希爾伯特黃轉換簡介(Hilbert Huang Transform)
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Hilbert-Huang(HHT)轉換方法是黃鍔根據近代知名數學家Hilbert的數學理論設計,做爲分析非穩定或非線性的訊號TheHilbert–Huangtransform(HHT)isawaytodecomposeasignalintoso-calledintrinsicmodefunctions(IMF)alongwithatrend,andobtaininstantaneousfrequencydata.Itisdesignedtoworkwellfordatathatisnonstationaryandnonlinear.IncontrasttoothercommontransformsliketheFouriertransform,theHHTismorelikeanalgorithm(anempiricalapproach)thatcanbeappliedtoadataset,ratherthanatheoreticaltool.