function?[Isrdoutdqoutyoutaioutbiouttdouttroutalout]?=?...
		?adpcm（sl?N?format）;
%ADPCM	Adaptive?differential?pulse?code?modulation.
%	[I?SR]?=?ADPCM（?SL?N）?encodes?the?PCM?coded?input?signal?SL
%	with?N?kbit/s?adaptive?differential?pulse?code?modulation?（ADPCM）?
%	where?N?is?selected?from?40?32?24?or?16?kbit/s.?
%	If?N?is?not?specified?the?bit?rate?is?set?to?N?=?32?kbit/s.
%
%	By?default?the?input?signal?SL?is?assumed?to?be?represented?with
%	14-bit?signed-magnitude?uniform?PCM?i.e.?its?amplitude?range?is
%	-8191?<=?sl?<=?8191.?This?input?format?is?also?selected?by
%	ADPCM（SL?N?‘lin‘）.?If?the?input?signal?is?8-bit?logarithmic?PCM
%	（mu-law?in?accordance?with?LIN2MU）?ADPCM（?SL?N?‘mu‘）?has?to
%	be?used.
%
%?	The?first?output?is?I?the?encoder?output?signal?which?represents?
%	the?bit?stream?over?the?channel.?The?samples?of?I?are?from?the?
%	discrete?alphabet?-2^（N/8-1）?...?+2^（N/8-1）.?The?second?（optional）?
%?	output?is?the?reconstructed?speech?signal?SR?（scaled?approximately?
%	between?-8191?and?+8191）?which?would?be?the?output?of?the?corres-
%	ponding?ADPCM?decoder?in?the?case?of?error-free?transmission?of?I.
%	
%	If?more?than?two?outputs?are?specified?a?whole?list?of
%	diagnostic?outputs?（internal?variables?of?the?algorithm）?becomes?
%	available:
%
%		[ISRDDQYAIBITDTRAL]?=?ADPCM（?SL?N）;
%
%	with?the?following?interpretation:
%
%		D	prediction?difference?signal
%		DQ	quatized?prediction?difference?signal
%		Y	scale?factor?for?adaptive?quantizer?
%		AI	recursive?predictor?coefficients?（2-column?matrix）
%		BI	non-recursive?predictor?coefficients?（6-column?matrix）
%		TD	tone?detector?signal
%		TR	transient?detector?signal
%		AL	speed?control?for?scale?factor?adaptation
%
%	Note?that?this?latter?option?is?VERY?memory?intensive?as?all
%	variables?are?vectors/matrices?of?the?size?of?the?input?signal.
%
%	This?function?uses?also?APUPDATE?AIUPDATE?BIUPDATE.
%?	The?decoder?is?provided?by?I_ADPCM.
%
%??	References:	
%	The?algorithm?follows?closely?the?ITU-T?（former?CCITT）
%	recommendation?G.726?“40?32?24?16?kbit/s?Adaptive?Differential
%?	Pulse?Code?Modulation?（ADPCM）“.?The?recommendation?specifies
%	various?fixed-point?formats?for?the?internal?variables?which?are
%	not?simulated?in?this?MATLAB?implementation.?However?most?of?the?
%	variable?names?etc.?are?consistent?with?the?recommendation.
?
%?1995-05-16?Martin?Kummernecker
%?1995-08-30?Gernot?Kubin?（g.kubin@ieee.org）



%?input?argument?checks?default?bit-rate?and?format?setting
if?（nargin??3）
	disp（‘ADPCM:?1?to?3?input?variables?required!‘）
	help?adpcm?return
end
if?nargin?==?1
	N?=?32;
????disp（‘*****?N?=?32?kbit/s?*****‘）;
end
a?=?N==[40?32?24?16];
if?（sum（a）?~=?1）
???N?=?32;
???disp（‘*****?N?=?32?kbit/s?*****‘）;
end;
if?nargin?<=?2
	format?=?‘lin‘;
end;
if?isstr（format）?~=?1
	error（‘ADPCM:?Input?format?must?be?string?variable!‘）
elseif?strcmp（format‘mu‘）?
	

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

?????文件?????113192??2010-03-11?20:13??speech_coding\speech_coding.pdf

?????文件?????????37??2010-03-11?20:17??speech_coding\readme.txt

?????文件???????1071??2003-05-21?00:25??speech_coding\quality\mnru.m

?????文件???????1194??2003-05-21?00:25??speech_coding\quality\segsnr.m

?????文件?????149453??2002-05-27?17:21??speech_coding\quality\mos\amr_decoder.exe

?????文件?????175747??2002-05-27?17:21??speech_coding\quality\mos\amr_encoder.exe

?????文件??????10210??2002-05-27?13:25??speech_coding\quality\mos\amr_readme.txt

?????文件?????769352??2002-05-27?17:21??speech_coding\quality\mos\cygwin1.dll

?????文件???????4054??2003-05-27?09:29??speech_coding\quality\mos\encode_decode.asv

?????文件???????4136??2003-05-27?09:43??speech_coding\quality\mos\encode_decode.m

?????文件?????175601??2002-05-27?17:21??speech_coding\quality\mos\g722_decoder.exe

?????文件?????176792??2002-05-27?17:21??speech_coding\quality\mos\g722_encoder.exe

?????文件???????7121??2002-05-27?13:25??speech_coding\quality\mos\g722_readme.txt

?????文件??????70144??2002-05-27?17:21??speech_coding\quality\mos\g729_decoder.exe

?????文件?????110592??2002-05-27?17:21??speech_coding\quality\mos\g729_encoder.exe

?????文件???????5632??2002-05-27?13:25??speech_coding\quality\mos\g729_readme.txt

?????文件????????461??2001-08-20?16:30??speech_coding\quality\mos\speechin.m

?????文件??????95744??2003-05-21?18:02??speech_coding\quality\mos\samples\f18.raw

?????文件??????95744??2003-05-27?09:49??speech_coding\quality\mos\samples\f28.raw

?????文件?????133118??2001-08-20?16:30??speech_coding\quality\mos\samples\f48.raw

?????文件?????130208??2001-08-20?16:30??speech_coding\quality\mos\samples\f58.raw

?????文件?????280692??2001-08-20?16:30??speech_coding\quality\mos\samples\f68.raw

?????文件?????122880??2001-08-20?16:30??speech_coding\quality\mos\samples\f98.raw

?????文件??????95744??2003-05-21?18:03??speech_coding\quality\mos\samples\m18.raw

?????文件??????95744??2003-05-21?18:03??speech_coding\quality\mos\samples\m28.raw

?????文件?????296564??2001-08-20?16:30??speech_coding\quality\mos\samples\m38.raw

?????文件?????115440??2001-08-20?16:30??speech_coding\quality\mos\samples\m48.raw

?????文件??????95744??2003-05-27?09:52??speech_coding\data\f18.raw

?????文件??????95744??2003-05-27?09:52??speech_coding\data\f28.raw

?????文件?????133118??2003-05-27?09:52??speech_coding\data\f48.raw

............此處省略50個文件信息