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http://dx.doi.org/10.7776/ASK.2009.28.4.299

Correlation Between Tensile Strength of Diaphragm and Resonance Frequency for Micro-Speaker  

Oh, Sei-Jin (주성대학 음향공학과)
Kim, Hae-Young (동명대학교 정보통신대학 멀티미디어공학과)
Abstract
In this study, the acoustical properties of micro-speaker had been studied as a function of diaphragm patterns. The diaphragm was divided into two sections, such as edge and dome sides. The pattern change at each side affected the tensile strength of diaphragm. As a result, the resonance frequency was varied with the change. With increasing the number of pattern at the edge side, it was increased at the first, but it reversed to the exponential decrease of that. It increased due to the increase of tensile strength to be caused by using "U" type of drill and whirlwind pattern, and decreasing of drill angle at the edge side. However, it was decreased due to the decrease of tensile strength to be by increasing the number of radiation pattern and dome hight, and decreasing the dome radius at the dome side.
Keywords
Resonance frequency; Tensile strength; Micro-speaker; Diaphragm pattern; Stiffness;
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