Which of the following is true when the response of the single pole filter is in the limit cycle?(a) Actual non-linear system acts as an equivalent non-linear system(b) Actual non-linear system acts as an equivalent linear system(c) Actual linear system acts as an equivalent non-linear system(d) Actual linear system acts as an equivalent linear systemI had been asked this question in exam.I need to ask this question from Round Off Effects in Digital Filters in portion Digital Filters Design of Digital Signal Processing

Which of the following is true when the response of the single pole fi

1.	Which of the following is true when the response of the single pole filter is in the limit cycle?(a) Actual non-linear system acts as an equivalent non-linear system(b) Actual non-linear system acts as an equivalent linear system(c) Actual linear system acts as an equivalent non-linear system(d) Actual linear system acts as an equivalent linear systemI had been asked this question in exam.I need to ask this question from Round Off Effects in Digital Filters in portion Digital Filters Design of Digital Signal Processing
Answer» RIGHT answer is (B) Actual non-linear system acts as an equivalent linear system Explanation: We note that when the response of the single pole FILTER is in the limit CYCLE, the actual non-linear system acts as an equivalent linear system with a pole at z=1 when the pole is positive and z=-1 when the poles is NEGATIVE.

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