FFT vs DWT -
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Individual wavelet localized pretty well in both time (space) and frequency
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Fourier expansion functions localized very well in frequency but not all in space or time
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Both fast, linear operations; invertible and orthogonal
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rotation in function space
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From Impulse (delta function) space to that of coefficients of Fourier or Wavelet functions
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Wavelet Transformation on N points performed as log2N rotations in multiresolution fashion
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wavelet - localized in space and frequency;
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Basis consists of scalings and translations of Mother functions
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