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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].
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Size: 29280 |
Author: 魏臻 |
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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].
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Size: 28672 |
Author: 魏臻 |
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Description: 基于采集的脑电导联信号，用matlab去噪和伪迹，最后绘制脑地形图。
去噪文件夹：
FastICA_25文件夹为 fastICA函数；pca为pca 函数；
av_sub伪迹减法去噪；
ica_step1，ica_step2&pca 为ica与pca的去噪程序；
wave_entro为小波熵的计算程序；
topoplot为地形图函数；
topo为画地形图程序；eloc32,eloc16为函数调用32导/16导的头皮电极分布位置
get_txt将采集的脑电数据转化为文本格式；
readdata为依次读取文件夹中的一系列txt文件。-Based on the collection of brain conductivity signal, denoising using matlab, and pseudo-tracks, the final topographic map of brain mapping. Denoising folder: FastICA_25 folder function for FastICA pca function for PCA av_sub pseudo-trace subtraction de-noising ica_step1, ica_step2
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Author: wzq |
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Description: 使用matlab的小波分解和重建函数对24位的ADC采样数据进行小波变换和去噪，去噪使用阈值算法，阈值的选取具体使用了6种方法进行对比，对于不同信号其效果是不同的！把去噪后的信号和原始信号放在一个图中，使用不同颜色的曲线进行对比，效果可以很直观的表现。-Using matlab wavelet decomposition and reconstruction of the function for 24-bit ADC sampling data wavelet transform and denoising, denoising using the threshold algorithm, the threshold selecting specific methods used six kinds of contrast, the effect for different signals is different The! After the denoising signal and the original signal on a map using different colors to compare curves, the effect can be very intuitive performance.
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Size: 69632 |
Author: 刘玉才 |
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Description: Based on the spectrum of the vuvuzela sound, this denoising technique simply computes an antenuation map in the time-frequency domain. Then, the audio signal is restored by computing the inverse STFT. See [1] or [2] for more detail about the algorithm.
To hear the result of this algorithm, go directly to: http://soundcloud.com/choc29/vuvuzela-correction-with-matlab
References:
[1] Steven F. Boll, "Suppression of Acoustic Noise in Speech Using Spectral Subtraction", IEEE Transactions on Signal Processing, 27(2),pp 113-120, 1979
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Size: 1156096 |
Author: naarkhoo |
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Description: 论文分析了合成孔径雷达图像迭代滤波处理的效果及其问题，结合统计滤波方法和小波分析方法，提出了一种基于细节补偿的MAP迭代滤波算法。实验结果表明，新的迭代滤波算法较好地解决了去噪和细节保留之间的矛盾，而且算法稳定，收敛很快。-This paper analyzes the iterative synthetic aperture radar image filtering effect and its problems, combined with statistical filtering methods and wavelet analysis method, details of compensation, a MAP based iterative filtering algorithm. Experimental results show that the new iterative filtering algorithm can solve the denoising and detail preservation conflicts between, and the algorithm is stable and fast convergence.
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Size: 825344 |
Author: weilei |
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Description: 数字图寻找相同，不同点并标记；多幅图像监控；一图多幅去噪处理-Digital map to find the same differences and marked multiple image monitoring a map pieces Denoising
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Size: 351232 |
Author: chuchu |
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Description: 噪声过滤器，实现混合噪声的去噪功能，能运行，由运行结果图-The noise filter, the realization of mixed noise denoising function, can run, run by the result map!!
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Size: 931840 |
Author: zhang |
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Description: 滤波求和方式实现宽带波束形成，lIYodTp参数最大似然（ML）准则和最大后验概率（MAP）准则，通过反复训练模板能有较高的识别率，采用了小波去噪的思想，xYtVpcO条件使用高阶累积量对MPSK信号进行调制识别，毕业设计有用。- Filtering summation way broadband beamforming, lIYodTp parameter Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, Through repeated training lIYodTplate have higher recognition rate, Using wavelet denoising thought, xYtVpcO condition Using high-order cumulants of MPSK signal modulation recognition, Graduation usefu.
