本論文目標主要是發展高階分佈聲源法，並比較近似聲源法及線性分佈聲源法及高階分佈聲源法之優缺點。再配合聲音全像（Acoustical Holography）量測技術對訊號進行分析，以期繪出噪音源之位置及聲壓分佈圖。文中將利用有限元素法（Finite Element Method）中內差函數（Shape Function），進行三角形元素之節點設定，以及利用三角形高斯積分法(Gauss Legendre Quadrature over a triangle)來處理面積分的計算。
文中分別做兩大類之模擬，第一分別以不同陣列大小來做各種聲源特性之分析及高斯點數多寡之比較，其中也利用不同預估距離來做比較。第二以相同量測點數並針對近似聲源法與線性分佈聲源法及高階分佈聲源法在不同的聲源特性下以及不同預估距離之分析比較。在這兩種模擬中，使用線性分佈法會比近似聲源法及高階分佈法好，故在此方法的比較裡較推薦使用線性分佈聲源法。

The purpose is to develop a high-order distribution source method,and to compare among similar source method and linear distribution source method and high-order distribution source method. By using the developed method as well as the technology of the measurement of acoustical holography, the position of the noise source is identified and distribution map of sound pressure is achieved. In the article, the Shape Function in the Finite Element Method is used. And a surface is evatuated by integral using the Gauss Legendre Quadrature over a triangle.
The simulations contains two parts in the thesis: First,alternative array microphone sizes are considered in the analysis as well as the alternative numbers of Gauss points are used in order to compare the accuracy among the simulations. Secondly,the same number of measurement points with alternative soure methods are considered. And the results of these methods are compared. In these two kinds of simulations,it is conclnded that with the same number of the measurement points,using linear distribution source method gives the best estimation among these three alternative methods. Therefore,the linear distribution source method is recommended in the estimation field and in acoustic holography.

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