Which algorithm for computing the Fast Fourier Transform (FFT) uses a factorization into powers of 4?

Radix 4 FFT Algorithm DIT

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University
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Easy
Doraemon Ng
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Radix-2 FFT
Radix-4 FFT
Both of the above
None of the above
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many points are involved in a butterfly operation in Radix-4 FFT?
2
3
4
5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which FFT algorithm is generally faster for non power-of-2 sized inputs?
Radix-2 FFT
Radix-4 FFT
Both of the above
None of the above
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which factorization is used by Radix-2 FFT?
powers of 2
powers of 4
powers of 8
powers of 16
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main disadvantage of Radix-4 FFT over Radix-2 FFT?
More complex algorithm
Slower for non power of 2 sized inputs
Requires more memory
Slower for large inputs
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