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科技與工程學院
電機工程學系
學位論文
學位論文
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http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/73890
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search.filters.author.Chih-Chao Wei
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search.filters.author.魏志兆
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search.filters.subject.Cardiac cycle
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search.filters.subject.Short-time fourier transform
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search.filters.subject.Support vector machines
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search.filters.subject.心臟週期
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search.filters.subject.支持向量機
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利用短時傅立葉轉換及支持向量機對心音訊號做自動分析
(
2009
)
魏志兆
;
Chih-Chao Wei
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心臟疾病已成為國人第二大死因,大多數心臟疾病是由心瓣膜的不正常所造成。人的耳朵可經由電子聽診器聽取心音探查心臟疾病的類型,但解釋心音是一個非常特殊的技巧,必須要接受嚴格的訓練才能做正確的心音聽診。由於這個原因,自動心音分析的電腦系統將對醫務人員會有很大的幫助。本文提出了一種完整的心音分析系統涵蓋從分割心臟週期到最後確定心臟疾病的類型。心臟週期的分割與識別是根據短時傅立葉變換(STFT)和支持向量機(SVM)。實驗過程中,心音資料來源是來至德州心臟學會公開的心音資料,並非常有希望達到不錯的辨識率。
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