本實驗研究的目的在於探討模擬血管阻塞與脈搏波速間之關係，其中使用兩個微型麥克風分別安置於模擬血管的上游與下游以建立一個便利的測量脈搏波速的技術。本研究利用橡膠管和填充阻塞物的橡膠管來模擬血管阻塞情形，由麥克風感測器以測量橡膠管波動，分析訊號後可得到脈波波速及頻譜分析的變化。實驗結果顯示，有阻塞物的模擬血管脈波波速減小，經頻譜分析比較，模擬血管阻塞後的主頻位置沒有顯著更動但整體共振頻率振幅會增加。實驗結果也顯示可利用時間頻率分析圖來討論血管阻塞與否時的差異特質，以供未來分析人體血管阻塞時的應用。

The investigation on the modeling of the blood vessel corrugation effects on the pulsed wave velocity has been done in the Fluid Mechanics Laboratory of National Cheng Kung University. By using two microphones to build up a convenient tool for measuring the pulse wave velocity in the modeling blood vessel. The modeling of blood vessel blocking was done by using the rubber tubes and obstruction inside it. The acoustic signal obtained by the microphones were used to calculate the variation of the pulse wave velocity as well as for the spectral analysis. The results show that the pulsed wave velocity of the blocking model blood vessel is slower. In these cases , the primary frequency positions do not change much, but the oscillation amplitude of them have been increased as show in the spectral diagrams. The experimental results also indicate that the temporal to frequency analysis results is a proper tool to analyse the pulse wave date. Which is suitable for rhe analysis on human body by using a pair of acoustic transducers.

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