Description: 这组程序是基于小波变换的信号奇异性检测和去噪的例程，每个程序的具体功能见程序源码。-this group are based on the wavelet transform singularity detection signal denoising and the routines, Every procedure specific functions to see source codes. Platform: |
Size: 6144 |
Author:吴雪梅 |
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Description: 利用小波方法对语音信号进行去噪，取得了很好的效果。-using wavelet method of voice signal denoising, and achieved very good results. Platform: |
Size: 1024 |
Author:付荣申 |
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Description: 小波变换用于语音信号阈值去噪的一个matlab程序，主要功能是阈值搜索，小波分解重构-wavelet transform for the voice signal denoising threshold of a Matlab procedures, the main function is to search threshold, wavelet decomposition Reconstruction Platform: |
Size: 1024 |
Author:张旭颜 |
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Description: 数字信号处理的应用之一是从含有加性噪声的信号中去除噪声。现有被噪声污染的信号x[k]=s[k]+d[k],式中： 为原始信号d[k]为均匀分布的白噪声。
（1）分别产生50点的序列s[k]和白噪声序列d[k],将二者叠加生成x[k],并在同一张图上绘出x0[k],d[k]和x[k]的序列波形。
（2）均值滤波可以有效去除叠加在低频信号上的噪声。已知3点滑动平均数字滤波器的单位脉冲响应为h[k]=[1,1,1 k=0,1,2],计算y[k]=x[k]*h[k],在同一张图上绘出前50点y[k],s[k]和x[k]的波形，比较序列y[k]和s[k]。
-digital signal processing applications from one containing additive noise signal denoising. Existing noise pollution was a signal x [k] = s [k] d [k], where : of the original signal d [k] uniform distribution of white noise. (1) have 50 points each sequence s [k] and white noise sequence d [k] superposition of the two generation x [k] and the same is likely to draw a map x0 [k] d [k] and x [k] waveform sequence. (2) mean filter can effectively remove superimposed on the low-frequency noise on the signal. 3:00 known moving average digital filter unit for pulse response h [k] = [k = 0,1,2 1,1,1] Calculation y [k] = x [k]* h [k], the same is likely to draw a map before 50 y [k] s [k] and x [k] waveform sequence comparison y [k] s and [k]. Platform: |
Size: 28672 |
Author:魏臻 |
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Description: 自己写的基于LMS的自适应噪声抵消,例子是对一WAV声频信号去噪,效果不错,对这方面感兴趣的可以-wrote based on the LMS adaptive noise cancellation, for example, is a WAV audio signal denoising. good results, with interested can s Platform: |
Size: 1024 |
Author:秦品乐 |
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Description: 基于基本LMS的自适应噪声抵消程序,对一音频信号去噪,效果不错-based on the basic LMS adaptive noise cancellation procedures, an audio signal denoising good results Platform: |
Size: 1024 |
Author:秦品乐 |
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Description: 语音信号进行瞬时维纳滤波的程序,进行信号的去噪处理以便于识别或后续过程-speech signals instantaneous Wiener filtering procedures, signal denoising for identification or follow-up in the process Platform: |
Size: 1024 |
Author:张洁 |
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Description: 随机信号处理中的经典去噪算法集合，有很多非常好的算法，值得研究。-Random signal processing Denoising Algorithm classic collection, there are many very good algorithms, is worth studying. Platform: |
Size: 25600 |
Author:牟建超 |
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Description: 语音信号去噪，在MATLAB开发环境下，对含噪声的语音信号进行小波变换，根据阈值去噪的原理去噪，然后逆变换得到增强的语音信号-Speech Signal Denoising in the MATLAB development environment, including noise on the voice signal wavelet transform, in accordance with the principle of threshold denoising Denoising, and then inverse transform enhanced speech signal Platform: |
Size: 4096 |
Author:王鹏 |
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Description: 雷达回波信号消噪处理，实现对噪声雷达信号的恢复处理。-Radar Echo Signal Denoising treatment, implementation of the noise radar signal the resumption of treatment. Platform: |
Size: 286720 |
Author:zhangxu |
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Description: 本代码是基于Bandelet的硬阈值SAR图像去噪，结果与小波变换进行对比，结果表示其在峰值信噪比，边缘保持系数上均有一定的提高。压缩包中有程序和SAR图像。-This code is based on Bandelet SAR image denoising with a hard threshold .the results were compared with the wavelet transform, and the results indicated that in the peak signal to noise ratio(PSNR)and edge-preserving index(EPI), there is a certain on the increase. There are procedures and SAR images in this compression package. Platform: |
Size: 270336 |
Author:周宇 |
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Description: 小波去噪的几篇论文
Automatic identification and Removal of ocular artifacts from EEG using Wavelet transform
小波去噪理论及MATLAB实现研究
小波分析在信号降噪处理中的应用
小波软阈值滤波在信号去噪中的有效性研究-Wavelet denoising of several papers Automatic identification and Removal of ocular artifacts from EEG using Wavelet transform Wavelet Denoising MATLAB implementation of wavelet theory and analysis of noise in the signal processing using wavelet soft threshold filter effectiveness in signal denoising study Platform: |
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Author:STyuco |
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Description: 用于一维信号的小波包去噪，选取特定的阈值，采用最优小波基-For one-dimensional signal denoising using wavelet packet , select a specific threshold, the optimal wavelet Platform: |
Size: 61440 |
Author:沈鑫 |
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Description: BA于MATLAB的小波包分析在信号降噪中的应用(Application of wavelet packet analysis of BA in MATLAB to signal denoising) Platform: |
Size: 6144 |
Author:情空飞飞· |
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Description: （1）心电信号预处理
心电信号是一种低频且含有众多噪声干扰的信号。针对心电信号存在的
噪声干扰问题，本文采用了平稳小波变换结合双变量阈值的方法对其进行去 噪处理。通过对心电信号进行八层平稳小波变换，得到不同的小波系数，采
用双变量阈值函数表达式对其进行处理得到新的小波系数，最后进行逆平稳
小波变换实现小波重构，完成心电信号去噪。Matlab 仿真结果显示，本文算
法的准确率较高，信噪比达到 84.5934dB。 （2）心电信号波形识别
反映心电信号的特征部分往往是信号的突变点，因此需要对心电信号的
突变点进行识别检测。本文通过采用二次 B 样条小波对去噪后的心电信号
进行四层平稳小波变换，在第四尺度上对心电信号的 R 波进行波形检测。 在第二尺度上以正确检测 R 波为基础，实现 Q 波和 S 波的波峰、起始点及
终止点检测。为了保证检测精度，本文设置了误检漏检机制。最后在第五尺 度实现了 P 波和 T 波波峰、起始点及终止点检测。仿真结果表明本文的算
法检测精度较高，准确率达到 99.81%。(This paper proposes an efficient method of ECG signal denoising using the adaptive dualthreshold filter (ADTF) and the discrete wavelet transform (DWT). The aim of this method isto bring together the advantages ofthese methods in order to improve the filtering ofthe ECGsignal. The aim of the proposed method is to deal with the EMG noises, the power lineinterferences and the high frequency noises that could perturb the ECG signal. This algorithm is based on three steps of denoising,) Platform: |
Size: 3146752 |
Author:雨季96 |
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Search - signal denoising matlab