exa5_24.m

matlab应用实例。如：FIR、IIR数字滤波器设计等。

%--------------------------------------------------------------------------
% exa060607_fircls1.m,   for example 6.6.7;
% to test fircls1 and to design lowpass FIR filter;
%-------------------------------------------------------------------------

N = 55; 
wo = 0.3;
dp = 0.02; 
ds = 0.008;
b = fircls1(N,wo,dp,ds,'plots'); % Plot magnitude response
subplot(311)
ylabel('幅频响应')
grid
subplot(312)
ylabel('通带纹波')
grid
subplot(313)
ylabel('阻带纹波')
grid
xlabel('归一化频率(Nyquist频率=1)')