Numerical-analysis-tutorial

用两种调制解调方法，即：FM、DSB对模拟输入信号进行调制与解调。(Modulation and demodulation of two methods, namely: FM, DSB of the analog input signal modulation and demodulation.)

说明：  可计算任意波形THD的小工具，非常方便；修改其输入波形即可得出结果(A tool for calculate THD)

说明：  这是蚂蚁算法求解TSP的源代码，Matlab中实现。(This is the ant algorithm for TSP source code, Matlab achieve.)

DTFT的实现 适用于初学者的适用于初学者的适用于初学者的(Implementation of DTFT)

说明：  本文在DCT噪声信号模型研究的基础上,提出了一种新的音频水印嵌入位置选择策略和一个应用该策略的自适应音频水印算法. 通过定义DCT系数的噪声敏感度,建立了水印嵌入位置和嵌入水印后的音频信号的听觉感知性之间的关系,根据音频水印的不可听性的要求选择最优的嵌入位置,然后调节水印强度来满足鲁棒性的要求,从而最大程度地保持音频水 印的不可听性和鲁棒性,为解决音频水印嵌入过程中不可听性和鲁棒性之间的矛盾提供了一种策略.(Though m any w orks in the literature agree that w aterm ark should be em bedded in the middle2fre2 quency coefficients or percep tually significant components, how to determ ine the position em bedded has no universal definition. A new em bedding strategy and an algorithm app lying the strategy are p roposed for audio w aterm arking in DCT dom ain based on research of DCT noise m odal. B y defining a noise sensitivity vector, a m ath relationship betw een the w aterm ark em beddable position and the audible quality of the audio file w ith w aterm ark is set up.)

说明：  Gauss列主元素消去法,同时给了Matlab的M文件和C代码文件。(out the main elements of Gauss elimination, but also to the Matlab M C code files and documents.)

2011年数学建模B题程序代码，解决城市网点分布缉拿小偷的问题(2011 Mathematical modeling code of Problem B)

WIM2-ITU的Matlab 文档，很有借鉴性(WIM2-ITU Matlab documentation)

《Matlab遗传算法工具箱及应用》源码(The Matlab genetic algorithm toolbox and application source code )

输入一个您需要判断的数，然后通过程序判断数的大小类别(judge the number you input)