm Grade Circular-type Microspeaker, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 17, No. 11, pp. 1112-1118.   DOI
4 Bai, M. R., 2005, Acoustic Analysis and Design of Miniature Loudspeakers for Mobile Phones, J. Audio Eng. Soc., Vol. 53, No. 11, pp. 1061-1076.
5 Bai, M. R., 2007, Optimal Design of Loudspeaker Systems Based on Sequential Quadratic Programming (SQP), J. Audio Eng. Soc., Vol. 55, No. 1/2, pp. 44-54.
6 Park, S. T., 2007, Parameters Estimation for Pseudo Loudspeaker attached to Closed-box and Enhanced Closed-box Modeling, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 17, No. 10, pp. 983-992.   과학기술학회마을   DOI   ScienceOn
7 Park, S. T., 2007, Derivation of Parameters for Loudspeaker with Frequency Dependent Terms and Discussion for Estimation Methods, Journal of the Acoustical Society of Korea, Vol. 26, No. 6, pp. 276-285.   과학기술학회마을
8 Leach Jr, W. M., 2003, Introduction to Electroacoustics & Audio Amplifier Design, 3rd edition, Kendall/Hunt Publishing Company.
9 Park, S. T., 2007, Enhanced PSPICE Circuit Model for Vented-box Loudspeaker System, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 17, No. 8, pp. 757-765.   과학기술학회마을   DOI   ScienceOn