codes

Calculating IIR filter coefficients of 2nd Order IIR Filter

说明：  简单的音调识别系统，能够识别出钢琴弹奏出的音符/(Simple speech recognition system based on Matlab can get the final result through sample training.)

自己编写的短时傅里叶变换（STFT）程序，短时傅里叶变换可以获得非平稳信号的时频图，主要原理是用滑窗截取一段信号，认为这一段时间内信号是平稳的，对其进行fft变换获得频谱(I have written a short time Fourier transform (STFT) program, short-time Fourier transform can be obtained non-stationary signal frequency diagram, the main principle is the interception of a signal with a sliding window that within this period of time the signal is stationary, access to spectrum fft transform them)

matlab programm for kmean and fuzzy cmean clustering.

车牌识别例子，比较简单易懂，matlab2007b版本运行(License plate recognition example, relatively simple to understand)

混沌粒子群算法理论文献，比较全面的概括了这一算法(Chaotic particle swarm theory literature, a more comprehensive overview of this algorithm)

make a transversal channel take a three tap chanel [1,1/4 1/2] and data generate by BPSK(1 or -1)(make a transversal channel take a three tap chanel [1,1/4 1/2] and data generate by BPSK(1 or-1))

matlab最常用，最实用的程序代码，初学者必须要掌握的。重要！！！(matlab most commonly used and most useful code, beginners need to master. Important! ! !)

说明：  高速数据传输解调关键技术研究，大家可以好好学习一下(Modem high-speed data transfer key technologies, we can learn about)

说明：  Matlab图像处理工具手册,介绍一些MATLAB 图像处理命令(Matlab image processing toolkit to introduce some MATLAB image processing commands)