viewfactor12

DTMF(双音多频)是用两个特定的单音频组合信号来代表数字信号的一种编码技术。两个单音的频率不同，代表的数字或实现的功能也不同。可采用8种频率代表电话机上的16个按键，10个数字键0~9和6个功能键*、#、A、B、C、D。具体的频率组合见参考书。要求： (1) 根据键盘输入的符号，利用MATLAB产生对应的DTMF信号；(2) 分别利用FFT算法和Goertzel算法计算该DTMF信号的频谱并画出频谱图；(3) 根据频谱图确定DTMF信号所代表的符号是否和输入的符号一致。 (DTMF (Dual Tone Multi-Frequency) is a single with two specific combination of audio signals to represent a kind of digital signal coding techniques. Two monosyllabic different frequency, on behalf of the numbers, or the realization of the functions are also different. Eight kinds of frequency of use on behalf of telephone on the 16 keys, 10 numeric keys 0 ~ 9 and 6 function keys*,#, A, B, C, D. The frequency of specific composition of reference books. Requirements: (1) According to the keyboard input of symbols, the use of MATLAB have a corresponding DTMF signal (2), respectively, using FFT algorithm and the Goertzel algorithm DTMF signal spectrum and frequency spectrum draw (3) According to DTMF signal frequency spectrum to determine represented by symbols and input symbols unanimously.)

说明：  倒立摆 Lqr控制，，有matlab仿真文件(Lqr inverted pendulum control, with matlab simulation file)

说明：  用于对声音信号进行处理，包括FFT变换，频谱估计等等！(Used for voice signal processing, including FFT transform, spectral estimation, and more!)

单自由度系统对初始条件和简谐激励相应 由单自由度的运动方程和初始条件得到二阶非齐次常微分方程，它的解有对应的齐次方程的通解和非齐次方程的特接构成。(Single degree of freedom system to initial conditions and the corresponding harmonic excitation Special general solution of the equations of motion and initial conditions by a single degree of freedom to get the second order non-homogeneous ordinary differential equations, its solution has a corresponding homogeneous equation and non-homogeneous equation then constituted.)

cvx工具箱，适用于windows 64位，官网还可下载其他版本，具体参考文件夹doc中pdf(cvx toolkit for windows 64 bit official website can also download other versions, with specific reference to the folder in pdf doc)

matlab与C语言的接口教程，能将matlab程序语言 直接转换为c语言，非常详细，千万不过错过，快点下吧！！！！(the interface of matlab with C language )

L曲线具有很多的优点，这是用MATLAB编写的病态方程的L曲线解决方法，可以通过L曲线确定所需的参数。(L curve has many advantages, it is written in MATLAB morbid equation L curve solution that will be needed through the L curve to determine the parameters.)

对BP网络进行介绍，可以使你对BP有大致的了解。(Description of the BP network can make you have a general understanding of the BP.)

This provided rar file is a 100 best utility codes of MATLAB is useful in many purpose,,mainly used to sumarized d large data base...............

基本操作，主要是matlab的一些基本操作，适合初学者学习(Basic operations, mainly some of the basic operations of matlab for beginners to learn)