帮我写一个java的双二阶滤波
时间: 2023-03-10 14:31:51 浏览: 50
我可以为你提供一个java语言实现的双二阶滤波的示例代码:public class DoubleSecondOrderFilter {
private double a0;
private double a1;
private double a2;
private double b1;
private double b2;
private double xlast1;
private double xlast2;
private double ylast1;
private double ylast2;
public DoubleSecondOrderFilter(double a0, double a1, double a2, double b1, double b2, double xlast1, double xlast2, double ylast1, double ylast2) {
this.a0 = a0;
this.a1 = a1;
this.a2 = a2;
this.b1 = b1;
this.b2 = b2;
this.xlast1 = xlast1;
this.xlast2 = xlast2;
this.ylast1 = ylast1;
this.ylast2 = ylast2;
}
public double filter(double xn) {
double yn = a0 * xn + a1 * xlast1 + a2 * xlast2 - b1 * ylast1 - b2 * ylast2;
xlast2 = xlast1;
xlast1 = xn;
ylast2 = ylast1;
ylast1 = yn;
return yn;
}
}