scipy butterworth带通滤波器的Java替代方案

import org.apache.commons.math3.filter.IIRFilter;
import org.apache.commons.math3.filter.IIRFilterCoefficients;
import org.apache.commons.math3.filter.IIRFilterParameters;
import org.apache.commons.math3.filter.IIRFilterProvider;
import org.apache.commons.math3.filter.IIRFilterProviderImpl;

public class ButterworthFilterExample {
    public static void main(String[] args) {
        // 设计带通滤波器
        double[] lowFreq = {10.0}; // 低截止频率
        double[] highFreq = {100.0}; // 高截止频率
        IIRFilterCoefficients coeffs = IIRFilterCoefficients.design(FilterType.BANDPASS, lowFreq, highFreq);

        // 创建滤波器
        IIRFilterParameters params = new IIRFilterParameters(coeffs);
        IIRFilterProvider provider = new IIRFilterProviderImpl(params);
        IIRFilter filter = provider.getFilter();

        // 应用滤波器
        double[] input = {1.0, 2.0, 3.0, 4.0, 5.0}; // 输入信号
        double[] output = new double[input.length]; // 输出信号
        for (int i = 0; i < input.length; i++) {
            output[i] = filter.step(input[i]);
        }

        // 打印输出信号
        for (double value : output) {
            System.out.println(value);
        }
    }
}