function?[dbmagphagrdw]?=?freqz_m（ba）;
%?Modified?version?of?freqz?subroutine
%?------------------------------------
%?[dbmagphagrdw]?=?freqz_m（ba）;
%?db?=?Relative?magnitude?in?dB?computed?over?0?to?pi?radians
%?mag?=?absolute?magnitude?computed?over?0?to?pi?radians?
%?pha?=?Phase?response?in?radians?over?0?to?pi?radians
%?grd?=?Group?delay?over?0?to?pi?radians
%?w?=?501?frequency?samples?between?0?to?pi?radians
%?b?=?numerator?polynomial?of?H（z）?（for?FIR:?b=h）
%?a?=?denominator?polynomial?of?H（z）?（for?FIR:?a=[1]）
%
[Hw]?=?freqz（ba1000‘whole‘）;
H?=?（H（1:1:501））‘;?w?=?（w（1:1:501））‘;
mag?=?abs（H）;
db?=?20*log10（（mag+eps）/max（mag））;
pha?=?angle（H）;
%?pha?=?unwrap（angle（H））;
grd?=?grpdelay（baw）;
%?grd?=?diff（pha）;
%?grd?=?[grd（1）?grd];
%?grd?=?[0?grd（1:1:500）;?grd;?grd（2:1:501）?0];
%?grd?=?median（grd）*500/pi;

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

?????文件????????855??2010-11-30?22:45??freqz_m2.m

?????文件????????129??2010-11-30?15:37??ideal_bs.m

?????文件????????335??2010-11-30?17:40??jet.asv

?????文件????????600??2010-11-30?18:07??jet.m

?????文件???????1486??2010-11-30?23:04??jet1.m

?????文件????????882??2010-12-01?09:44??jet2.m

-----------?---------??----------?-----??----

?????????????????4287????????????????????6