ex07012.m

来自「数字信号处理（机械工业出版社）的源码」· M 代码 · 共 5 行

% Chapter 7: Example 7.12 filter design
%
[b,a] = cheby2(9,20,300/500);
freqz(b,a,512,1000); title('n=9 Chebyshev Type II Filter')