Matlab-time-frequency-anlysis-code

GTRACK Track mouse position and show coordinates in figure title. Once GTRACK is active the mouse position is constantly tracked and printed on the current figure title. A left-click will print the coordinates in the command line and store them. Clicking the mouse right button deactivates GTRACK.

注水算法，对初学者很有用。欢迎下载(Injection algorithm, useful for beginners. Welcome to download)

分形样条和小波的源程序,使用matlab代码(Fractal spline and wavelet source, the use of matlab code)

matlab和切比雪夫，里面有很多曲线拟合(matlab)

说明：  《数字图像处理与机器视觉:Visual C++与Matlab实现》6 支持向量机,综合案例——基于PCA和SVM的人脸识别系统(&quot Digital image processing and machine vision: Visual C++ and Matlab to achieve&quot 6 support vector machines, comprehensive case- based on PCA and SVM for Face Recognition System)

Record your voice for 5 seconds Play back the recording Store data in double-precision array Plot the waveform Calculate over all the frames in the sample LPF the speech at 900 Hz to remove upper freq. (since Pitch info. will be below 900 Hz) Perform Centre Clipping and find the Clipping Level (CL) Choose the appropriate clipping level Perform Center clipping Compute the autocorrelation calcute pitch Calculate the avg. pitch estimate for the whole sample X. Find Gender

本程序利用matlab实现利用压缩感知进行波达方向估计(This procedure using matlab to achieve the use of compressed sensing for DOA estimated)

数字信号的传输方式分为基带传输和带通传输，在实际应用中，大多数信道具有带通特性而不能直接传输基带信号。为了使数字信号在带通信道中传输，必须使用数字基带信号对载波进行调制，以使信号与信道的特性相匹配。这种用数字基带信号控制载波，把数字基带信号变换为数字带通信号的过程称为数字调制。通常使用键控法来实现数字调制，比如对载波的振幅、频率和相位进行键控。(Transmission of digital signals into base band transmission and band-pass transmission, in practice, most of the channel with band-pass characteristics can not directly transmit base-band signal. In order to make the digital signal is transmitted with a communication channel, you must use the digital baseband signal to modulate the carrier to make the signal to match the characteristics of the channel. The digital baseband signal control with a carrier, the digital baseband signal conversion to digital bandpass signal is called digital modulation. Keying method is commonly used digital modulation, such as on the carrier' s amplitude, frequency and phase shift keying.)

对于模式识别中的k均值（也称c均值）问题，给出了matlab实现。(pattern recognition for the k-means (also called c-means), is the realization of Matlab.)

BP算法程序，通过此程序可以很好的对两类模式进行分离。效果明显。(BP algorithm program can be very good through this process to separate two kinds of models. Effect is obvious.)