dyaddown.m
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上传日期:2013-01-09
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- % DYADDOWN 丂2恑僟僂儞僒儞僾儕儞僌
- % Y = DYADDOWN(X,EVENODD)丄X 偼儀僋僩儖偱丄X 傪1偮旘傃偵僟僂儞僒儞僾儖偟偨傕偺傪
- % 弌椡偟傑偡丅Y 偼丄惓偺惍悢 EVENODD 偺抣偵傛偭偰丄X 偺嬼悢僀儞僨僢僋僗偐婏悢僀
- % 儞僨僢僋僗偵側傝傑偡丅
- %
- % EVENODD 偑嬼悢偺応崌丄Y(k) = X(2k)
- % EVENODD 偑婏悢偺応崌丄Y(k) = X(2k-1)
- %
- % Y = DYADDOWN(X) 偼丄Y = DYADDOWN(X,0) 偲摍壙偱偡丅
- %
- % Y = DYADDOWN(X,EVENODD,'type')丄傑偨偼丄Y = DYADDOWN(X,'type',EVENODD)(X 偑峴
- % 楍偺応崌)偼丄曄悢 'type' 偑丄'c' 傑偨偼 'r' 傑偨偼 'm' 偱偁傞偐偵傛偭偰丄峴(傑
- % 偨偼楍丄峴偲楍偺憃曽)傪忋弎偺僷儔儊乕僞 EVENODD 偺巜掕偵偦偭偨宍偱嶍彍偟丄偦傟
- % 偵傛偭偰摼傜傟傞 X 偺僶乕僕儑儞傪弌椡偟傑偡丅
- %
- % Y = DYADDOWN(X) 偼丄Y = DYADDOWN(X,0,'c') 偲摍壙偱偡丅
- % Y = DYADDOWN(X,'type') 偼丄Y = DYADDOWN(X,0,'type') 偲摍壙偱偡丅
- % Y = DYADDOWN(X,EVENODD) 偼丄Y = DYADDOWN(X,EVENODD,'c') 偲摍壙偱偡丅
- %
- % |1 2 3 4| |2 4|
- % 椺戣 : X = |2 4 6 8| , DYADDOWN(X,'c') = |4 8|
- % |3 6 9 0| |6 0|
- %
- % |1 2 3 4| |1 3|
- % DYADDOWN(X,'r',1) = |3 6 9 0| , DYADDOWN(X,'m',1) = |3 9|
- %
- % 嶲峫丗 DYADUP.
- % Copyright 1995-2002 The MathWorks, Inc.