Practice How FFT Works - 9.3.1 | 9. Fast Fourier Transform: Review of Fourier Analysis | Digital Signal Processing
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does FFT stand for?

πŸ’‘ Hint: Think about algorithms used in signal processing.

Question 2

Easy

Name one application of FFT.

πŸ’‘ Hint: Consider how we analyze sound signals.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What computational complexity does FFT achieve?

  • O(NΒ²)
  • O(N log N)
  • O(N)

πŸ’‘ Hint: Remember the difference between direct DFT and FFT.

Question 2

True or False: The FFT can only be applied when N is an even number.

  • True
  • False

πŸ’‘ Hint: Think about different sample sizes.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

If a signal is sampled at 1000 Hz and contains 1024 samples, describe how you would utilize the FFT and what benefits you might expect.

πŸ’‘ Hint: Consider efficiency and speed.

Question 2

Suppose you need to compute the DFT of a signal that is not a power of two in size. Explain how you would adapt the FFT process.

πŸ’‘ Hint: Think about adjustments to dataset sizes.

Challenge and get performance evaluation