yqentification-Matlab

专门介绍利用matlab软件进行时间-频率分析的电子书，希望对大家有帮助(Devoted to using matlab software for time- frequency analysis of the e-book, and I hope all of you to help)

此程序代码是用matlab编写的无网格伽辽金方法源程序(This code is to use matlab meshless galerkin method source program)

数字图像处理，dct频谱，低通滤波，高通滤波之后的图像。(Digital image processing, DCT spectrum, low pass filtering, high-pass filtering after the image.)

说明：  波束赋形算法的仿真程序，多输入多输出系统。(The simulation program of beamforming algorithm, MIMO system.)

这是基本的粒子群算法，里面还附有一个常用的测试函数。(This is the basic particle swarm algorithm, which is also accompanied by a commonly used test functions.)

Abstract—Several algorithms have been developed for tracking formant frequency trajectories of speech signals, however most of these algorithms are either not robust in real-life noise environments or are not suitable for real-time implementation. The algorithm presented in this paper obtains formant frequency estimates voiced segments of continuous speech by using a time-varying adaptive filterbank to track individual formant frequencies. The formant tracker incorporates an adaptive voicing detector and a gender detector for formant extraction continuous speech, for both male and female speakers. The algorithm has a low signal delay and provides smooth and accurate estimates for the first four formant frequencies at moderate and high signal-to-noise ratios. Thorough testing of the algorithm has shown that it is robust over a wide range of signal-to-noise ratios for various types of background noises.

以正弦载波的形式实现QPSK的调制解调、程序中附有详细的注释，并显示调制过程中各个阶段的结果图，经仿真验证程序正确，极力推荐下载(QPSK modulation and demodulation is realized in the form of sinusoidal carrier. Detailed annotations are attached to the program, and the results of each stage in the modulation process are displayed. The simulation results show that the program is correct and download is highly recommended.)

matlab实例程序百例3 matlab实例(Examples of procedures for 100 cases of matlab examples 3matlab)

PMd in optical fiber

小波分析用于FSK信号的频率检测，非常好用的！(Wavelet analysis of the frequency of detection for the FSK signal, very nice!)