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According to this method of designing, the filter should have which of the following in large number?

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According to this method of designing, the filter should have which of the following in large number?

(a) Only poles

(b) Both poles and zeros

(c) Only zeros

(d) None of the mentioned

I had been asked this question during an interview for a job.

The origin of the question is Pade Approximation Method in division Digital Filters Design of Digital Signal Processing

1 Answer

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Best answer
The correct choice is (b) Both poles and zeros

Explanation: The major limitation of Pade approximation method, namely, the resulting filter must contain a large number of poles and zeros.

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