VoiceEnhance

倒立摆控制系统虽然作为热门研究课题之一，但见于资料上的大多采用现代控制方法，本课题的目的就是要用经典的方法对单级倒立摆设计控制器进行探索。(Although the inverted pendulum control system as one of hot research topics, but in most of the information on the use of modern control methods, the purpose of this subject is to use the classic method of single-stage inverted pendulum controller design exploration.)

GM（1，1）模型，Matlab程序。只需要将已知数据输入给x0，就可以计算灰色模型的各个参数，还可以选择预测未来点的个数。(GM (1,1) model, Matlab program. Simply known data input to x0, we can calculate the various parameters of gray model, you can also choose to predict the number of future points.)

Gram-Schmidt正交化程序，利用pascal函数来产生一个矩阵。(Gram-Schmidt is orthogonal program,Use of PASCAL function to produce a matrix. )

对于周期图的功率谱估计,当数据长度N太大时,谱曲线起伏加剧, 若N太小,谱的分辨率又不好,因此需要改进。两种改进的估计法是 平均周期图法和平滑平均周期图法。Bartlett法:Bartlett平均周期图 的方法是将N点的有限长序列x(n)分段求周期图再平均。(For the power spectrum estimation of the periodogram, when the data length N is too large, the spectral curve fluctuation intensifies,   If N is too small, the spectral resolution is not good, so need to be improved. The two improved estimates are   Average Period Graph and Smooth Mean Period Graph. Bartlett method: Bartlett average cycle chart   Is to re-average the finite-length sequence x (n) of N points by periodogram.)

dtmf的matlab实现.包含理论分析.适合初学者.(DTMF to achieve the matlab. contains theoretical analysis. suitable for beginners.)

用于时间序列ARMA模型定阶程序,效果还可以，供大家参考！(a program for Time Series ARMA model order determination)

心电信号低通滤波器、高通滤波器、带阻滤波器、以及QRS波检测(ECG low pass filter and high pass filters, band stop filter, and the QRS wave detection)

说明：  matlab数学公式的汇总，可以解决编程时数学公式的问题(matlab summary of mathematical formulas, mathematical formula to solve programming problems)

static partial buffer sharing code (SPBS QUEUE)

duffing方程的混沌判别中使用到了庞加莱截面，即多维相空间中适当选取一截面 ，此截面不与轨线相切，不包含轨线，且便于观察系统的运动特征变化.(use Poincare chaotic duffing equation discriminant, multi-dimensional phase space appropriate to select a cross-section, this section is not tangent to the trajectory does not contain the rail line, and easy motion characteristics of the observed system changes.)