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fft

于 2020-06-24 发布
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代码说明:

说明:  用于计算一个实数或复数序列的离散傅里叶变换和一个复数序列的逆离散傅里叶变换(fast fourier transform subroutine for real valued series)

文件列表:

fft.docx, 13225 , 2019-07-16

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  • simpsal
    提取图像显著图,小波融合 非常详细,有用(Extract image saliency map, wavelet fusion is very detailed, useful for)
    2011-11-02 12:32:07下载
    积分:1
  • wavedec2
    说明:  本代码利用小波变换,实现了两幅图像的融合,使用了小波分析工具箱wavemenu,使用了小波分析函数wavedec2()进行小波变换(The code using wavelet transform, to achieve a fusion of two images, using wavelet analysis toolbox wavemenu, using wavelet analysis function wavedec2 () wavelet transform)
    2011-04-04 14:03:23下载
    积分:1
  • q4
    说明:  提出了一种基于复解析小波变换的相位诊断齿轮故障的方法。复解析小波变换将Hilbert变换与小波分析紧密结合在一起,具有自适应分析能力。利用复解析小波变换得到齿轮振动信号的相位,其功率谱图上可提取调制边频带结构来识别故障模式。试验结果表明这种方法可有效应用于齿轮局部故障诊断中。(A new method using the phase based on complex analytical wavelet transform for fault diagnosis of gears was proposed. The phase of vibration signals of gears is got by complex analytical wavelet transform, which combines Hilbert transform with wavelet transform tightly and possesses adaptive analysis ability. By making spectrum analysis of the phase, the sideband structure in power spectrum can be protruded, and the fault pattern can be identified. Experimental results show that the proposed method is effective in local defect detection of gears.)
    2012-02-02 15:25:22下载
    积分:1
  • rtcmas_client
    小波包分析提取振动信号中的特征频率,以及能量谱分析计算-(wavelet packet analysis vibration signal from the characteristic frequency, and the energy spectrum analysis )
    2011-12-01 12:35:47下载
    积分:1
  • biterate
    二次小波变换的方法用于数字信号码元速率估计(wavelet transform for bitrate estimation of digital modulated signal)
    2012-06-05 10:29:32下载
    积分:1
  • Three-level-wavelet-
    图像的三级小波分解,小波变换,小波图像重构.(Three-level wavelet decomposition of image.)
    2011-12-11 19:50:23下载
    积分:1
  • uwt
    基于第二代小波的非抽样小波变换应用程序,可以用来小波转换(Non-sampling based on second generation wavelets, wavelet transform application)
    2012-03-26 09:37:44下载
    积分:1
  • compression
    主要用于图像经小波变换压缩图像,并计算压缩后的图像压缩性能即压缩比和信噪比(Mainly used for image compression by wavelet transform image, and calculate the compressed image compression performance that the compression ratio and signal to noise ratio)
    2010-01-29 16:10:02下载
    积分:1
  • chapter10
    《小波分析理论与MATALB R2007 实现》第10章源码(wavelet analysis using matlab)
    2012-10-08 22:41:10下载
    积分:1
  • dwt
    离散小波分解,把图像分为高频细节与低频概貌。(Discrete wavelet decomposition, the image is divided into high and low frequency detail overview)
    2021-04-29 11:38:43下载
    积分:1
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