linear_array_gui

MEX- Matalb executable helps is running c programs in matlab.

lda基本思想是选择使得Fisher准则函数达到极值的向量作为最佳投影方向，从而使得样本在该方向上投影后，达到最大的类间离散度和最小的类内离散度(Linear classification algorithm)

耳蜗实质上相当于一个滤波器组，耳蜗的滤波作用是在对数频率尺度上进行的，在1000HZ下，人耳的感知能力与频率成线性关系；而在1000HZ以上，人耳的感知能力与频率不构成线性关系，而更偏向于对数关系，这就使得人耳对低频信号比高频信号更敏感。Mel频率的提出是为了方便人耳对不同频率语音的感知特性的研究。频率与Mel频率的转换公式为(Cochlear substantially equivalent to a filter set, cochlear filter is used on logarithm frequency scale, under the 1000 hz, the perception of the human ear and a linear relationship with frequency In more than 1000 hz, the perception of the human ear does not constitute a linear relationship with frequency, and prefer to logarithmic relationship, which makes the human ear is sensitive to low frequency signal is better than high frequency signal. Mel frequency is put forward in order to facilitate the ear of the study of speech perception characteristics of different frequency. For frequency and Mel frequency conversion formula )

说明：  将时域信号进行处理得到加速度频域幅值谱或振级谱(Acceleration amplitude spectrum or magnitude spectrum in frequency domain can be obtained by processing time domain signals.)

利用Hu矩对26个英文字母进行提取和识别(Using Hu moments of the 26 English letters are extracted and recognized)

《数字信号处理：基于计算机的方法（第三版）》资源下载第一部分。 著者： （美）米特拉著 作译者： 孙洪等译 ISBN号： 7-121-02652-X 出版日期： 2006-06 出版社：电子工业出版社 内有书中事例所用的语音，图片和视频信号DEMO。()

说明：  最小外接矩形，根据面积和周长判断。实现图象处理的工程计算。( Compute the minimal bounding rectangle of points in the plane usage: [rectx,recty,area,perimeter] = minboundrect(x,y,metric) arguments: (input) x,y- vectors of points, describing points in the plane as (x,y) pairs. x and y must be the same lengths. metric- (OPTIONAL)- single letter character flag which denotes the use of minimal area or perimeter as the metric to be minimized. metric may be either a or p , capitalization is ignored. Any other contraction of area or perimeter is also accepted. DEFAULT: a ( area ) )

适合初学小波变换的同学，小程序演示了怎样显示小波各级各频段(show the frequency of wavelet)

自动控制理论中利用matlab编写二阶系统分别在欠阻尼，临界阻尼，过阻尼时的情况(Automatic control theory using matlab write second-order system in underdamped, critically damped, overdamped)

OFDM transmitter & receiver block implementation