function?[levaffso]=activlev（spfsmode）
%ACTIVLEV?Measure?active?speech?level?as?in?ITU-T?P.56?[LEVAFFSO]=（SPFSMODE）
%
%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:
%????????????r?-?raw?omit?input?filters?（default?is?200?Hz?to?5.5?kHz）
%????????????0?-?no?high?pass?filter?（i.e.?include?DC）
%????????????4?-?high?pass?filter?at?40?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?kHz
%????????????d?-?give?outputs?in?dB?rather?than?power

%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?[levfso]=activlev（sp（i:i+inc-1）fsomode）;?end
%
%????????????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?threshods.

%For?completeness?we?list?here?the?contents?of?the?FSO?structure:
%
%???ffs?:?sample?frequency
%???fmd?:?mode?string
%????nh?:?hangover?time?in?samples
%????ae?:?smoothing?filter?coefs
%????bl?:?200Hz?HP?filter?numerator
%????al?:?200Hz?HP?filter?denominator
%????bh?:?5.5kHz?LP?filter?numerator
%????ah?:?5.5kHz?LP?filter?denominator
%????ze?:?smoothing?filter?state
%????zl?:?200Hz?HP?filter?state
%????zh?:?5.5kHz?LP?filter?state
%????zx?:?hangover?max?filter?state
%??emax?:?maximum?envelope?exponent?+?1
%???ssq?:?signal?sum?of?squares
%????ns?:?number?of?signal?samples
%????ss?:?sum?of?speech?samples?（not?actually?used?here）
%????kc?:?cumulative?occupancy?counts

%??????Copyright?（C）?Mike?Brookes?2008
%??????Version:?$Id:?activlev.mv?1.7?2008/04/04?08:19:21?dmb?Exp?$
%
%???VOICEBOX?is?a?MATLAB?toolbox?for?speech?processing.
%???Home?page:?http://www.ee.ic.ac.uk/hp/staff/dmb/voicebox/voicebox.html
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%???This?program?is?free?software;?you?can?redistribute?it?and/or?modify
%???it?under?the?terms?of?the?GNU?General?Public?License?as?published?by
%???the?Free?Software?Foundation;?either?version?2?of?the?License?or
%???（at?your?option）?any?later?version.
%
%???This?program?is?distributed?in?the?hope?that?it?will?be?useful
%???but?WITHOUT?ANY?WARRANTY;?without?even?the?implied?warranty?of
%???MERCHANTABILITY?or?FITNESS?FOR?A?PARTICULAR?PURPOSE

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????10096??2008-04-04?09:19??voicebox\activlev.m

?????文件???????1798??2007-11-23?19:47??voicebox\atan2sc.m

?????文件???????1679??2007-05-04?08:01??voicebox\bark2frq.m

?????文件???????3310??2007-05-04?08:01??voicebox\bitsprec.m

?????文件???????2018??2007-05-04?08:01??voicebox\ccwarpf.m

?????文件???????2136??2007-05-04?08:01??voicebox\cep2pow.m

?????文件???????2244??2007-05-04?08:01??voicebox\choosenk.m

?????文件???????1608??2007-05-04?08:01??voicebox\choosrnk.m

?????文件???????8063??2008-09-24?12:14??voicebox\Contents.m

?????文件???????3824??2007-05-04?08:01??voicebox\distchar.m

?????文件???????3427??2007-05-04?08:01??voicebox\distchpf.m

?????文件???????3629??2007-05-04?08:01??voicebox\disteusq.m

?????文件???????4646??2007-05-04?08:01??voicebox\distisar.m

?????文件???????3741??2007-05-04?08:01??voicebox\distispf.m

?????文件???????4175??2007-05-04?08:01??voicebox\distitar.m

?????文件???????3606??2007-05-04?08:01??voicebox\distitpf.m

?????文件???????1987??2007-05-04?08:01??voicebox\ditherq.m

?????文件???????2751??2007-05-04?08:01??voicebox\dlyapsq.m

?????文件???????2483??2007-05-04?08:01??voicebox\dualdiag.m

?????文件??????26180??2007-05-04?08:01??voicebox\dypsa.m

?????文件???????2142??2009-02-28?10:20??voicebox\enframe.m

?????文件???????3911??2007-05-04?08:01??voicebox\entropy.m

?????文件???????2442??2007-05-04?08:01??voicebox\erb2frq.m

?????文件??????15550??2008-05-22?18:17??voicebox\estnoisem.m

?????文件???????2466??2007-05-04?08:01??voicebox\ewgrpdel.m

?????文件???????2658??2008-03-26?10:30??voicebox\figbolden.m

?????文件???????4207??2007-05-04?08:01??voicebox\findpeaks.m

?????文件???????2429??2008-09-24?10:58??voicebox\finishat.m

?????文件???????2488??2007-05-04?08:01??voicebox\frac2bin.m

?????文件???????5264??2007-05-04?08:01??voicebox\fram2wav.m

............此處省略147個文件信息