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利用MATLAB中的小波信号对语音信号的基音提取(The use of MATLAB Wavelet signal for pitch extraction of speech signals)

it is a m-file to calculate adjoint of a matrix

The recognition of noise as a source of annoyance began in antiquity, but therelationship, sometimes subtle, that may exist between noise and money seems to be a development of more recent times. For example, the manager of a large wind tunnel once told one of the authors that in the evening he liked to hear, from the back porch of his home, the steady hum of his machine 2 km away, for to him the hum meant money. However, to his neighbours it meant only annoyance and he eventually had to do without his evening pleasure.

读入一段数据后，计算有效信号的初至、持时及能量等属性，并作出事件属性判断。(Data into a period of time after the initial calculation of the effective signal to hold the time and energy, such as attributes, and attribute the incident to determine.)

matlab在数学建模上的应用，包含数学建模常用算法以及历年建模题的代码(matlab application of mathematical modeling, including mathematical modeling commonly used algorithms and code for the theme of the calendar year modeling)

MATLAB是矩阵实验室（Matrix Laboratory）的简称，是美国MathWorks公司出品的商业数学软件，用于算法开发、数据可视化、数据分析以及数值计算的高级技术计算语言和交互式环境，主要包括MATLAB和Simulink两大部分。 (MATLAB is a matrix laboratory (Matrix Laboratory) for short, is a U.S. company produced a commercial mathematics MathWorks software for algorithm development, data visualization, data analysis and numerical calculation of the senior technical computing language and interactive environment, including MATLAB and Simulink two parts.)

中心逼近式改进灰色模型滑坡形变预测预报代码，自己写的，带有详细的解释(Center approach to improve the gray model of landslide deformation forecasting code, wrote it myself, with a detailed explanation)

turbo码的编码与译码，交织器 coding and decoding of turbo, interleaver(coding and decoding of turbo, interleaver, almost regular permutation)

matlab的一些图像处理的例子和讲解，适合习惯于用matlab画图的人使用(something about matlab)

algo de fourier para entretenerse