设计汉宁FIR低通滤波器，规格如下：通带边缘频率=2kHz的，阻带边缘频率=2.5KHZ，通带波纹δP=0.005，阻带波纹δs=0.005，和10kHz的采样率。-Design a Hanning FIR lowpass filter meeting the following specifications: passband edge frequency=2kHz, stopband edge frequency=2.5kHz, passband ripple δp=0.005, stopband rippleδs=0.005, and sampling rate of 10kHz.