We have to design a second order Butterworth filter having a sampling frequency of 20 kHz and -3db cut of frequency at 2 kHz in visual C. Only low frequency signals can pass through this filter and the signals having the frequency higher than frequen

低通切比雪夫I型数字滤波器阶数为7阶 在2000Hz通带表现截止在2500Hz阻带边界在过渡带和阻带之间是单调下降波形. -Low-pass Chebyshev Type I digital filter order is 7  in the 2000Hz band pass-band cut-off at 2500Hz stopband performance in the transition zone and the boundary between t