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Which of the following methods are inappropriate to design high pass and many band pass filters?

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Which of the following methods are inappropriate to design high pass and many band pass filters?

(a) Impulse invariance

(b) Mapping of derivatives

(c) Impulse invariance & Mapping of derivatives

(d) None of the mentioned

I had been asked this question in examination.

Question is from Frequency Transformations in the Digital Domain topic in chapter Digital Filters Design of Digital Signal Processing

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Right option is (c) Impulse invariance & Mapping of derivatives

To elaborate: We know that the impulse invariance method and mapping of derivatives are inappropriate to use in the designing of high pass and band pass filters.

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