Search - 分形噪声

[Other] 1/f噪声

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Platform: | Size: 778 | Author: liujuan_liu@163.com | Hits:

[Speech/Voice recognition/combine] endpoint_detection

Description: 噪声环境下的端点检测在语音信号分析和识别中占有重要地位。文中将分形理论中的分形记盒维数应用到端点检测算法中，采用了基于分形记盒维数与短时能零比相结合的端点检测算法，以分形记盒维数为主要判决条件，并在判决门限的设定上采用了自适应机制。-Noise environment endpoint detection in speech signal analysis and identification play an important role. Wen will be fractal theory of fractal box dimension in mind applied to the endpoint detection algorithm, using case based on fractal dimension and short-term in mind can be nil to a combination of endpoint detection algorithm to the fractal box dimension in mind as the main sentence conditions, and decision threshold setting on the use of adaptive mechanisms.
Platform: | Size: 891904 | Author: 陈宏 | Hits:

[Fractal program] Plusnoisegeneratefractalterrain

Description: 分形加噪声地形生成Plus noise generated fractal terrain-Plus noise generated fractal terrain Plus noise generated fractal terrain
Platform: | Size: 3736576 | Author: 江涛 | Hits:

[matlab] feature

Description: 该文件包含了一些常用的声辐射噪声的特征提取方法，包括波形的包络特征，高阶谱特征，分形维特征，奇异指数特征等。-The document contains some common acoustic feature extraction method of noise, including waveform envelope characteristics, higher order spectral features, characteristic of fractal dimension, singular index characteristics.
Platform: | Size: 346112 | Author: 李娜 | Hits:

[Speech/Voice recognition/combine] fenxing

Description: 为提高语音端点检测(VAD)在较低信噪比(10 dB)下的准确率,提出一种基于短时分形维数的改进算法。结合语音信号的特点,对2种常用的语音信号分形维数计算方法进行了比较和选择,同时采用动态跟随门限值实现语音端点的自适应检测。试验结果表明:对于信噪比6~10 dB的带噪语音,此方法可以实现整段语音的检测,而且具有一定的噪声鲁棒性,系统运行期间能够自适应调整门限值以适应环境噪声的变化,提高了VAD算法的准确率。这个是源码matlab。-In order to improve voice activity detection (VAD) in low SNR (10 dB) accuracy under proposed based on short-time fractal dimension of the improved algorithm. Combined with the characteristics of the speech signal, to 2 commonly used fractal dimension of speech signals are compared and calculated choice to follow the same dynamic endpoint threshold adaptive detection of voice. The results showed that: 6 ~ 10 dB for the signal to noise ratio of noisy speech, this method can detect the entire speech, but has some noise robustness, the system can be adaptively adjusted during operation to adapt to environmental noise threshold of changes to improve the accuracy of VAD algorithms. This is the source matlab.
Platform: | Size: 79872 | Author: liuhongfu | Hits:

[Fractal program] haizabo1

Description: 分形随机噪声信号处理的小波谱相关方法，挺好的一篇文章-Faction paper
Platform: | Size: 324608 | Author: peng shb | Hits:

[Technology Management] XHQYJSDZS

Description: 为了快速准确地计算电噪声奇异性, 在介绍信号奇异性计算方法的基础上, 将其引入到电噪声信号分析中, 提出一种新的基于多重分形奇异性指数计算信号电噪声的方法。新方法利用多重分形来提取电噪声中可以表达信号内在细节特征的奇异点Hê lder指数, 通过计算电噪声中Hê lder指数的差异来进行噪声分析。通过对实测电迁移和光耦电噪声的计算分析表明, 电迁移后期奇异性指数会发生突变而良品光耦器件和次品光耦器件在信号噪声的平均H ê lder指数方面差异明显。实验结果证明本方法是一种快速可靠的电噪声奇异性计算方法。-In order to computing e lectr ica l no ise singu la rity fast and reliable, propo sed a new mult-i fracta l based e lec trical no ise s ingular computationa lme thod. Used new methods to ex trac tmu lt-i fractal no ise, cou ld be exp ressed in the signa l cha racter istics of the interna l de ta ils o f singu la r po in tsHê lder index by ana ly zing e lec trica l no ise inHê lder index for the difference in no ise ana lys is. Th ismethod o fm ig ration and optocoupler electrical no ise analysis show s thatm ig ra tion, the late singu larity index w ill happen andmutation w ill be a fter the opening o f aluminum good optocoupler devices and faulty dev ices in the average no iseHê lder index significant d ifference. The expermi enta l resu lts show that th ismethod in the e lectrical no ise signa ls in the computation and ana lys is o f very practica .l It is a fast and re liab le electr ica l no ise singu la rity computa tiona lmethod.
Platform: | Size: 345088 | Author: baibai | Hits:

