Every signal can be written as a sum of sinusoids with di® erent amplitudes and frequencies. The MATLAB command to compute the Fourier Transform and its inverse are respectively ® t and i® t

Spectral methods are a class of techniques used in applied mathematics and scientific computing to numerically solve certain differential equations, often involving the use of the Fast Fourier Transform. The idea is to write the solution of the diffe

Spectral methods are a class of techniques used in applied mathematics and scientific computing to numerically solve certain differential equations, often involving the use of the Fast Fourier Transform. The idea is to write the solution of the diffe

The discrete cosine transform (DC T) represents an image as a sum of sinusoids of varying magnitudes and frequencies. The dct2 function computes the two-dimensional discrete cosine transform (DC T) of an image. The DC T has the property that, f