clc;clear;clf;
[xfs]=wavread（‘a1.wav‘）;?
n=0:pi/10000:2*pi;
n=0:length（x）-1;
x0=x;
N=4;?????????????????????????????????%四個麥克風的麥克風陣

%========================================================================%
????????????????????????????%畫x0的語譜圖
figure（1）;
N_w=200;
N_fft=1024;?
N_overlap=round（0.5*N_w）;
t=（1:length（x））/fs;
FSize?=?18;
Spec=abs（spectrogram（x0hanning（N_w）N_overlapN_fftfs））.^2;
imagesc（0:（N_w-N_overlap）/fs:t（end）0:500:（fs/2）10*log10（Spec））;
set（gca‘FontSize‘FSize?）;
axis（‘xy‘）;
xlabel（?‘Time??（ms）‘?‘FontSize‘?FSize?）;
ylabel（?‘Frequency??（Hz）‘?‘FontSize‘?FSize?）;
title?（?‘SPECTROGRAM‘?‘FontSize‘?FSize?）;

[x1n1]=shift（x0-10min（n）max（n））;????%分別對信號平移103050個點
[x2n2]=shift（x0-30min（n）max（n））;
[x3n3]=shift（x0-50min（n）max（n））;??

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????54344??2011-05-03?13:23??a1.wav
?????文件????????9696??2011-05-03?13:24??MicrophoneArrayDereverberation.m