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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does STFT stand for?
π‘ Hint: Think about the two domains we are analyzing.
Question 2
Easy
What is the purpose of using a window function in STFT?
π‘ Hint: It limits the portion of the signal being analyzed.
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 does the STFT analyze?
- Signal amplitude over time
- Frequency content over time
- Phase of the signal
π‘ Hint: Focus on what changes within a signal over time.
Question 2
True or False: The STFT can be used for both stationary and non-stationary signals.
- True
- False
π‘ Hint: Consider the definition of stationary vs. non-stationary signals.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a non-stationary signal with changing frequencies, outline how you would use the STFT to analyze this signal and what specific insights you could derive.
π‘ Hint: Consider the characteristics of the signal when defining window sizes.
Question 2
Construct and analyze a simple signal: 'x(t) = sin(2Ο10t) + sin(2Ο50t) * rect(t)', where 'rect' is the rectangular window function. Calculate its STFT over time.
π‘ Hint: Use numerical methods for a practical analysis, especially when dealing with the rect function.
Challenge and get performance evaluation