CH26

说明：  用于进行变量降维的matlab程序，大家可以试一试，很有效哟(Variable Reduction Testbench MATLAB modules，it is very effective， we can try, very effective ..............)

说明：  利用Matlab仿真脉冲编码调制（PCM）及A律、μ律PCM对声音进行压缩编解码过程。 脉冲编码调制（PCM，Pulse Code Modulation）是一种将模拟语音信号转换成数字信号的编码方式。波形编码器的作用是对采样后的信号样本进行量化和编码。从数学上来看，量化过程就是把一个连续幅度值的无限数集合映射成一个离散幅度值的有限数集合，编码就是用一组二进制数来表示这些映射后的有限数。国际标准化的PCM采用折叠二进制码，符合长途电话质量。根据量化方法的不同，PCM可分为均匀量化PCM和对数PCM两大类，对数PCM中，2Aμ律和律编码都已被定为国际标准。(Matlab simulation using pulse code modulation (PCM) and the A law, μ law PCM codec for voice compression process. Pulse Code Modulation (PCM, Pulse Code Modulation) is an analog voice signal into digital signal encoding. The role of the encoder waveform is sampled signal sample quantization and coding. From the mathematical point of view, the process is to quantify the magnitude of the value of a continuous set of infinite number of maps into a finite number of discrete set of amplitude values​ ​ , encoding is to use a set of binary digits, said after a limited number of these maps. By folding the International Standardization of PCM binary code, in line with long-distance telephone quality. According to the different quantitative methods, PCM can be divided into uniform quantization PCM PCM and the number of two categories, on the number of PCM in, 2Aμ law and legal codes have been designated as international standards.)

使用Matlab访问excel的程序包。(Using this Program Matlab access Microsoft Office Excel.)

fuzzy applied local statistic filter

针对滚动轴承全寿命周期试验数据，采用滑动平均法对原始信号平滑后求其时域特征图，可用于轴承性能退化评估的研究(Experimental data for the entire life cycle of rolling bearings, using the moving average method to study after the original time-domain signal smoothing seeking the feature map, can be used for bearing performance degradation assessment)

basic model of solar power

管理员您好，这是最新的期刊论文，学生初学软件，没有比较高深的程序源代码，希望您能满意(Administrator hello, this is the latest journal papers, students begin to learn the software, there is no more profound source code, I hope you enjoy)

It is about soving sparse solution from linear system, simpel and fast.

计算两个日期的和或差，以及计算一个日期和一个天数的和或差，(Calculate two dates and or poor, and to calculate a date and a number of days and or poor,)

冈萨雷斯数字图像处理matlab版源码DIPUM Toolbax V1.1.3，对冈萨雷斯书的很好的补充(Gonzalez Digital Image Processing matlab source code version of DIPUM Toolbax V1.1.3, a good book for Gonzales complement)