Study on the measurement of membrane-structure’s Study on the measurement of membrane-structure’s equivalent MCK by impedance tube method
Date Issued
2012
Date
2012
Author(s)
Huang, Bin-Han
Abstract
The purpose of this study is to use the impedance tube method to measurement the reflection coefficient of membrane-structure. Then, using the reflection coefficient to calculate the equivalent MCK of membrane-structure. If we put the membrane close to a hard board(assume rigid), The membrane''s characteristics is difficult to show. So we add a cavity on back of the membrane to make membrane''s characteristics show. In order to verify the feasibility of this method. Use the equivalent MCK to calculate the reflection coefficient and impedance, then compare with the experimental data. At last, We compare the equivalent mass and real mass to observe whether there is a correlation. This thesis measure two membranes. We find the trend is the same, between reflection coefficient and impedance calculating by equivalent MCK and experimental data.
Subjects
Equivalent MCK
Membrane
reflection coefficient
impedance
cavity
Type
thesis
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