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wavelet

XDict

n. 小浪,微波

PyDict

小浪,微波

Taiwan MOE computer dictionary (moecomp)

wavelet
子波; 小波

WordNet (r) 3.0 (2006) (WordNet)

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

The Collaborative International Dictionary of English v.0.48 (gcide)

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

The Free On-line Dictionary of Computing (foldoc)

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.

{SBG Austria (http://mat.sbg.ac.at/~uhl/wav.html)}.

["Ten Lectures on Wavelets", Ingrid Daubechies].

(1994-11-09)

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wavelet	查看　wavelet　在百度字典中的解释	百度英翻中〔查看〕
wavelet	查看　wavelet　在Google字典中的解释	Google英翻中〔查看〕
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