Design a digital low-pass filter with a passband edge frequency of 1kHz, a stopband edge frequency of 1.5kHz and a sampling frequency of 8kHz. What are the corresponding normalized edge frequencies ωp and ωs?
A: ωp=0.25π，ωs=0.375π
B: ωp=0.125π，ωs=0.1875π
C: ωp=0.25， ωs=0.375
D: ωp=0.125， ωs=0.1875
A: ωp=0.25π，ωs=0.375π
B: ωp=0.125π，ωs=0.1875π
C: ωp=0.25， ωs=0.375
D: ωp=0.125， ωs=0.1875
举一反三
- 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
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