function?M3?=?blockframes（s?fs?m?n）?%?對信號s進行分幀（分段，加窗）

%?s?輸入信號
%?fs?采樣頻率
%?m是兩幀開始之間的距離（m=100）
%?n是一幀之中的采樣點數?（n=256）

l?=?length（s）;?
nbframe?=?floor（（l?-?n）?/?m）?+?1;
for?i?=?1:n
for?j?=?1:nbframe
M（i?j）?=?s（（（j?-?1）?*?m）?+?i）;
end
end
h?=?hamming（n）;
M2?=?diag（h）?*?M;
for?i?=?1:nbframe
M3（:?i）?=?fft（M2（:?i））;?%?M3是包含所有框架的矩陣
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????2792??2006-09-07?20:37??1.mat
?????文件????????5408??2006-09-06?21:04??2.mat
?????文件????????8024??2006-09-06?21:04??3.mat
?????文件???????10640??2006-09-06?21:04??4.mat
?????文件???????13256??2006-09-06?21:04??5.mat
?????文件???????15872??2006-09-06?21:03??6.mat
?????文件???????18488??2006-09-06?21:03??7.mat
?????文件???????21104??2006-09-06?21:27??8.mat
?????文件?????????639??2020-05-19?12:43??blockframes.asv
?????文件?????????411??2020-05-19?12:45??blockframes.m
?????文件????????3560??2020-05-19?12:58??demo.asv
?????文件????????3599??2020-05-19?16:46??demo.m
?????文件?????????393??2020-05-19?12:42??disteu.m
?????文件????????7988??2006-09-07?17:05??hs_err_pid696.log
?????文件?????????550??2020-05-19?23:41??melfb.asv
?????文件?????????550??2020-05-19?23:46??melfb.m
?????文件?????????484??2020-05-19?12:38??mfcc.asv
?????文件?????????703??2020-05-19?17:59??mfcc.m
?????文件?????????748??2020-05-19?23:44??readme.txt
?????目錄???????????0??2020-05-16?13:26??test\
?????文件?????????842??2020-05-19?23:41??test.asv
?????文件?????????842??2020-05-19?23:46??test.m
?????文件??????127756??2020-05-14?14:10??test\s1.wav
?????文件??????128048??2020-05-14?14:17??test\s2.wav
?????文件???????32710??2020-05-14?14:17??test\s3.wav
?????文件???????64046??2020-05-14?14:19??test\s4.wav
?????文件??????258606??2020-05-14?14:22??test\s5.wav
?????文件???????63990??2020-05-14?14:26??test\s6.wav
?????文件???????30042??2020-05-14?14:29??test\s7.wav
?????文件???????64046??2020-05-14?14:31??test\s8.wav
?????目錄???????????0??2020-05-16?13:26??train\
............此處省略13個文件信息