精选优质文档-倾情为你奉上clear;clc;%y,fs=wavread(music1-2);qq=16;% 设置滤波器参数Wp=2*900;Ws=2*1500;Rp=0.1;Rs=60;Fs=32000;wp=Wp/Fs;ws=Ws/Fs;% 选择滤波器类型%N,Wpo=cheb2ord(wp,ws,Rp,Rs);%求切比雪夫2型归一化模拟低通滤波器的阶数%b,a=cheby2(N,Rs,Wpo);%设计滤波器N,Wpo=cheb1ord(wp,ws,Rp,Rs);%求切比雪夫1型归一化模拟低通滤波器的阶数b,a=cheby1(N,Rp,Wpo);%设计滤波器%N,Wpo=buttord(wp,ws,Rp,Rs);%求巴特沃斯型归一化模拟低通滤波器的阶数%b,a=butter(N,Wpo);%设计滤波器%N,Wpo=ellipord(wp,ws,Rp,Rs);%求椭圆型归一化模拟低通滤波器的阶数%b,a=ellip(N,Rp,Rs,Wpo);%设计椭圆滤波器%
