How Do You Sketch x[2n] from a Discrete Signal?

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SUMMARY

The discussion focuses on sketching the discrete signal x[2n] derived from the original discrete signal x[n]. Participants clarify that the x-axis of the second sketch represents n as 2n from the first sketch, indicating a time-scaling effect. This transformation compresses the signal in the time domain, effectively reducing the number of samples by half. Understanding this relationship is crucial for accurately plotting discrete signals in digital signal processing.

PREREQUISITES
  • Understanding of discrete signals and their representation
  • Familiarity with time-scaling concepts in signal processing
  • Basic knowledge of plotting graphs for discrete functions
  • Experience with digital signal processing (DSP) fundamentals
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  • Study the principles of time-scaling in discrete signals
  • Learn about the effects of sampling rates on signal representation
  • Explore digital signal processing tools for signal visualization
  • Investigate the implications of aliasing in discrete signals
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Students and professionals in electrical engineering, digital signal processing enthusiasts, and anyone involved in analyzing or visualizing discrete signals.

Huumah
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Discrete signal x[n] is shown in the first picture. Sketch x[2n]

LQSkztR.png



Answer
QQXy9nu.png


Can anyone ecplain why x[2n] is like that. I can understand how to plot it if i have a continuous time signal
 
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On the second picture's x axis, n = 2n of the first picture's x axis.
 

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