function?Fea?=?cmvn（fea?varnorm）
%?performs?cepstral?mean?and?variance?normalization
%
%?Inputs:
%???-?fea?????:?input?ndim?x?nobs?feature?matrix?where?nobs?is?the?
%				number?of?frames?and?ndim?is?the?feature?dimension
%???-?varnorm?:?binary?switch?（false|true）?if?true?variance?is?normalized?
%???????????????as?well
%?Outputs:
%???-?Fea?????:?output?p?x?n?normalized?feature?matrix.
%
%?Omid?Sadjadi?
%?Microsoft?Research?Conversational?Systems?Research?Center

if?（?nargin?==?1?）?varnorm?=?false;?end?
????
mu?=?mean（fea?2）;
if?varnorm
????stdev?=?std（fea?[]?2）;
else
????stdev?=?1;
end

Fea?=?bsxfun（@minus?fea?mu）;
Fea?=?bsxfun（@rdivide?Fea?stdev）;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2015-03-23?15:51??MSR?Identity?Toolkit?v1.0\
?????目錄???????????0??2015-03-23?14:43??MSR?Identity?Toolkit?v1.0\code\
?????文件?????????720??2013-10-15?15:39??MSR?Identity?Toolkit?v1.0\code\cmvn.m
?????文件????????2963??2013-10-15?15:39??MSR?Identity?Toolkit?v1.0\code\compute_bw_stats.m
?????文件????????3030??2013-10-15?15:39??MSR?Identity?Toolkit?v1.0\code\compute_eer.m
?????文件????????3260??2013-10-15?15:39??MSR?Identity?Toolkit?v1.0\code\demo_gmm_ubm.m
?????文件????????4339??2013-10-15?15:39??MSR?Identity?Toolkit?v1.0\code\demo_gmm_ubm_artificial.m
?????文件????????5370??2013-10-15?15:40??MSR?Identity?Toolkit?v1.0\code\demo_ivector_plda.m
?????文件????????5812??2013-10-15?15:40??MSR?Identity?Toolkit?v1.0\code\demo_ivector_plda_artificial.m
?????文件????????2421??2013-08-16?17:40??MSR?Identity?Toolkit?v1.0\code\extract_ivector.m
?????文件????????1557??2013-10-15?15:40??MSR?Identity?Toolkit?v1.0\code\fea_warping.m
?????文件????????6148??2015-03-24?11:23??MSR?Identity?Toolkit?v1.0\code\gmm_em.m
?????文件????????5108??2013-10-15?15:40??MSR?Identity?Toolkit?v1.0\code\gplda_em.m
?????文件?????????223??2013-10-15?15:40??MSR?Identity?Toolkit?v1.0\code\hamming.m
?????文件?????????603??2013-10-15?15:40??MSR?Identity?Toolkit?v1.0\code\htkread.m
?????文件?????????534??2013-10-15?15:41??MSR?Identity?Toolkit?v1.0\code\htkwrite.m
?????文件????????2068??2013-10-15?15:41??MSR?Identity?Toolkit?v1.0\code\lda.m
?????文件?????????428??2013-10-15?15:41??MSR?Identity?Toolkit?v1.0\code\length_norm.m
?????文件????????4930??2013-10-15?15:41??MSR?Identity?Toolkit?v1.0\code\mapAdapt.m
?????文件?????????498??2013-10-15?15:41??MSR?Identity?Toolkit?v1.0\code\rm_dc_n_dither.m
?????文件????????2567??2013-10-15?15:41??MSR?Identity?Toolkit?v1.0\code\score_gmm_trials.m
?????文件????????2118??2013-10-15?15:41??MSR?Identity?Toolkit?v1.0\code\score_gplda_trials.m
?????文件????????5639??2013-10-15?15:41??MSR?Identity?Toolkit?v1.0\code\train_tv_space.m
?????文件????????1856??2013-10-15?15:41??MSR?Identity?Toolkit?v1.0\code\wcmvn.m
?????目錄???????????0??2015-03-23?14:43??MSR?Identity?Toolkit?v1.0\doc\
?????文件?????1082656??2013-10-11?10:39??MSR?Identity?Toolkit?v1.0\doc\MSR?Identity?Toolbox.docx
?????文件?????1276208??2013-10-15?15:45??MSR?Identity?Toolkit?v1.0\doc\MSR?Identity?Toolbox.pdf
?????文件?????????162??2013-08-28?03:13??MSR?Identity?Toolkit?v1.0\doc\~$entity?Toolbox-rev5.docx
?????文件?????????162??2013-10-07?09:14??MSR?Identity?Toolkit?v1.0\doc\~$entity?Toolbox-rev6.docx
?????文件???????24404??2013-10-15?15:35??MSR?Identity?Toolkit?v1.0\MSR-LA?No?distrib-OK?to?modify.docx
?????文件??????159491??2013-10-15?15:36??MSR?Identity?Toolkit?v1.0\MSR-LA?No?distrib-OK?to?modify.pdf
............此處省略1個文件信息