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this is the matlab code for pcm "pulse code modulation"

基于混沌理论构建的信号检测系统具有敏感微弱周期信号和对噪声有强免疫力的特点,用于微弱信号检测领 域优势明显。实验室内研究需要产生包括混沌噪声在内的各种噪声,并叠加微弱周期信号作为微弱信号检测系统的信号 源。介绍一种基于LabVIEW平台并结合Matlab计算模块的混沌噪声发生器,可产生典型的3种混沌噪声:Logistic,Duff2 ing,Lorenz形式。该发生器将LabV IEW易于接口实现和Matlab计算精度高、编程简捷的特点相结合,具有结构清晰、通用 性强、易于实现、使用方便的特点。 (Built based on chaos theory, sensitive signal detection system with weak periodic signal and has a strong immunity to noise characteristics of the area for weak signal detection have obvious advantages. Laboratory studies need to generate, including noise, chaos, including a variety of noise and superimposed weak periodic signal as a weak signal detection system, signal source. Introduction of a platform based on LabVIEW and Matlab calculation module with the chaotic noise generator can produce the typical three kinds of chaotic noise: Logistic, Duff2 ing, Lorenz form. The generator will be LabV IEW easy interface, and Matlab calculation of high accuracy, simple programming features combined with a clear structure and versatility, easy to implement, easy to use features.)

BP神经网络等多种算法预测高铁站客运量，程序下载可直接运行。(BP neural network and other algorithms predict high-speed rail station passenger volume, program downloading can be directly run.)

THIS CODE REMOVES "SALT AND PEPPER NOISE" BY AVERAGING.MAY HELP BEGINNERS TO UNDERSTAND THE COLOR PICTURE AND REMOVING THE NOISE IN GREY IMAGE OUTPUT OF GIVEN COLOR IMAGE.

说明：  精通matlab C++混合编程，希望对大家有用(Proficient in matlab c++ mixed programming)

vad（语音活动检测）的matlab代码，采用频域的方法计算信噪比。(vad (voice activity detection) Matlab code, using frequency-domain approach to calculate the signal-to-noise ratio.)

说明：  包括灰度AGV路径识别，彩色AGV路径识别，HSI彩色空间的AGV路径识别，：路径中心线的定位，Radon变换的AGV路径偏差检测(AGV path identification, including gray, color AGV path identification, HSI color space AGV path identification,: path centerline position, Radon transform of the AGV path deviation detection)

说明：  采用聚类的方法对路标进行提取，效果不错。(The method of clustering is used to extract road signs, and the effect is good.)

matlab 医院人数统计 可以计算一段时间 人数(matlab tong ji ren shu )

采用加窗法在matlab中进行功率谱密度计算(Windows and method for power spectral density calculation in matlab)