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http://dx.doi.org/10.7776/ASK.2006.25.3.101

Studying the Acoustic Impedance as a Function of Hole Area of Grille for Micro-Speaker  

Oh Sei-Jin (주성대학 음향공학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.25, no.3, 2006 , pp. 101-106 More about this Journal
Abstract
In this study, the impedance behavior of micro-speaker had been investigated as a function of hole area existing on the grille. In order to theoretically study the change of acoustical property due to the different total hole area, the holes were treated as a short open pipe system, such as an orifice. This theoretical result was in an excellent agreement with the experimental one. In detail, the acoustic impedance to be caused by the hole could be greatly increased with the decrease of hole area. Therefore, it can be concluded that the acoustic property of micro-speaker could be greatly changed by increasing the acoustic impedance of hole with reducing hole area.
Keywords
Micro-Speaker; Grille; Acoustic Impedance; Resonance Freguency; Orifice;
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