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f5b34黃寶儀 例題4 用VB語言設計數字濾波器(問題)
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f5b34黃寶儀
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Sep 24, 2007, 1:37:58 AM
9/24/07
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例題4 用VB語言設計數字濾波器
問題
1.甚麼是數字濾波器?
2.數字濾波器有甚麼用途?
3.甚麼是傅里葉變換(FFT)算法?
4.甚麼是窗口函數?
5.矩形窗﹑漢寧窗﹑海明窗﹑布拉克曼窗﹑凱澤窗有甚麼分別?有何異同?
安娜
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Sep 29, 2007, 1:32:12 AM
9/29/07
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> 問題
> 1.甚麼是數字濾波器?
> 2.數字濾波器有甚麼用途?
數位濾波器(digital filter)是由數位乘法器、加法器和延時單元組成的一種裝置。其功能是對輸入離散信號的數位代碼進行運算處理,以達到
改變信號頻譜的目的。
> 3.甚麼是傅里葉變換(FFT)算法?
傅里葉變換是一種特殊的積分變換。它能將滿足一定條件的某個函數表示成正弦基函數的線性組合或者積分。
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