mail

CDMA and OFDM codes for MATLAB v5 and v6

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 )

对信号进行时域特征提取，个人已使用，感觉很不错！(The time domain feature extraction of the signal, the individual has been used, I feel very good!)

贝叶斯滤波器设计的MATLAB程序，源码。(MATLAB Bayesian filter design process, the source code.)

时间规整函数，从Matlab修改过来，在XP环境下调试成功(Time warping function, changes come from the Matlab, in the XP environment to debug the success of)

说明：  实现人脸检测的功能，对合适大小的图像，将其放在相应的matlab文件夹下即可自动进行人脸检测并定位。(For face detection function, the size of the image on the right, put it in the appropriate folder automatically matlab for face detection and localization.)

First use EEMD to decompose the original singal to get IMFS,then use FFT to analyse the each IMF,combine EEMD with FFT to get clearer analytic results.

this is serialATA 2.6 spec,the most popular spec of HDD(serialATA 2.6)

ulcd is a rgb color display lcd displa with touch secreen

计算两个声音信号的延时.两个信号不必完全相同，但是要非常类似(Two sound signals calculated delay signal having two identical, but very similar to)