PDE-programs-matlab

这个是我数字信号处理这门课的课程设计,文件包括用matlab编写的代码和设计报告.这个设计包括卷积演示程序、采样定理演示程序、模拟滤波器设计演示程序、设计切比雪夫I型低通滤波器、切比雪夫I型低通滤波器、双线性变换法设计巴特沃斯低通数字滤波器、用凯塞窗设计高通滤波器.(This is my digital signal processing the course of the curriculum design, preparation of documents including the use of matlab code and design report. Convolution demonstration of this design include the procedures, sampling theorem demo program, analog filter design demo program, design Chebyshev-I low-pass filter, Chebyshev type I low-pass filter, bilinear transform design Butterworth low-pass digital filter with Kaiser window design high-pass filter.)

说明：  一个MATLAB程序，附有数据和详细计算过程，自回归模型到分析过程，下载看看就知道了(A MATLAB program, with data and detailed calculation process, since the regression model to the analysis process, download to see if the know)

DC to DC buck converter, with control loopDC to DC buck converter, with control loopDC to DC buck converter, with control loopDC to DC buck converter, with control loop

matlab实现的推荐系统，融合机器学习的方法，出自斯坦福大学吴恩达(matlab implementation of recommendation system, the integration of machine learning methods, from Stanford University, Wu Enda)

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.)

This function allow to plot a series of points represented in omogeneous coordinates or euclidean ones

Practical FIR Filter Design in MATLAB Revision 1.1 Ricardo A. Losada The MathWorks, Inc. 3 Apple Hill Dr. Natick, MA 01760, USA January 12, 2004

说明：  协作通信的权威，美国南加州大学，维特比工程学院Prof.Gerhard Kramer的经典著作，系统的讲述协作通信的原理及应用(Authority collaboration communication, University of Southern California, Viterbi School of Engineering Prof.Gerhard Kramer' s classic, tells the system principle and application of collaborative communication)

说明：  Train speed/time moving wheel load

BP neural network trained by PSO algorithm