work

现代信号处理中，几种经典算法的编程实现。(Modern signal processing, several classical programming algorithm.)

说明：  多信号模型在故障诊断中的应用Multi-signal model in fault diagnosis(Multi-signal model in fault diagnosis)

That is a program, about frequency and digital siglal processing. It is a .m file, that is developed for Matlab environment.

根据Erlang B公式进行程序设计： （1）输入：话务量、信道数；输出：PC （2）输入：PC、信道数；输出：最大话务量 根据Erlang C公式进行程序设计： （1）输入：话务量、信道数；输出：PW[延迟>0] （2）输入：PW[延迟>0]、信道数；输出：最大话务量 (According to Erlang B formula for program design: (1) Input: traffic, number of channels output: PC (2) input: PC, number of channels output: maximum traffic based on Erlang C formula for program design: (1) Input: traffic, number of channels output: PW [Delay> 0] (2) Input: PW [Delay> 0], the number of channels output: maximum traffic)

研究表明，构成K一L变换矩阵的向量也就是ToePhtz矩阵的特征向量。与此同时，离散 余弦变换矩阵逼近于ToePutz矩阵的特征向量矩阵，所以离散余弦变换矩阵与自然图像的 K一L变换矩阵十分相似。经过离散余弦变换后的变换系数块的协方差矩阵Cy非常接近对角 阵，即除了对角线元素以外，其它很多元素都近似为0，并且在左上角集中了主要能量。这 反映了自然图像大部分区域变化不大，亮度突变只占少数，即图像能量以低频成分为主的特 性。通过变换后的量化，舍弃对视觉效果影响较小的次要信息，可达到进一步的压缩效果。 虽然从去相关性能的意义上讲，DCT是一种次于K一L变换的准最佳变换，但是从算法实现的角度来看，DCT则远远优于K一L变换。首先，当图像的分块大小确定后，DCT的变换矩阵也就随之确定了，不随输入信号的统计特性变化而变化 其次，二维DCT能够分解成两次一维DCT，有利于硬件实现。 (Studies have shown that constitute a K L transformation matrix vector is ToePhtz eigenvector of the matrix. At the same time, discrete The cosine transform matrix approximation in ToePutz matrix eigenvector matrix, so the discrete cosine transform matrix and natural images Is very similar to a K L transformation matrix. After discrete cosine transform, the transform coefficient block of Cy is very close to the diagonal of covariance matrix Matrix, namely except diagonal elements, many other elements are approximate to 0, and focused the main energy in the upper left corner. this Reflects the natural images most area changed little, brightness mutations accounted for only a few, the energy is given priority to with low frequency components of image Sex. Through quantitative after transformation, abandoning smaller effect on the visual performance of secondary information, can achieve further compression effect. Although from related to the performance of the sense, DCT is a kind o)

Split & Merge Algorithm

关于turbo码网格计算的仿真程序，对网格图的简化计算提出了新的实现(Turbo codes on the grid computing simulation program, to simplify the calculation of the grid map proposed a new realization of)

something about physics

This is another source code for speech recognition.. this is the voice active detection using energy detection

（1）通过Simulink创建仿真模型；（2）配置相关RTW（Real-Time Workshop）参数；（3）通过RTW（Real-Time Workshop）自动生成C代码文件，并理解主要文件、接口函数和变量的意义；（4）在Visual C++中将生成的C代码作适当修改，编译运行并分析结果。((1) created by Simulink simulation model (2) configuration related to RTW (Real-Time Workshop) parameters (3) RTW (Real-Time Workshop) automatically generate C code files, and understand the main document, interface functions and variables significance (4) Visual C++ generated C code will be modified as appropriate, compile, run and analyze the results.)