What are the differences between the various FFT algorithms? [closed]

1. What are different types of FFT algorithms?
2. Which are the two algorithms in FFT?
3. What is the difference between DIF FFT and DIT FFT?
4. What does the FFT algorithm do?

What are different types of FFT algorithms?

A large number of FFT algorithms have been developed over the years, notably the Radix-2, Radix-4, Split- Radix, Fast Hartley Transform (FHT),, Quick Fourier Transform (QFT),, and the Decimation-in-Time-Frequency (DITF), algorithms.

Which are the two algorithms in FFT?

There are two main families of FFT algorithms: the Cooley-Tukey algorithm and the Prime Factor algorithm.

What is the difference between DIF FFT and DIT FFT?

In DITFFT, input is bit reversed while the output is in natural order, whereas in DIFFFT, input is in natural order while the output is in bit reversal order. DITFFT refers to reducing samples in time domain, whereas DIFFFT refers to reducing samples in frequency domain.

What does the FFT algorithm do?

As the name implies, the Fast Fourier Transform (FFT) is an algorithm that determines Discrete Fourier Transform of an input significantly faster than computing it directly. In computer science lingo, the FFT reduces the number of computations needed for a problem of size N from O(N^2) to O(NlogN) .