課程介紹
頻率為時間訊號的重要特徵,傳統使用頻譜分析來了解一段時間內頻譜的分布,(傅利葉分析)但有時,我們更有興趣的是頻率隨時間變化的情形,如聲音語調的變化,不同潮夕頻率,如一日潮半日潮變化的情形;又如機器運轉特異震動的頻率出現的時間其持續的長短;了解頻率隨時間變化的情形,分析各種不同頻率隨時間變化的情形稱為時頻分析。時頻分析相較於頻譜分析多了頻率對時間的解析。利用時頻分析可以看出頻率隨著時間變化的情形。如對語音分析，可知道某瞬間聲音的頻率分佈。
逸奇科技為了幫助這些訊號分析的研究者，特別研發一套視覺化訊號分析軟體工具 - Visual Signal，透過這套工具，分析者只要簡單的拖曳圖示來指定輸入的訊號資料檔案，以及指定分析方法來處理訊號，就能不撰寫程式輕鬆的檢視分析圖形結果。
應用領域
1.地球科學-地震、潮夕、海水溫度、地下水
2.生物醫學訊號
3.聲音辨識分析
4.振動分析
5.非破壞式監測與檢測
6.隧道.橋樑等結構檢測
7.微震動分析
當日教材下載聯結如下:
課程一. 時頻分析基本理論介紹 逸奇科技 王逸民總經理
>> 投影片下載
課程一. Visual Singal 介紹與應用範例探討 逸奇科技 蔡馨文
>> 投影片下載
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