[VC/MFC] fenxingheweishu

Description: 针对不同噪声强度的影响，分析了分形盒维数的抗噪能力。实验结果表明: 在信噪比较大时，分形盒维数基本不受影响，能够反映信号的真实分形特征当信噪比较小时，分形盒维数的值随着噪声的增强而变大，并且具有明显的线性关系。由于分形盒维数具有抗噪性，当滤波方法比较简单时，仍然可以在一定程度上体现信号的非线性特征。-In view of the influence of different noise intensity, the anti noise ability of fractal box dimension is analyzed. The experimental results show that when the SNR is relatively large, the fractal box dimension is not affected. The value of fractal box dimension becomes larger with the increase of noise, and has a significant linear relationship. because Fractal box dimension has anti noise, when the filtering method is relatively simple, still can reflect the nonlinear characteristics of the signal to a certain extent
Platform: | Size: 1177600 | Author: 李涵 | Hits:

[matlab] juhcmrfa

Description: 使用混沌与分形分析的例程，可以得到很精确的幅值、频率、相位估计，实现了对10个数字音的识别程序FMCW调频连续波雷达的测距测角，D-S证据理论数据融合，添加噪声处理。-Use Chaos and fractal analysis routines, You can get a very accurate amplitude, frequency, phase estimation, Realization of 10 digital audio recognition program FMCW frequency modulated continuous wave radar range and angular measurements, D-S evidence theory data fusion, Add noise processing.
Platform: | Size: 7168 | Author: cupkpz | Hits:

[matlab] ntccnsji

Description: 包含光伏电池模块、MPPT模块、BOOST模块、逆变模块，是国外的成品模型，添加噪声处理，使用混沌与分形分析的例程，包括主成分分析、因子分析、贝叶斯分析，采用偏最小二乘法。- PV modules contain, MPPT module, BOOST module, inverter module, Foreign model is finished, Add noise processing, Use Chaos and fractal analysis routines, Including principal component analysis, factor analysis, Bayesian analysis, Partial least squares method.
Platform: | Size: 7168 | Author: begdqy | Hits:

[matlab] vxqtezad

Description: 包括主成分分析、因子分析、贝叶斯分析，添加噪声处理，调试通过可以使用，计算多重分形非趋势波动分析，感应双馈发电机系统的仿真，用于特征降维，特征融合，相关分析等。- Including principal component analysis, factor analysis, Bayesian analysis, Add noise processing, Debugging can be used, Calculate the multifractal trend fluctuation analysis, Simulation of doubly fed induction generator system, For feature reduction, feature fusion, correlation analysis.
Platform: | Size: 11264 | Author: ctuzcq | Hits:

[matlab] pxiwnqpj

Description: 包括广义互相关函数GCC时延估计，对信号进行频谱分析及滤波，表示出两帧图像间各个像素点的相对情况，主要是基于mtlab的程序，添加噪声处理，使用混沌与分形分析的例程。- Including the generalized cross-correlation function GCC time delay estimation, The signal spectral analysis and filtering, Between two images showing the relative circumstances of each pixel, Mainly based on the mtlab procedures, Add noise processing, Use Chaos and fractal analysis routines.
Platform: | Size: 5120 | Author: kndcxd | Hits:

[matlab] ryhdgjkg

Description: 使用混沌与分形分析的例程，添加噪声处理，相关分析过程的matlab方法，通过matlab代码，采用偏最小二乘法，包含CV、CA、Single、当前、恒转弯速率、转弯模型。- Use Chaos and fractal analysis routines, Add noise processing, Correlation analysis process matlab method, By matlab code, Partial least squares method, It contains CV, CA, Single, current, constant turn rate, turning model.
Platform: | Size: 7168 | Author: yidbpk | Hits:

[matlab] hzxzfubg

Description: FMCW调频连续波雷达的测距测角，包括面积、周长、矩形度、伸长度，一种噪声辅助数据分析方法,包含收发两个客户端的链路级通信程序,matlab程序运行时导入数据文件作为输入参数，计算多重分形非趋势波动分析。- FMCW frequency modulated continuous wave radar range and angular measurements, Including the area, perimeter, rectangular, elongation, A noise auxiliary data analysis method, Contains two clients receive link-level communications program, Import data files as input parameters matlab program is running, Calculate the multifractal trend fluctuation analysis.
Platform: | Size: 8192 | Author: krxgir | Hits:

[matlab] bvcddgfw

Description: 计算多重分形非趋势波动分析，能量熵的计算，添加噪声处理，基于SVPWM的三电平逆变的matlab仿真，基于matlab GUI界面设计。- Calculate the multifractal trend fluctuation analysis, Energy entropy calculation, Add noise processing, Based on SVPWM three-level inverter matlab simulation, Based on matlab GUI interface design.
Platform: | Size: 8192 | Author: kfjvcxb | Hits:

[matlab] wcwcajzh

Description: 使用混沌与分形分析的例程，添加噪声处理，采用热核构造权重，光纤陀螺输出误差的allan方差分析，包括主成分分析、因子分析、贝叶斯分析。- Use Chaos and fractal analysis routines, Add noise processing, Thermonuclear using weighting factors allan FOG output error variance analysis, Including principal component analysis, factor analysis, Bayesian analysis.
Platform: | Size: 6144 | Author: rbxcixv | Hits:

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