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matlab小波分析

于 2020-05-11 发布

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说明： matlab 一维二维小波分析处理，并比较不同小波去噪方法的去噪效果，指标为SNR和MSE(Matlab one dimensional two dimensional wavelet analysis processing.The denoising effects of different wavelet denoising methods are compared, and the indicators are SNR and MSE)

文件列表：

matlab小波分析\zhangning_homework4.m, 2307 , 2020-05-11
matlab小波分析\zhangning_homework5.m, 1743 , 2020-05-11
matlab小波分析\zhangning_homework7.m, 5923 , 2020-05-11
matlab小波分析\zhangning_homework8.m, 5270 , 2020-05-11
matlab小波分析\zhangning_homework9.m, 1473 , 2020-05-11

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说明：小波阈值去噪的基本思想是先设置一个临界阈值λ，若小波系数小于λ，认为该系数主要由噪声引起，去除这部分系数;若小波系数大于λ，则认为此系数主要是由信号引起，保留这部分系数，然后对处理后的小波系数进行小波逆变换得到去噪后的信号。(The basic idea of wavelet threshold denoising is to set a threshold value of lambda first. If the wavelet coefficient is less than lambda, it is considered that the coefficient is mainly caused by noise and this part of the coefficient is removed. If the wavelet coefficient is larger than lambda, it is considered that the coefficient is mainly caused by signal, and this part of the coefficient is retained. Then the denoised signal is obtained by inverse wavelet transform of the processed wavelet coefficient.)

2019-03-07 21:04:34下载

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matlab小波分析

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