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3 definitions found
 for wavelet
From The Collaborative International Dictionary of English v.0.48 :

  Wavelet \Wave"let\, n.
     A little wave; a ripple.
     [1913 Webster]

From WordNet (r) 3.0 (2006) :

      n 1: a small wave on the surface of a liquid [syn: ripple,
           rippling, riffle, wavelet]

From The Free On-line Dictionary of Computing (30 December 2018) :

      A waveform that is bounded in both frequency
     and duration.  Wavelet tranforms provide an alternative to
     more traditional Fourier transforms used for analysing
     waveforms, e.g. sound.
     The Fourier transform converts a signal into a continuous
     series of sine waves, each of which is of constant frequency
     and amplitude and of infinite duration.  In contrast, most
     real-world signals (such as music or images) have a finite
     duration and abrupt changes in frequency.
     Wavelet transforms convert a signal into a series of wavelets.
     In theory, signals processed by the wavelet transform can be
     stored more efficiently than ones processed by Fourier
     transform.  Wavelets can also be constructed with rough edges,
     to better approximate real-world signals.
     For example, the United States Federal Bureau of Investigation
     found that Fourier transforms proved inefficient for
     approximating the whorls of fingerprints but a wavelet
     transform resulted in crisper reconstructed images.
     http://mat.sbg.ac.at/~uhl/wav.html)">SBG Austria (http://mat.sbg.ac.at/~uhl/wav.html).
     ["Ten Lectures on Wavelets", Ingrid Daubechies].

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