(C) An analogue filter is described by the following transfer function: H(s) = S+0.5 The equivalent digital filter is to
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(C) An analogue filter is described by the following transfer function: H(s) = S+0.5 The equivalent digital filter is to
(C) An analogue filter is described by the following transfer function: H(s) = S+0.5 The equivalent digital filter is to be designed with a 3 dB cut-off frequency at 120 Hz and minimum attenuation stopband of 300 Hz. (1) Using the Bilinear 2-Transform determine the z-domain transfer function for the analogue filter. Plot the pole-zero positions. [8 marks] (ii) Derive the difference equation for the digital filter and sketch the direct- form implementation of the digital filter. (5 marks]
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