An LTI system with impulse response h 1 [n] is an ideal lowpass filter with cutoff frequency
Question:
An LTI system with impulse response h1[n] is an ideal lowpass filter with cutoff frequency ωc = π/2. The frequency response of the system is H1(ejω). 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(ejω).
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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Related Book For
Discrete Time Signal Processing
ISBN: 978-0137549207
2nd Edition
Authors: Alan V. Oppenheim, Rolan W. Schafer
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