Description: 给定函数，变换到频域内，比较短时傅里叶变换大、小视窗和小波变换的区别，生成时频分析图-A given function, transform the frequency domain, more short-time Fourier transform, and a small window and the difference between wavelet transform to generate time-frequency analysis Platform: |
Size: 1024 |
Author:郭珈 |
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Description: The S transform is variable window of short time Fourier transform (STFT) or an
extension of wavelet transform (WT). It is based on a scalable localizing Gaussian
window and supplies the frequency dependent resolution. In this tutorial, we
introduce the fundamental function of S transform and the generalized S transform.
Furthermore, we present some applications of S transform: seismogram analysis,
analysis of engine induction noise in acceleration, and power quality analysis. Then
compare the result of S transform with other time-frequency analysis and exhibit some
different windows of S transform.
Platform: |
Size: 833536 |
Author:Nurita |
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Description: 小波变换（wavelettransform，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。-Wavelet transform (WT) is a new transform analysis method, which inherits and develops the idea of localized short-time Fourier transform, and overcomes the shortcomings of window size not with frequency change, can provide a change with the frequency of Time-frequency window, which is an ideal tool for signal time-frequency analysis and processing. Platform: |
Size: 1024 |
Author:Li Zhendong |
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Description: 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。(Wavelet transform (wavelet transform WT) is a new analysis method, it inherited and developed the short-time Fu Liye transform the idea of localization, but also overcomes the disadvantages of window size does not change with frequency, can provide a time - frequency with the frequency change of the window, is an ideal tool for time-frequency analysis and processing the signal.) Platform: |
Size: 1024 |
Author:橡树
|
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Description: 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。它的主要特点是通过变换能够充分突出问题某些方面的特征，能对时间(空间)频率的局部化分析，通过伸缩平移运算对信号(函数)逐步进行多尺度细化，最终达到高频处时间细分，低频处频率细分，能自动适应时频信号分析的要求，从而可聚焦到信号的任意细节，解决了Fourier变换的困难问题，成为继Fourier变换以来在科学方法上的重大突破。(Wavelet transform (WT) is a new transform analysis method. It inherits and develops the idea of localization of short-time Fourier transform and overcomes the shortcomings that window size does not vary with frequency. It can provide a frequency-dependent The Time-Frequency window is ideal for time-frequency analysis and processing of signals. Its main feature is that by transforming some features that can fully highlight some aspects of the problem, the localization of the time (space) frequency can be analyzed, and the signal (function) can be gradually and multi-scale refined by the scaling operation, finally reaching the high frequency Time subdivision, frequency subdivision at low frequencies, can automatically adapt to the requirements of time-frequency signal analysis, which can focus on any details of the signal to solve the difficulties of Fourier transform has become a major breakthrough in the scientific method since Fourier transform.) Platform: |
Size: 1024 |
Author:丁帅 |
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Description: 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(Wavelet transform (WT) is a new method of transform analysis. It inherits and develops the idea of short time Fu Liye transform localization. At the same time, it overcomes the shortcoming that the size of the window does not change with the frequency, and can provide a "time frequency" window that changes with the frequency.) Platform: |
Size: 6569984 |
Author:七心岛屿 |
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Search - short window wavelet