PN_synchronization_simlulink

传热计算实例，瞬态导热中的一个很小的问题。本科生运用matlab做的算例。(transcient conduction heat transfer in 2 dimentions, for undergraduate students only. produced in 2007.copyright reserved by xxhe.)

求PI的值，根据莱布尼茨公式求PI，PI=4*（1-1/3+1/5-1/7+1/9-1/11+……(PI uated, find PI, PI= 4* (1-1/3+1/5-1/7+1/9-1/11+ Leibniz formula based on ......)

说明：  双音频按键识别 背景： 打电话拨号时，每次按键会发出不同的声音，这些声音实际上是由一些固定频率的正弦信号合成的。因为每个按键声音包含两个不同频率的正弦信号，因此也被称为“双音频”信号，简记为DTMF。这相当于是对不同键位用‘音频’进行了编码，如同计算机领域中用数字0和1对处理对象（包括键盘）进行编码。(Two-tone buttons identify Background: When you call dial, each key emits different sounds, which is actually made up of some fixed frequency sinusoidal signal synthesis. Because the sound of each key contains two sinusoidal signals of different frequencies, it is also known as &quot two-tone&quot signal, abbreviated as DTMF. This is equivalent to different keys using the ' audio' encoded, as the computer industry with the numbers 0 and 1 pair of processing object (including the keyboard) to be encoded.)

Optimum array processing 最优阵列处理技术 第十章 MATLAB程序 DOA MUSIC ESPRIT(Optimum array processing DOA MUSIC ESPRIT)

关于语音处理系统的程序，主要讲述了在matlab环境下进行语音信号处理所需要的源程序代码(Program on the voice processing system, mainly about the source code needed to speech signal processing in Matlab environment)

语音识别matlab源代码，包括预处理、特征提取、训练识别(Speech recognition matlab source code)

电力系统配电网树状网的潮流计算，附有有PDF的程序源码文档说明 (Power system with grid power flow calculation of the tree network, attached to the PDF program source code documentation)

参加数学建模大赛获奖，提供图像的拼接的matlab源代码，有很大价值(Participate in mathematical modeling contest winners, providing an image stitching matlab source code, there is great value)

lda face recgnition...............matlab

its great to share codes because am watching how interesting it is