10秒アニメ　DFT, iDFT(離散フーリエ変換と逆離散フーリエ変換)

Just 10-seconds. Plots, lines and variables are animated.
It's desctription of DFT and iDFT.
Please Watch it repeatedly.

This video was inspired by the video("Fourier Transform, Fourier Series, and frequency spectrum" and "How the Discrete Fourier Transform (DFT) works - an overview")
   • Fourier Transform, Fourier Series, and fre...  
   • How the Discrete Fourier Transform (DFT) w...  


DFT matrix
   • calculation of discrete Fourier transform.  
The matrix M in the above video is these plotted complex numbers in this video.

   • アニメ　離散フーリエ変換行列　背景白  
   • アニメ　離散フーリエ変換行列　背景濃緑