spectrum-stimation

彩色图像转灰度图像的三种算法，matlab实现(Color image to grayscale image of the three algorithms, matlab implementation)

按照《双色球EXCEL全攻略》用matlab重写的双色球统计程序。(A lottery Predicting program developed with matlab.)

model induction motor

matlab环境下的时频分析，有仿真结果，有程序，希望对初学者有用(matlab Frequency-time analysis)

说明：  此文件为模理退火的matlab源代码,适合参加数学建模的同学使用(This document is the rationale for the mode of annealing matlab source code, suitable for students to participate in the use of mathematical modeling)

说明：  Description : This package includes a configurable Simulink model for three different types of DC-DC converters (Buck, Boost and Buck-Boost converters) with a PWM PI controller. The example provided shows a case to boost voltage 5 volts to 25 volts. It can be used to learn DC-DC converters and their control. The model itself also provides an example how to mask a subsystem in Simulink. A HTML and a pdf files are provided to explain the principles of the unform Simulink model for three different types of DC-DC converters. The model does not require other Simulink blocks, such as SimPowerSystems.

本程序提供了两种Poincare曲线的程序源代码，并针对单摆转子系统进行了绘制。(This program provides two kinds of Poincare curve program source code, and for the simple pendulum rotor system has been drawn.)

说明：  此程序为语音信号的过零率检测，白噪声过零率远远高于语音信号，故可通过对过零率的检测判断出是不是语音信号。(This procedure for the zero rate of speech signal detection, white noise zero crossing rate is much higher than the speech signal, it can zero rate by detection of voice signal is not judged.)

调用摄像头，人脸识别matlab代码，利用人脸皮肤与北京差异进行识别。(Call camera, face recognition matlab code, the use of facial skin with Beijing differences identified.)

this file which i get for kth nearest neigbour