语音识别系统设计

基于matlab语音识别系统，包含音频文件，特征提取选取mfcc，基于DTW的识别技术。用于孤立词的识别。

function NormMatrix = CMN（Matrix）



[rc]=size（Matrix）;
NormMatrix=zeros（rc）;
for i=1:c
    MatMean=mean（Matrix（:i））;  %Derives mean for each column i in utterance
    NormMatrix（:i）=Matrix（:i）-MatMean; %Subtracts mean from each element in
                                         %column i
end

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2009-02-01 15:21  SpeechRec\
     目录           0  2009-02-01 15:20  SpeechRec\SpeechRec\
     文件         311  2009-02-01 15:20  SpeechRec\SpeechRec\CMN.m
     文件         562  2009-02-01 15:20  SpeechRec\SpeechRec\deltacoeff.m
     文件        1320  2009-02-01 15:20  SpeechRec\SpeechRec\DTWScores.m
     文件         763  2009-02-01 15:22  SpeechRec\SpeechRec\Important Information!.txt
     文件        3549  2005-02-21 15:22  SpeechRec\SpeechRec\melbankm.m
     文件        2205  2009-02-01 15:21  SpeechRec\SpeechRec\mfccf.m
     文件         972  2009-02-01 15:21  SpeechRec\SpeechRec\myDTW.m
     文件        5022  2009-02-01 15:21  SpeechRec\SpeechRec\myVAD.m
     文件        2390  2009-02-01 15:21  SpeechRec\SpeechRec\nreduce.m
     文件        2506  2009-02-01 15:21  SpeechRec\SpeechRec\Recognition.m
     文件        1940  2009-02-01 15:21  SpeechRec\SpeechRec\setTemplates.m
     目录           0  2008-03-22 18:19  SpeechRec\SpeechRec\SpeechData\
     目录           0  2008-03-22 18:19  SpeechRec\SpeechRec\SpeechData\Amir\
     文件       27184  2007-09-13 20:57  SpeechRec\SpeechRec\SpeechData\Amir\5_1.wav
     文件       23172  2007-09-13 21:12  SpeechRec\SpeechRec\SpeechData\Amir\5_10.wav
     文件       25160  2007-09-14 04:14  SpeechRec\SpeechRec\SpeechData\Amir\5_11.wav
     文件       20134  2007-09-14 15:03  SpeechRec\SpeechRec\SpeechData\Amir\5_12.wav
     文件       26124  2007-09-14 15:04  SpeechRec\SpeechRec\SpeechData\Amir\5_13.wav
     文件       31190  2007-09-14 15:09  SpeechRec\SpeechRec\SpeechData\Amir\5_14.wav
     文件       27612  2007-09-14 15:10  SpeechRec\SpeechRec\SpeechData\Amir\5_15.wav
     文件       29204  2007-09-14 15:11  SpeechRec\SpeechRec\SpeechData\Amir\5_16.wav
     文件       27044  2007-09-14 15:12  SpeechRec\SpeechRec\SpeechData\Amir\5_17.wav
     文件       33404  2007-09-14 15:13  SpeechRec\SpeechRec\SpeechData\Amir\5_18.wav
     文件       22572  2007-09-14 15:14  SpeechRec\SpeechRec\SpeechData\Amir\5_19.wav
     文件       32726  2007-09-13 20:59  SpeechRec\SpeechRec\SpeechData\Amir\5_2.wav
     文件       25994  2007-09-14 15:15  SpeechRec\SpeechRec\SpeechData\Amir\5_20.wav
     文件       27856  2007-09-13 21:01  SpeechRec\SpeechRec\SpeechData\Amir\5_3.wav
     文件       26858  2007-09-13 21:01  SpeechRec\SpeechRec\SpeechData\Amir\5_4.wav
     文件       33898  2007-09-13 21:03  SpeechRec\SpeechRec\SpeechData\Amir\5_5.wav
............此处省略95个文件信息