apodization

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apodization

(ap″ŏ-dĭ-zā′shŏn)
1. Alteration of a surface by removal of its irregularities.
2. Introduction of a gradual change into a mathematical function that would otherwise be discontinuous. It is used in radiology to smooth out choppy signals, and in optics, to blend diffractive steps.
References in periodicals archive ?
x] (t,[omega]) does not meet nonnegative demands that limit the application of Wigner-Ville distribution; In the final analysis Wavelet transform is still based on Fourier transform, so the selection of Apodisation function and the selection of wavelet base are the important factors that affect the effect.