function?[levaffsovad]=activlev（spfsmode）
%ACTIVLEV?Measure?active?speech?level?as?in?ITU-T?P.56?[LEVAFFSO]=（spFSMODE）
%
%Usage:?（1）?lev=activlev（sfs）;?????%?speech?level?in?units?of?power
%???????（2）?db=activlev（sfs‘d‘）;??%?speech?level?in?dB
%???????（3）?s=activlev（sfs‘n‘）;???%?normalize?active?level?to?0?dB
%
%Inputs:?sp?????is?the?speech?signal?（with?better?than?20dB?SNR）
%????????FS?????is?the?sample?frequency?in?Hz?（see?also?FSO?below）
%????????MODE???is?a?combination?of?the?following:
%???????????????0?-?omit?high?pass?filter?completely?（i.e.?include?DC）
%???????????????3?-?high?pass?filter?at?30?Hz?instead?of?200?Hz?（but?allows?mains?hum?to?pass）
%???????????????4?-?high?pass?filter?at?40?Hz?instead?of?200?Hz?（but?allows?mains?hum?to?pass）
%???????????????1?-?use?cheybyshev?1?filter
%???????????????2?-?use?chebyshev?2?filter?（default）
%???????????????e?-?use?elliptic?filter
%???????????????h?-?omit?low?pass?filter?at?5.5?12?or?18?kHz
%???????????????w?-?use?wideband?filter?frequencies:?70?Hz?to?12?kHz
%???????????????W?-?use?ultra?wideband?filter?frequencies:?30?Hz?to?18?kHz
%???????????????d?-?give?outputs?in?dB?rather?than?power
%???????????????n?-?output?a?normalized?speech?signal?as?the?first?argument
%???????????????N?-?output?a?normalized?filtered?speech?signal?as?the?first?argument
%???????????????l?-?give?both?active?and?long-term?power?levels
%???????????????a?-?include?A-weighting?filter
%???????????????i?-?include?ITU-R-BS.468/ITU-T-J.16?weighting?filter
%???????????????z?-?do?NOT?zero-pad?the?signal?by?0.35?s
%
%Outputs:
%????If?the?“n“?option?is?specified?a?speech?signal?normalized?to?0dB?will?be?given?as
%????the?first?output?followed?by?the?other?outputs.
%????????LEV????gives?the?speech?level?in?units?of?power?（or?dB?if?mode=‘d‘）
%???????????????if?mode=‘l‘?is?specified?LEV?is?a?row?vector?with?the?“long?term
%???????????????level“?as?its?second?element?（this?is?just?the?mean?power）
%????????AF?????is?the?activity?factor?（or?duty?cycle）?in?the?range?0?to?1
%????????FSO????is?a?column?vector?of?intermediate?information?that?allows
%???????????????you?to?process?a?speech?signal?in?chunks.?Thus:
%???????????????????????fso=fs;
%???????????????????????for?i=1:inc:nsamp
%???????????????????????????[levaffso]=activlev（sp（i:min（i+inc-1nsamp））fso[‘z‘?mode]）;
%???????????????????????end
%???????????????????????lev=activlev（[]fso）
%???????????????is?equivalent?to:
%???????????????????????lev=activlev（sp（1:nsamp）fsmode）
%???????????????but?is?much?slower.?The?two?methods?will?not?give?identical?results
%???????????????because?they?will?use?slightly?different?thresholds.?Note?you?need
%???????????????the?‘z‘?option?for?all?calls?except?the?last.
%????????VAD????is?a?boolean?vector?the?same?length?as?sp?that?acts?as?an?approximate?voice?activity?detector

%For?completeness?we?list?here?the?contents?of?the?FSO?structure:
%
%???ffs?:?sample?frequency
%???fmd?:?mod

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????16677??2018-03-23?05:51??activlev.m
?????文件????????8389??2014-08-06?02:25??activlevg.m
?????文件????????1793??2014-01-16?15:43??atan2sc.m
?????文件????????2217??2018-03-08?15:33??axisenlarge.m
?????文件????????4728??2014-04-25?14:51??bark2frq.m
?????文件????????1705??2014-04-25?14:51??berk2prob.m
?????文件????????3455??2018-02-23?01:00??besselratio.m
?????文件????????4020??2018-02-23?01:00??besselratioi.m
?????文件????????3305??2014-01-16?15:43??bitsprec.m
?????文件????????2486??2018-02-13?23:29??cblabel.m
?????文件????????2013??2014-01-16?15:43??ccwarpf.m
?????文件????????2046??2014-01-16?15:43??cent2frq.m
?????文件????????2131??2014-01-16?15:43??cep2pow.m
?????文件????????2239??2014-01-16?15:43??choosenk.m
?????文件????????1603??2014-01-16?15:43??choosrnk.m
?????文件???????15178??2018-03-28?22:33??Contents.m
?????文件????????9112??2017-09-18?03:48??convfft.m
?????文件????????3975??2014-01-16?15:43??correlogram.m
?????文件????????3819??2014-01-16?15:43??distchar.m
?????文件????????3422??2014-01-16?15:43??distchpf.m
?????文件????????3688??2014-01-16?15:43??disteusq.m
?????文件????????4641??2014-01-16?15:43??distisar.m
?????文件????????3736??2014-01-16?15:43??distispf.m
?????文件????????4170??2014-01-16?15:43??distitar.m
?????文件????????3601??2014-01-16?15:43??distitpf.m
?????文件????????1982??2014-01-16?15:43??ditherq.m
?????文件????????2756??2016-01-07?02:13??dlyapsq.m
?????文件????????3479??2014-01-16?15:43??dualdiag.m
?????文件???????26494??2014-01-16?15:43??dypsa.m
?????文件????????6638??2018-02-06?23:14??enframe.m
?????文件????????3906??2014-01-16?15:43??entropy.m
............此處省略238個文件信息