Practice - Short-Time Fourier Transform (STFT)
Practice Questions
Test your understanding with targeted questions
What does STFT stand for?
💡 Hint: Think about the two domains we are analyzing.
What is the purpose of using a window function in STFT?
💡 Hint: It limits the portion of the signal being analyzed.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the STFT analyze?
💡 Hint: Focus on what changes within a signal over time.
True or False: The STFT can be used for both stationary and non-stationary signals.
💡 Hint: Consider the definition of stationary vs. non-stationary signals.
1 more question available
Challenge Problems
Push your limits with advanced challenges
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.
💡 Hint: Consider the characteristics of the signal when defining window sizes.
Construct and analyze a simple signal: 'x(t) = sin(2π10t) + sin(2π50t) * rect(t)', where 'rect' is the rectangular window function. Calculate its STFT over time.
💡 Hint: Use numerical methods for a practical analysis, especially when dealing with the rect function.
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Reference links
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