%%?清空環(huán)境變量
clc
clear

%%?訓(xùn)練數(shù)據(jù)預(yù)測數(shù)據(jù)提取及歸一化

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

%四個(gè)特征信號(hào)矩陣合成一個(gè)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(jī)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(jī)提取1500個(gè)樣本為訓(xùn)練樣本，500個(gè)樣本為預(yù)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（15

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???????3920??2018-05-28?13:14??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\實(shí)驗(yàn)代碼\BP調(diào)參前.m

?????文件???????3971??2018-05-31?17:42??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\實(shí)驗(yàn)代碼\BP調(diào)參后.m

?????文件?????332326??2018-05-27?19:14??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\實(shí)驗(yàn)截圖\數(shù)據(jù)采集.jpg

?????文件??????17939??2018-05-28?01:47??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\實(shí)驗(yàn)截圖\調(diào)參前\正確率.jpg

?????文件??????40866??2018-05-05?16:11??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\實(shí)驗(yàn)截圖\調(diào)參前\結(jié)果分類圖.png

?????文件??????37064??2018-05-05?16:11??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\實(shí)驗(yàn)截圖\調(diào)參前\結(jié)果分類表.png

?????文件??????15651??2018-05-28?01:48??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\實(shí)驗(yàn)截圖\調(diào)參后\正確率.jpg

?????文件??????65726??2018-05-28?01:46??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\實(shí)驗(yàn)截圖\調(diào)參后\誤差圖.jpg

?????文件??????97663??2018-05-28?01:45??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\實(shí)驗(yàn)截圖\調(diào)參后\調(diào)參后.jpg

?????文件??????93015??2009-08-29?16:54??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\采集聲音數(shù)據(jù)\data1.mat

?????文件??????92845??2009-08-29?16:54??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\采集聲音數(shù)據(jù)\data2.mat

?????文件??????92937??2009-08-29?16:54??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\采集聲音數(shù)據(jù)\data3.mat

?????文件??????93438??2009-08-29?16:54??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\采集聲音數(shù)據(jù)\data4.mat

?????目錄??????????0??2018-06-30?14:29??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\實(shí)驗(yàn)截圖\調(diào)參前

?????目錄??????????0??2018-06-30?14:29??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\實(shí)驗(yàn)截圖\調(diào)參后

?????目錄??????????0??2018-06-30?14:29??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\實(shí)驗(yàn)代碼

?????目錄??????????0??2018-06-30?14:29??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\實(shí)驗(yàn)截圖

?????目錄??????????0??2018-06-30?14:29??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別\采集聲音數(shù)據(jù)

?????目錄??????????0??2018-06-30?14:30??bp神經(jīng)網(wǎng)絡(luò)進(jìn)行語音識(shí)別

-----------?---------??----------?-----??----

???????????????987361????????????????????19