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HHT 2009/01/19 showmin.

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Presentation on theme: "HHT 2009/01/19 showmin."— Presentation transcript:

1 HHT 2009/01/19 showmin

2 Introduction Hilbert Huang Transform
在訊號處理與頻譜分析的目的是要描述信號的頻譜含量在時間上變化,以便能在時間和頻譜上同時表示信號的能量或者強度。 傅立業頻譜並沒有告訴我們哪些頻率在什麼時候出現。此一方法無法表現出也無法表現資料的時變性。 Introduction to HHT, 謝志敏, 2007

3 Comparison Introduction to HHT, 謝志敏, 2007

4 EMD Empirical Mode Decomposition Introduction to HHT, 謝志敏, 2007

5 EMD Process Introduction to HHT, 謝志敏, 2007

6 EMD Process Introduction to HHT, 謝志敏, 2007

7 Give it a try 5-point protrude value Parabolic curve spline in matlab

8 Noise (original + c1-c5)

9 Tone (original + c1-c5)

10 Overall

11 Demo Original Res1 Res2 Res3 Res4 C1 C2 C3 C4 C5


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