## Discrete Fourirer Transform (DFT) #

## FFT #

From wiki : "A fast Fourier transform (FFT) is an algorithm that computes the discrete Fourier transform (DFT) of a sequence, or its inverse (IDFT). Fourier analysis converts a signal from its original domain (often time or space) to a representation in the frequency domain and vice versa."

## Phase - Frequency - Amplitude #

*3 fundamental properties of a wave. Two waves have the same amplitude and frequency but different phase*

Frequency (Hertz) -- number of circles in 1 second!

## References #

**MathBitsNotebook**-- Trigonometric Graphs Vocabulary**Math is fun**-- Amplitude, Period, Phase Shift and Frequency**BetterExplained**-- An Interactive Guide To The Fourier Transform- OSCON 2014 (video) -- Intuitive Understanding of the Fourier Transform and FFTs

^{â€¢}This is a draft note.