An LTI system with impulse response h 1 n is an ideal lowpass filter with cutoff frequency c 2 The frequency response of the system is H 1 (e j ) Suppose a new LTI system with impulse response h 2 n is obtained from h 1 n by h 2 n (1) n h 1 n Sketch the frequency response H 2 (e j ) rInl Unit circl...

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An LTI system with impulse response h 1 [n] is

An LTI system with impulse response h 1 [n] is an ideal lowpass filter with cutoff frequency

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An LTI system with impulse response h₁[n] is an ideal lowpass filter with cutoff frequency ω_c = π/2. The frequency response of the system is H₁(e^jω). Suppose a new LTI system with impulse response h₂[n] is obtained from h₁[n] by

h₂[n] = (–1)ⁿ h₁[n]

Sketch the frequency response H₂(e^jω).

Transcribed Image Text:

rInl Unit circle Mth-order pole at z -0, M2 2 and M is an integer z plane Re xInl rin

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Discrete Time Signal Processing

ISBN: 978-0137549207

2nd Edition

Authors: Alan V. Oppenheim, Rolan W. Schafer

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Question Posted: May 26, 2011 02:56 AM

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