clear;
sfile=audioread（‘PhoneNumberB_2014.wav‘）;?%read?file
[x1x2]=detectpoint（sfile）;%detect?rising?and?falling?endpoints
N=500;%collect?points?（choose?500?is?because?the?shortest?signal?still?contain?1546?points）
Fs=8000;%sample?frequency

for?I=1:length（x1）
????X=fft（sfile（x1（I）:x1（I）+N-1））;
????figure（I+1）;
????stem（0:N-1abs（X（1:N）））;%show?all?the?7?signals
????ylabel（‘magX‘）;xlabel（‘k‘）;
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2014-09-14?04:11??Project\
?????文件?????????412??2014-09-18?12:40??Project\codeFFT.m
?????文件?????????898??2014-09-18?05:40??Project\detectpoint.m
?????文件?????????943??2014-09-18?06:18??Project\maincodeGA.m
?????文件???????47468??2014-09-14?04:14??Project\PhoneNumberA_2014.wav
?????文件???????35246??2014-09-14?04:14??Project\PhoneNumberB_2014.wav