area_of_zhihui

good work on Pole placement method

说明：  自抗扰控制控制算法仿真举例，具体是一个二阶系统的adrc仿真，以及ESO和adrc的bode图程序。(Examples of adrc control algorithm simulation are adrc simulation of a second-order system, and bode diagram programs of ESO and ADRC.)

一些关于matlab的书，，，很有用的，，(Some of the book about matlab,,, very useful,)

说明：  matlab 数字信号处理工具箱 含有非常完整的信号处理函数(signal_processing)

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 )

Combination of Forecasting Using Modified GMDH and Genetic Algorithm

Input: X, training data, dim*num Y, training data labels, num*class para.alpha, para.beta, regularization parameters para.rd, reduced dimensionality Web Image Annotation via Subspace-Sparsity Collaborated Feature Selection. Zhigang Ma, Feiping Nie, Yi Yang, Jasper Uijlings, and Nicu Sebe. IEEE Transactions on Multimedia (TMM) 14(4):1021-1030, 2012.

Orthogonal Matching Pursuit

用MATLAB仿真，实现香农编码的仿真。得到香农码。(Using MATLAB simulation, the simulation codes to achieve Shannon. By Shannon code.)

频率估计的根MUSIC方法.y ->数据向量 n -> 模型阶数 m -> 矩阵阶数 w <- 频率谱估计(The Root MUSIC method for frequency estimation.)