Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > Which of the following is the advantage of Ha...
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Which of the following is the advantage of Hanning window over rectangular window?
- a)More side lobes
- b)Less side lobes
- c)More width of main lobe
- d)None of the mentioned
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Which of the following is the advantage of Hanning window over rectang...
Explanation: The Hanning window has less side lobes and the leakage is less in this windowing technique.
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Which of the following is the advantage of Hanning window over rectang...
Advantage of Hanning window over rectangular window:
Less side lobes
- When a signal is multiplied by a window function, it is essentially convolved with the window's Fourier transform. The Fourier transform of a rectangular window has a sinc-shaped response, which results in high side lobes.
- The Hanning window, on the other hand, has a smoother response in the frequency domain, which results in lower side lobes. This is achieved by tapering the edges of the window using a cosine function.
- The lower side lobes of the Hanning window make it useful in applications where a high dynamic range is required, such as in spectral analysis or filter design.
Conclusion:
- In summary, the Hanning window has an advantage over the rectangular window in that it produces lower side lobes, which can improve the accuracy and precision of spectral analysis or filter design.
Less side lobes
- When a signal is multiplied by a window function, it is essentially convolved with the window's Fourier transform. The Fourier transform of a rectangular window has a sinc-shaped response, which results in high side lobes.
- The Hanning window, on the other hand, has a smoother response in the frequency domain, which results in lower side lobes. This is achieved by tapering the edges of the window using a cosine function.
- The lower side lobes of the Hanning window make it useful in applications where a high dynamic range is required, such as in spectral analysis or filter design.
Conclusion:
- In summary, the Hanning window has an advantage over the rectangular window in that it produces lower side lobes, which can improve the accuracy and precision of spectral analysis or filter design.
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Which of the following is the advantage of Hanning window over rectangular window?a)More side lobesb)Less side lobesc)More width of main lobed)None of the mentionedCorrect answer is option 'B'. Can you explain this answer?
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