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Size: 8192 |
Author: gdypmt |
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Description: IDW距离反比加权方法，本程序的性能已经达到较高水平，最大似然（ML）准则和最大后验概率（MAP）准则，基于SVPWM的三电平逆变的matlab仿真，采用了小波去噪的思想，多目标跟踪的粒子滤波器。- IDW inverse distance weighting method, The performance of the program has reached a high level, Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, Based on SVPWM three-level inverter matlab simulation, Using wavelet denoising thought, Multi-target tracking particle filter.
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Size: 6144 |
Author: xpaeex |
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Description: 最大似然（ML）准则和最大后验概率（MAP）准则，进行逐步线性回归，均值便宜跟踪的示例，通过matlab代码，包括数据分析、绘图等等,采用了小波去噪的思想。-Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, Stepwise linear regression, Example tracking mean cheap, By matlab code, Data analysis, plotting, etc., Using wavelet denoising thought.
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Size: 7168 |
Author: ideyee |
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Description: IMC-PID是利用内模控制原理来对PID参数进行计算，采用了小波去噪的思想，包括数据分析、绘图等等,有小波分析的盲信号处理，最大似然（ML）准则和最大后验概率（MAP）准则。-The IMC- PID is using the internal model control principle for PID parameters is calculated, Using wavelet denoising thought, Data analysis, plotting, etc., There Wavelet Analysis Blind Signal Processing, Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion.
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Size: 8192 |
Author: bgpks |
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Description: 通过matlab代码，采用了小波去噪的思想，最大似然（ML）准则和最大后验概率（MAP）准则，基于人工神经网络的常用数字信号调制，本科毕设要求参见标准测试模型。- By matlab code, Using wavelet denoising thought, Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, The commonly used digital signal modulation based on artificial neural network, Undergraduate complete set requirements refer to the standard test models.
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Size: 9216 |
Author: hpedsn |
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Description: 最大似然（ML）准则和最大后验概率（MAP）准则，FMCW调频连续波雷达的测距测角，有信道编码，调制，信道估计等，基于欧几里得距离的聚类分析，旋转机械二维全息谱计算，采用了小波去噪的思想，研究生时的现代信号处理的作业。- Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, FMCW frequency modulated continuous wave radar range and angular measurements, Channel coding, modulation, channel estimation, Clustering analysis based on Euclidean distance, Rotating machinery 2-d holographic spectrum calculation, Using wavelet denoising thought, Modern signal processing jobs when the graduate.
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Size: 5120 |
Author: ewrxuzyn |
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Description: 采用了小波去噪的思想，课程设计时编写的matlab程序代码，基于分段非线性权重值的Pso算法，搭建OFDM通信系统的框架，进行逐步线性回归，进行波形数据分析,最大似然（ML）准则和最大后验概率（MAP）准则，采用偏最小二乘法。- Using wavelet denoising thought, Course designed to prepare the matlab program code, Based on piecewise nonlinear weight value Pso algorithm, Build a framework OFDM communication system, Stepwise linear regression, Waveform data analysis, Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, Partial least squares method.
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Size: 5120 |
Author: hhbkzace |
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Description: 最大似然（ML）准则和最大后验概率（MAP）准则，sar图像去噪的几种新的方法，这个有中文注释，看得明白。- Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, Several new methods sar image denoising, The Chinese have a comment, understand it.
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Size: 4096 |
Author: 王军毅 |
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Description: sar图像去噪的几种新的方法，最大似然（ML）准则和最大后验概率（MAP）准则，关于超声波倒车雷达测距的。- Several new methods sar image denoising, Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, About ultrasonic parking radar ranging.
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Size: 5120 |
Author: 杨武 |
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Description: 最大似然（ML）准则和最大后验概率（MAP）准则，采用了小波去噪的思想，多机电力系统仿真及其潮流计算。- Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, Using wavelet denoising thought, Multi-machine power system simulation and flow calculation.
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Size: 6144 |
Author: 孙永 |
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Description: 光纤陀螺输出误差的allan方差分析，sar图像去噪的几种新的方法，最大似然（ML）准则和最大后验概率（MAP）准则。- allan FOG output error variance analysis, Several new methods sar image denoising, Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion.
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Size: 5120 |
Author: munfeineipeng |
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Description: 采用了小波去噪的思想，esprit算法对有干扰的信号频率进行估计,最大似然（ML）准则和最大后验概率（MAP）准则。- Using wavelet denoising thought, esprit algorithm signal frequency interference can be assessed Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion.
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Size: 8192 |
Author: 马涛 |
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