Practice Time Reversal (folding) (1.2.4) - Introduction to Signals and Systems
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Time Reversal (Folding)

Practice - Time Reversal (Folding)

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Practice Questions

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Question 1 Easy

Define time reversal in your own words.

💡 Hint: Think about how a reflection works.

Question 2 Easy

What is the mathematical representation of time reversal for Continuous-Time signals?

💡 Hint: Recall how we denote transformations mathematically.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the mathematical expression for time reversal of a Continuous-Time signal?

y(t) = x(t)
y(t) = x(-t)
y(t) = x(t-1)

💡 Hint: Think about how reflection works.

Question 2

Time reversal is typically used in which area?

True
False

💡 Hint: Consider how audio editing works.

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Challenge Problems

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Challenge 1 Hard

Given a Continuous-Time signal x(t) that rises from 0 to 5 between 0 ≤ t ≤ 2 and then drops to 0 for t > 2, determine the time-reversed signal y(t).

💡 Hint: Remember that you're flipping the entire timeline.

Challenge 2 Hard

In an audio processing scenario, a clip lasting 8 seconds is reversed. Calculate the new start and end time of the clip after reversal.

💡 Hint: Flip the timeline based on the original duration.

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