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wavelet    
n. 小浪,微波

小浪,微波

wavelet
子波; 小波

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

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

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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  • 一文讲懂小波变换（wavelet transform） - 知乎
    Wavelet transform: F (\tau,s)=\frac {1} {\sqrt {|s|}} \int_ {-\infty}^ {\infty} f (t) \psi^* (\frac {t-\tau} {s}) dt ,其中 \psi^* 就是wavelet 比较一下这些公式不难发现，小波变换和傅里叶变换最主要区别就是基函数的不同，傅里叶用的是正弦函数，而小波变换用的是其他的函数，这里的
  • Quick start guide - Wavelet - GitHub Pages
    Quick start guide You installed Wavelet but it doesn't seem to work out of the box Try these steps to get started quickly! Most of the time you simply need to start playing some music before you're able to change settings in Wavelet Some music players don't work out of the box
  • 小波变换（Wavelet Transform）-CSDN博客
    小波变换 （wavelet transform，WT）是一种新的变换分析方法，它继承和发展了短时傅立叶变换局部化的思想，同时又克服了窗口大小不随频率变化等缺点，能够提供一个随频率改变的“时间-频率”窗口，是进行信号时频分析和处理的理想工具。
  • GitHub - Pittvandewitt Wavelet: A quick rundown on each feature and its . . .
    A quick rundown on each feature and its settings Contribute to Pittvandewitt Wavelet development by creating an account on GitHub
  • Wavelet: headphone equalizer - Apps on Google Play
    Wavelet enhances sound across many audio sources, not just a single app Enjoy consistent, optimized audio no matter where you’re listening From your favorite streaming services to offline media
  • 浅谈 Wavelet Matrix - 洛谷专栏
    前几天看到了这个数据结构，觉得比较优雅，记录一下。 由于 wavelet matrix 貌似没有正式的译名，这里将其称为小波矩阵。 总的来说，小波矩阵是一种基于值域二进制分解的静态简洁数据结构，其基于小波树 wavelet tree。
  • Wavelet均衡器中文版下载-Wavelet均衡器App下载 v26. 04安卓版-当快软件园
    Wavelet均衡器 是一款强大的系统级音频均衡器，专为Android用户设计，旨在优化耳机音质。 凭借集成的AutoEq功能，Wavelet提供了超过5000个基于Harman目标曲线的配置文件，确保耳机音质达到高保真标准。
  • What Is a Wavelet? - MATLAB Simulink - MathWorks
    What Is a Wavelet? A wavelet is a waveform of effectively limited duration that has an average value of zero and nonzero norm Many signals and images of interest exhibit piecewise smooth behavior punctuated by transients
  • 小波分析（数学术语）_百度百科
    本词条由 “科普中国”科学百科词条编写与应用工作项目 审核 。 小波 (Wavelet)这一术语，顾名思义，“小波”就是小的波形。 所谓“小”是指它具有衰减性；而称之为“波”则是指它的 波动性，其 振幅 正负相间的震荡形式。





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