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对图像进行DCT正反变换，可以在matlab里面观察正变换后的数据，达到数据压缩。(DCT pros and transform the image in matlab which observed data is transformed to achieve data compression.)

运用FFT技术来综合和分析电话拨号的过程，matlab来分解了这一过程，希望能提供帮助( TOUCHTONE Use FFT to synthesize and analyze telephone dialing The dual tone multi-frequency (DTMF) standard specifies that the tone generated by a button on a telephone key pad is the sum of two sinusoids, with frequencies determined by the button s row and column. The dial pad on the upper left allows you to select buttons and generate the corresponding tones. The signal plotted on the upper right is a recording of the FAX number for the MathWorks being dialed. You can replay the entire signal, or select individual segments. The power plot is the magnitude of the FFT of the signal being played. What is the MathWorks FAX number?)

this program finds the number of zero crossings in a given signal.

用matlab实现广义最小二乘的数值运算，欢迎大家参考。(Achieve numerical computation of generalized least squares)

上传一个多输入多输出的状态空间方程的预测控制程序，采样三输入双输出。仿真结果能得到期望的设定值.(Upload predictive control program a multi-input multi-output state space equations, three-input dual-output sampling. The simulation results can be obtained the desired setpoint.)

书籍《MATLAB应用程序接口用户指南》主要介绍了matlab与c、c++、fortran等程序的混合编程以及matlab网络化编程知识(Books " MATLAB Application Program Interface User' s Guide" introduces the matlab and c, c++, fortran other procedures matlab mixed programming and network programming knowledge)

说明：  根据经典光学光折射理论，模拟光在界面上的折射，(According to the classical theory of optical light refraction to simulate the refraction of light at the interface,)

design UKF for a low cost INS/GPS with magnetometr

说明：  色散分析，有助于需要色散分析的人员参考使用，需要参数为入射角，角频率、传播常数(Dispersion analysis is helpful for people who need dispersion analysis to refer to. It needs parameters such as incident angle, angular frequency and propagation constant.)

1．用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图 2．进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选 3．做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱 4．用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图(1. Produce sine wave, square wave, and the white noise signal with Matlab, and their time-domain waveform display 2. FFT transform, display each spectrum, where the sampling rate, frequency, length optional data 3. RMS to make maps of the three signals, power spectrum, as well as the number of RMS map 4. Restored by inverse Fourier transform IFFT signal and displays the time domain waveforms sinusoidal signal recovery)