function?[h_0h_1]?=?daubcqf（NTYPE）
%????[h_0h_1]?=?daubcqf（NTYPE）;?
%
%????Function?computes?the?Daubechies‘?scaling?and?wavelet?filters
%????（normalized?to?sqrt（2））.
%
%????Input:?
%???????N????:?Length?of?filter?（must?be?even）
%???????TYPE?:?Optional?parameter?that?distinguishes?the?minimum?phase
%??????????????maximum?phase?and?mid-phase?solutions?（‘min‘?‘max‘?or
%??????????????‘mid‘）.?If?no?argument?is?specified?the?minimum?phase
%??????????????solution?is?used.
%
%????Output:?
%???????h_0?:?Minimal?phase?Daubechies‘?scaling?filter?
%???????h_1?:?Minimal?phase?Daubechies‘?wavelet?filter?
%
%????Example:
%???????N?=?4;
%???????TYPE?=?‘min‘;
%???????[h_0h_1]?=?daubcqf（NTYPE）
%???????h_0?=?0.4830?0.8365?0.2241?-0.1294
%???????h_1?=?0.1294?0.2241?-0.8365?0.4830
%
%????Reference:?“Orthonormal?bases?of?Compactly?Supported?Wavelets“
%????????????????CPAM?Oct.89?
%

%File?Name:?daubcqf.m
%Last?Modification?Date:?1/2/96	15:12:57
%Current?Version:?daubcqf.m	1.15
%File?Creation?Date:?10/10/88
%Author:?Ramesh?Gopinath??
%
%Copyright:?All?software?documentation?and?related?files?in?this?distribution
%???????????are?Copyright?（c）?1988??Rice?University
%
%Permission?is?granted?for?use?and?non-profit?distribution?providing?that?this
%notice?be?clearly?maintained.?The?right?to?distribute?any?portion?for?profit
%or?as?part?of?any?commercial?product?is?specifically?reserved?for?the?author.
%

if（nargin???TYPE?=?‘min‘;
end;
if（rem（N2）?~=?0）
??error（‘No?Daubechies?filter?exists?for?ODD?length‘）;
end;
K?=?N/2;
a?=?1;
p?=?1;
q?=?1;
h_0?=?[1?1];
for?j??=?1:K-1
??a?=?-a?*?0.25?*?（j?+?K?-?1）/j;
??h_0?=?[0?h_0]?+?[h_0?0];
??p?=?[0?-p]?+?[p?0];
??p?=?[0?-p]?+?[p?0];
??q?=?[0?q?0]?+?a*p;
end;
q?=?sort（roots（q））;
qt?=?q（1:K-1）;
if?TYPE==‘mid‘
??if?rem（K2）==1??
????qt?=?q（[1:4:N-2?2:4:N-2]）;
??else
????qt?=?q（[1?4:4:K-1?5:4:K-1?N-3:-4:K?N-4:-4:K]）;
??end;
end;
h_0?=?conv（h_0real（poly（qt）））;
h_0?=?sqrt（2）*h_0/sum（h_0）;?	%Normalize?to?sqrt（2）;
if（TYPE==‘max‘）
??h_0?=?fliplr（h_0）;
end;
if（abs（sum（h_0?.^?2））-1?>?1e-4）?
??error（‘Numerically?unstable?for?this?value?of?“N“.‘）;
end;
h_1?=?rot90（h_02）;
h_1（1:2:N）=-h_1（1:2:N）;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????2178??1999-03-09?11:15??whmt1_0\daubcqf.m

?????文件???????5306??1999-03-09?11:15??whmt1_0\emhht.m

?????文件???????5296??1999-03-09?11:15??whmt1_0\emhlt.m

?????文件???????5336??1999-03-09?11:15??whmt1_0\emlht.m

?????文件????????437??1999-03-09?21:21??whmt1_0\example1.m

?????文件????????467??1999-03-09?11:15??whmt1_0\example2.m

?????文件????????492??1999-03-09?11:15??whmt1_0\example3.m

?????文件?????????81??1999-03-09?11:15??whmt1_0\gauss.m

?????文件???????3619??2018-07-30?08:59??whmt1_0\hdenoise.m

?????文件???????1071??2001-08-18?00:20??whmt1_0\hmt1d.tar\denoise_tree.m

?????文件????????552??2001-08-18?00:20??whmt1_0\hmt1d.tar\dwtlevel1.m

?????文件????????501??2001-08-18?00:21??whmt1_0\hmt1d.tar\dwtmult1.m

?????文件????????440??2001-08-18?00:19??whmt1_0\hmt1d.tar\hmtdenoise_tree.m

?????文件????????501??2001-08-18?00:20??whmt1_0\hmt1d.tar\idwtlevel1.m

?????文件????????373??2001-08-18?00:20??whmt1_0\hmt1d.tar\idwtmult1.m

?????文件???????2184??2001-08-18?00:19??whmt1_0\hmt1d.tar\indmixmod.m

?????文件???????1667??2001-08-18?00:20??whmt1_0\hmt1d.tar\make_tree_data.m

?????文件???????2263??2001-08-18?00:20??whmt1_0\hmt1d.tar\README

?????文件???????3373??2001-08-18?00:19??whmt1_0\hmt1d.tar\trainEM_tree.m

?????文件???????3830??2001-08-18?00:19??whmt1_0\hmt1d.tar\updown_tree.m

?????文件???????3169??2001-08-18?00:19??whmt1_0\hmt1d.tar\viterbi_tree.m

?????文件???????1062??1999-03-09?11:15??whmt1_0\hmtdeno.m

?????文件???????1102??1999-03-09?11:15??whmt1_0\hmtdeno0.m

?????文件???????1632??1999-03-09?11:15??whmt1_0\hmtmodel.m

?????文件????4325760??1999-03-09?11:15??whmt1_0\hmtmodel.mat

?????文件???????2258??1999-03-09?11:15??whmt1_0\hmttrain.m

?????文件????????802??1999-03-09?11:15??whmt1_0\Idwt.m

?????文件???????2737??1999-03-09?11:15??whmt1_0\Idwt2.m

?????文件????????936??1999-03-09?11:15??whmt1_0\Iidwt.m

?????文件???????2275??1999-03-09?11:15??whmt1_0\Iidwt2.m

............此處省略16個文件信息