%%?該代碼為基于帶動量項的BP神經(jīng)網(wǎng)絡語音識別
%
%?
%?			該案例作者申明：		1：本人長期駐扎在此板塊里，對該案例提問，做到有問必答。本套書籍官方網(wǎng)站為：video.ourmatlab.com		2：點此從當當預定本書：《Matlab神經(jīng)網(wǎng)絡30個案例分析》。	3：此案例有配套的教學視頻，視頻下載方式video.ourmatlab.com/vbuy.html。?
								4：此案例為原創(chuàng)案例，轉(zhuǎn)載請注明出處（《Matlab神經(jīng)網(wǎng)絡30個案例分析》）。							5：若此案例碰巧與您的研究有關(guān)聯(lián)，我們歡迎您提意見，要求等，我們考慮后可以加在案例里。			
%?
%%?清空環(huán)境變量
clc
clear

%%?訓練數(shù)據(jù)預測數(shù)據(jù)提取及歸一化

%下載四類語音信號
load?data1?c1
load?data2?c2
load?data3?c3
load?data4?c4

%四個特征信號矩陣合成一個矩陣
data（1:500:）=c1（1:500:）;
data（501:1000:）=c2（1:500:）;
data（1001:1500:）=c3（1:500:）;
data（1501:2000:）=c4（1:500:）;

%從1到2000間隨機排序
k=rand（12000）;
[mn]=sort（k）;

%輸入輸出數(shù)據(jù)
input=data（:2:25）;
output1?=data（:1）;

%把輸出從1維變成4維
for?i=1:2000
????switch?output1（i）
????????case?1
????????????output（i:）=[1?0?0?0];
????????case?2
????????????output（i:）=[0?1?0?0];
????????case?3
????????????output（i:）=[0?0?1?0];
????????case?4
????????????output（i:）=[0?0?0?1];
????end
end

%隨機提取1500個樣本為訓練樣本，500個樣本為預測樣本
input_train=input（n（1:1500）:）‘;
output_train=output（n（1:1500）:）‘;
input_test=input（n（1501:2000）:）‘;
output_test=output（n（1501:2000）:）‘;

%輸入數(shù)據(jù)歸一化
[inputninputps]=mapminmax（input_train）;

%%?網(wǎng)絡結(jié)構(gòu)初始化
innum=24;
midnum=25;
outnum=4;
?

%權(quán)值初始化
w1=rands（midnuminnum）;
b1=rands（midnum1）;
w2=rands（midnumoutnum）;
b2=rands（outnum1）;

w2_1=w2;w2_2=w2_1;
w1_1=w1;w1_2=w1_1;
b1_1=b1;b1_2=b1_1;
b2_1=b2;b2_2=b2_1;

%學習率
xite=0.1
alfa=0.01;

%%?網(wǎng)絡訓練
for?ii=1:10
????E（ii）=0;
????for?i=1:1:1500
???????%%?網(wǎng)絡預測輸出?
????????x=inputn（:i）;
????????%?隱含層輸出
????????for?j=1:1:midnum
????????????I（j）=inputn（:i）‘*w1（j:）‘+b1（j）;
????????????Iout（j）=1/（1+exp（-I（j）））;
????????end
????????%?輸出層輸出
????????yn=w2‘*Iout‘+b2;
????????
???????%%?權(quán)值閥值修正
????????%計算誤差
????????e=output_train（:i）-yn;?????
????????E（ii）=E（ii）+sum（abs（e））;
????????
????????%計算權(quán)值變化率
????????dw2=e*Iout;
????????db2=e‘;
????????
????????for?j=1:1:midnum
????????????S=1/（1+exp（-I（j）））;
????????????FI（j）=S*（1-S）;
????????end??????
????????for?k=1:1:innum
????????????for?j=1:1:midnum
????????????????dw1（kj）=FI（j）*x（k）*（e（1）*w2（j1）+e（2）*w2（j2）+e（3）*w2（j3）+e（4）*w2（j4））;
????????????????db1（j）=FI（j）*（e（1）*w2（j1）+e（2）*w2（j2）+e（3）*w2（

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

?????文件???????5916??2010-11-28?23:56??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter1\BPDLX.m

?????文件???????5831??2010-11-28?23:55??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter1\chapter1_1.m

?????文件??????93015??2009-08-29?16:54??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter1\data1.mat

?????文件??????92845??2009-08-29?16:54??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter1\data2.mat

?????文件??????92937??2009-08-29?16:54??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter1\data3.mat

?????文件??????93438??2009-08-29?16:54??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter1\data4.mat

?????文件???????3588??2010-11-16?19:01??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter10\chapter10.m

?????文件????????443??2009-10-06?15:58??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter10\class.mat

?????文件??????13978??2010-11-16?19:01??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter10\html\chapter10.html

?????文件???????4028??2010-11-16?19:01??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter10\html\chapter10.png

?????文件???????7775??2010-11-16?19:01??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter10\html\chapter10_01.png

?????文件??????73452??2010-11-16?23:13??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter10\MATLAB神經(jīng)網(wǎng)絡30個案例分析源代碼[Demo]chapter10.pdf

?????文件????????506??2010-11-16?20:41??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter10\Readme.txt

?????文件????????465??2009-10-06?21:11??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter10\sim.mat

?????文件???????2378??2010-11-16?19:16??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter10\stdlib.m

?????文件???????2934??2010-11-16?19:18??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter10\test.m

?????文件????????232??2009-09-21?13:03??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter11\city_location.mat

?????文件????????217??2009-12-21?19:56??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter11\diff_u.m

?????文件????????247??2010-01-30?10:30??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter11\energy.m

?????文件??????16888??2010-11-16?19:31??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter11\html\main.html

?????文件???????2282??2010-11-16?19:31??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter11\html\main.png

?????文件??????10699??2010-11-16?19:31??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter11\html\main_01.png

?????文件??????10374??2010-11-16?19:31??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter11\html\main_02.png

?????文件???????4756??2010-11-16?19:31??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter11\html\main_03.png

?????文件???????4805??2010-11-16?19:30??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter11\main.m

?????文件??????98491??2010-11-16?23:14??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter11\MATLAB神經(jīng)網(wǎng)絡30個案例分析源代碼[Demo]chapter11.pdf

?????文件????????487??2010-11-16?20:40??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter11\Readme.txt

?????文件???????4467??2010-11-16?22:31??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter12\chapter12.m

?????文件??????20033??2010-11-16?21:45??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter12\chapter12_wine.mat

?????文件??????15611??2010-11-16?22:32??《MATLAB?神經(jīng)網(wǎng)絡30個案例分析》源程序?數(shù)據(jù)\chapter12\html\chapter12.html

............此處省略432個文件信息