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Elementary,Middle School,High School,College,University,PHD
| Teaching Since: | May 2017 |
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| Questions Answered: | 66690 |
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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
In Section 4.8.1, we considered the use of prefiltering to avoid aliasing. In practice, the antialiasing filter cannot be ideal. However, the nonideal characteristics can be at least partially compensated for with a discrete-time system applied to the sequence x[n] that is the output of the C/D converter. Consider the two systems in Figure P4.62-1. The antialiasing filters Hideal(jΩ) and Haa(jΩ) are shown in Figure P4.62-2. H (ejω) in Figure P4.62-1 is to be specified to compensate for the nonideal characteristics of Haa(jΩ). Sketch H (ejω) so that the two sequences x[n] and w[n] are identical.

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