14.9 Sketch transmission specifications for a bandstop filter that is required to pass signals over the bands 0 ≤ f ≤ 12 kHz and 20 kHz ≤ f ≤ ∞ with Amax of 0.4 dB. The stopband extends from f = 15 kHz to f = 18 kHz, with a minimum required attenuation of 60 dB.
14.9 Sketch transmission specifications for a bandstop filter that is required to pass signals over the bands 0 ≤ f ≤ 12 kHz and 20 kHz ≤ f ≤ ∞ with Amax of 0.4 dB. The stopband extends from f = 15 kHz to f = 18 kHz, with a minimum required attenuation of 60 dB.
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