function?[Y]?=?ISTFT（X?N?WINDOW?NOVERLAP）;

%?Short-time?Fourier?Transform?Synthesis?by?Overlap-add?method
%
%???Y?=?ISTFT（X?N?WINDOW?NOVERLAP）
%
%?????Y?:?time?domain?output?vector
%?????X?:?input?stFT?matrix?（NFFT?x?L）
%?????N?:?the?length?of?output?samples
%?????WINDOW?:?window?function
%?????NOVERLAP?:?#?of?overlaped?samples
%
%??????????????????????by?Taesu?Kim
%???????????????????????????2003.?1.?26.
%

NFFT?=?（size（X?1）-1）*2;
%?NFFT?=?（size（X?1）+1）*2;

L?=?size（X?2）;

WLEN?=?size（WINDOW?1）;
SHIFT?=?WLEN?-?NOVERLAP;

W?=?zeros（N+WLEN+NFFT?1）;
X?=?[X;conj（X（end-1:-1:2:））];
%?X?=?[zeros（1L）;X;zeros（1L）;conj（X（end:-1:1:））];

Y?=?zeros（N+WLEN+NFFT?1）;

for?i?=?1:L
	sp?=?SHIFT*i?+?1;
	tmp?=?real（ifft（X（:?i）））;
	
	W（sp:sp+WLEN-1）?=?W（sp:sp+WLEN-1）?+?WINDOW.^2;
	Y（sp:sp+WLEN-1）?=?Y（sp:sp+WLEN-1）?+?WINDOW.*tmp（1:WLEN）;
	
%?	W（sp:sp+WLEN-1）?=?W（sp:sp+WLEN-1）?+?WINDOW;
%?	Y（sp:sp+NFFT-1）?=?Y（sp:sp+NFFT-1）?+?real（ifft（X（:?i）））;
%?	Y（sp:sp+WLEN-1）?=?Y（sp:sp+WLEN-1）?+?tmp（1

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????1219??2012-10-22?21:30??istft.m
?????文件????????3583??2012-12-03?20:17??ivabss.m
?????文件?????????887??2012-10-22?21:30??stft.m