appcr1

his is a simple method for silence removal and segmentation of audio streams that contain speech. The method is based in two simple audio features (signal energy and spectral centroid). As long as the feature sequences are extracted, as thresholding approach is applied on those sequence, in order to detect the speech segment

主动控制悬架4自由度模型及控制算法，可以马上应用。(Active Control of 4-DOF suspension model and control algorithm can be applied immediately.)

说明：  matlab在规划问题方面的例程代码及讲义(matlab routine issues in the planning code and notes)

利用 Poisson 方程求解热平衡下 PN结的电势分布 (Poisson matlab PN)

数值计算matlab例程，用RK4算法求解Lorenz方程，验证蝴蝶效应(RK4，Lorenz Equation)

旋转不变子空间类算法是空间谱估计中的典型算法，它也是特征分解类算法(Rotation-invariant subspace type algorithm is the space of a typical spectral estimation algorithm, it is also eigen-decomposition algorithm)

Convolution without using conv function

混合罚函数法，结合了外罚函数法和内罚函数法的有点，适用于matlab程序(Mixed penalty function method, a combination of external and internal penalty function method a little penalty function method for matlab program)

点目标得SAR BP算法成像，具体说明见程序~(Point target is imaged by SAR BP algorithm. See the program for details.)

二维功率谱密度换算一维功率谱密度的程序,对表面质量的计算尤为使用(two dimensional power spectral density to one dimensional psd)