下一段matlab程序，输入滤波器的指标即可计算出IIR滤波器x与y的系数

好的，以下是一个基于输入滤波器指标计算IIR滤波器x与y系数的Matlab程序：

function [b, a] = iir_filter_coeffs(wp, ws, Rp, Rs, fs)
% Inputs:
%   wp: passband edge frequency in Hz
%   ws: stopband edge frequency in Hz
%   Rp: passband ripple in dB
%   Rs: stopband attenuation in dB
%   fs: sampling frequency in Hz
% Outputs:
%   b: numerator coefficients of the IIR filter
%   a: denominator coefficients of the IIR filter

% Calculate analog filter specifications
Wp = 2*pi*wp/fs;
Ws = 2*pi*ws/fs;
Rp = 10^(Rp/20) - 1;
Rs = 10^(Rs/20);

% Calculate analog filter order and cutoff frequency
[n, Wn] = buttord(Wp, Ws, Rp, Rs, 's');

% Calculate analog filter transfer function
[b, a] = butter(n, Wn, 's');

% Convert analog filter to digital filter
[b, a] = bilinear(b, a, fs);
end

这个函数接受五个输入参数：通带边缘频率 `wp`，阻带边缘频率 `ws`，通带波动 `Rp`，阻带衰减 `Rs`，以及采样频率 `fs`。函数返回两个输出参数：IIR滤波器的Numerator系数 `b` 和Denominator系数 `a`。您可以将这些系数输入到 `filter()` 函数中，以应用IIR滤波器。