speedreducer

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.)

OFDM系统完美仿真绝对可用包含星座图，时域频域仿真及传输函数(OFDM system is absolutely perfect simulation can include constellation, time domain simulation and frequency domain transfer function)

function [mubnd,var,dc,dr,gcr,grc] = bub(m,blk,Dinitbnd,Ginitbnd,pmu,diagnose,clevel)

Matthew J.Beal的变分贝叶斯理论在隐马尔可夫模型中的应用程序。多加了个转换程序。(VBEM of Matthew J.Beal to HMM.)

采用四种埪制律进行单神经元PID控制，即无监督的Hebb学习规则；有监督的Delta学习规则；有监督的Hebb学习规则；改进的Hebb学习规则。(Kong legal system of four single-neuron PID control, the Hebb learning rule is unsupervised a supervised learning rule Delta a supervised Hebb learning rule modified Hebb learning rule.)

HHT源代码 做时频分析的同志们可以看一下 相当经典的例子(HHT time-frequency analysis of the source code to do the comrades can look very classic example of)

陈阳泉教授以及其他学者的有关分数阶PID方面的 论文；经典值得学习，与大家共享；仿真以Matlab为主(Papers Fractional PID aspects related to Professor Chen Yangquan and other scholars classic worth learning, shared with everyone simulation in Matlab-based)

matlab学习资料，包括数学计算中的矩阵计算和图像处理等，用于matlab初学者。(matlab learning materials, including the mathematical calculations of matrix calculation and image processing for matlab beginners.)

有限元差分解偏微分方程的函数,能设置初值，边界值(Difference solution of partial differential equations finite element function can set the initial value, boundary value)

异步电动机数量控制完整仿真模型，可以根据实际情况写该参数，达到研究者所需要的情形(The number of complete induction motor control simulation model, the parameter can be written according to the actual situation, the researchers needed to achieve the situation)