order-demand-forecast

This is a paragraph on the calculation of current harmonic content of M documents, using MATLAB implementation, high accuracy.

this code is about ordfs and write whit matlab.

BPSK调制 通信原理中的类容 BPSK (BPSK modulation)

说明：  已知三个信号 ，经调制产生信号 ，其中 为常数， 为具有窄带特性的Hanning信号。将此已调信号通过信道传输，描述该信道的差分方程为 得到接收信号 1）分析Hanning信号 的时域与频域特性 2）分析已调信号 的时域与频域特性 3）分析系统的单位脉冲响应 4）分析接收信号 的频谱 (Three known signal, the modulated signal is generated, which is a constant for the Hanning signal having a narrowband characteristics. This modulated signal channels transmitted through the differential equation of the channel 2) units of analysis of the modulated signal and frequency domain characteristics 3) analysis system is described for obtaining a reception signal 1) Analysis of time domain and frequency domain characteristics Hanning signal 4 impulse response) spectral analysis of the received signal)

matlab绘图命令，对大家的matlab学习具有很大的帮助，新手必读(matlab drawing commands, matlab for everyone to learn a great help, the novice must read)

Matlab中提供了一种快速实现多项式拟合的方法函数polyfit()函数， 其格式：p=polyfit(x,y,n)其中x，y为样本向量，n为拟合的多项式的项数。下面拟f(x)=sinx+x,在区间【-3,3】上以0.5为间隔进行拟合。(Matlab provides a fast way to achieve polynomial fitting function polyfit () function, The format: p = polyfit (x, y, n) where x, y as the sample vector, n is the number of items of polynomial fitting. The following proposed f (x) = sinx+ x, the interval-3,3】 【intervals on the order of 0.5 to fit.)

基于MATLAB的振动信号的KAISER滤波与频谱分析,可用于加速度传感器信号(based on MATLAB KAISER vibration signal filtering and spectrum analysis, acceleration sensor can be used for signal)

研究表明超高斯分布更加贴近语音信号的实际分布，然而语音信号很难用单一的概率密度 函数准确描述，针对这一情况，提出了一种用超高斯混合模型对语音信号幅度谱建模的新方法，并推导了 基于此模型的幅度谱最小均方误差估的估计式。仿真结果表明：与传统的短时谱估计算法相比，该算法不 仅能够进一步提高增强语音的信噪比，而且可以有效减小增强语音的失真度，提高增强语音的主观感知 质量。 (Recent research indicates that the speech spectral amplitude distributions could be fairly described with super-Gaussian probability density function. However, the complexity of speech signal determines that the distribution statistics ofspeech signal could not be well described by single simple function. Thus a super-Gaussian mixture model for speech spectral amplitude is proposed, and with this model, a minimum mean-square error (MMSE) estimator for speech signals spectral amplitude is derived. The simulation results show that this algorithm based on Gaussian and super-Gaussian speech model could achieve better noise suppression and lower speech distortion as compared with the conventional short-time spectral amplitude estimation algorithm. )

暴强Dijkstra算法求任意两点间最短路径(matlab程序)，一种求最大流的程序(Floyd shortest path algorithm MATLAB program, graph theory algorithms very practical)

画箭头用的一个matlab程序，最新更新版(A matlab program for drawing arrowheads, the latest update)