Design a low-pass digital filter for filtering analog signals. Its passband frequency is1.25kHz，and stopband frequency is 3.4kHz.The sampling frequency is 8kHz.The normalized cutoff frequency of the digital low-pass filter is ( )
A、ωp=2500π，ωs=6800π;
B、ωp=2500π，ωs=0.85π;
C、ωp=0.3125π，ωs=6800π;
D、ωp=0.3125π，ωs=0.85π
发布时间：2024-09-26 18:24:02
