ECGsignals

标准粒子群算法，应用领域广阔，收敛快计算精度高(Standard particle swarm algorithm, broader applications, fast convergence and high precision )

非线性拟合，可以根据已经数据，计算出对应的数据(Nonlinear fitting, can have data to calculate the corresponding data)

该工具箱为时频分析中的一类重要变换,离散时频分布的工具箱,其中提供基本算法的程序.可直接应用(the Toolbox too frequency analysis of a kind of important transformation, discrete time-frequency distribution of the toolkit, providing basic arithmetic procedures. can be directly applied)

使用Matlab做图像平滑，方便、简单，效果好(image smooth)

A custom view for an item in the contact list.

故障诊断方面的。在电力传输线上的。讲解详细，逻辑性强，有利于仿真创新(Fault diagnostics. In the power transmission line. Explain in detail, logical, beneficial simulation innovation)

使用MatLab绘制直角坐标系,以便于更加快捷地画图。很实用。(MatLab)

To solve an initial value problem, say, equation y = dsolve( Dy = y*x , x ) with y(1) = 1, use of calculus of vaiation

耳蜗实质上相当于一个滤波器组，耳蜗的滤波作用是在对数频率尺度上进行的，在1000HZ下，人耳的感知能力与频率成线性关系；而在1000HZ以上，人耳的感知能力与频率不构成线性关系，而更偏向于对数关系，这就使得人耳对低频信号比高频信号更敏感。Mel频率的提出是为了方便人耳对不同频率语音的感知特性的研究。频率与Mel频率的转换公式为(Cochlear substantially equivalent to a filter set, cochlear filter is used on logarithm frequency scale, under the 1000 hz, the perception of the human ear and a linear relationship with frequency In more than 1000 hz, the perception of the human ear does not constitute a linear relationship with frequency, and prefer to logarithmic relationship, which makes the human ear is sensitive to low frequency signal is better than high frequency signal. Mel frequency is put forward in order to facilitate the ear of the study of speech perception characteristics of different frequency. For frequency and Mel frequency conversion formula )

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