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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 )

This PPT is an introduction to matlab programing

此文档涵盖了Matlab初学者和有一定基础的学者，在编程过程中遇到的指令方面的集合。(This document covers the Matlab have a certain foundation for beginners and scholars, in the programming process encountered in a collection of directives.)

自己编写的平坦因子理论以及信息熵的程序，可用于学习和交流(I have written a flat factor theory, and entropy procedure can be used for learning and communication)

fastica valogorithme for bss

SIMULINK中搭建了光伏发电电池模型，对不同的光照和温度产生不同的功率(SIMULINK to build the model of the photovoltaic cells produce different power for different light and temperature)

该程序是我的一个小作业，它是用matlab来仿真一个实际的问题，对于matlab的初学者来说有一定的帮助(The program is one of my little job, which is used matlab to simulate a real problem, for matlab beginners who have some help)

TSP问题（货郎担问题，旅行商问题）的模拟退火算法通用malab源程序(The TSP (traveling salesman problem, traveling salesman problem) simulated annealing algorithm generic malab source)

这是用来进行数据包络分析的matlab代码。 这是用来进行数据包络分析的matlab代码。(This is used for data envelopment analysis matlab code. This is used for data envelopment analysis matlab code.)

对从金属棒材中提取的超声缺陷信号经过自适应滤波以后的极坐标显示图(polar graph of ultrasonic defect signal)