matlabstudy

基-2的1024点FFT算法，并与理论FFT结果比较，改程序是正确的.(1024-point radix-2 FFT algorithm, and compared with the theoretical results of the FFT, to change the program is correct.)

说明：  数学建模matlab应用总结，针对多个数学模型进行编程(Mathematical modeling matlab application summary)

CV1 - it is used for learnig work in matlab(CV1- it is used for learnig work in matlab)

function [x, hist] = secant(x, f, tola, tolr) SECANT This a secant code with no line search. This code terminates on small relative-absolute errors function [X, HIST] = SECANT(X, F, TOLA, TOLR) Inputs: X = initial iterate F = function TOLA = absolute error tolerance TOLR = relative error tolerance Output: X = approximate result

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 )

FUNCTION FILE DMC VARIABLES

cdma2000的编码器关于 turbo码编码器2个子程序(cdma2000 encoder on turbo coding for two sub-procedures)

粒子群算法Matlab程序（反复调试过，还有运行过程）(Particle swarm algorithm Matlab procedures (testing repeatedly, during operation))

仿真图是速度、距离、幅度三维图像，虚拟力的无线传感网络覆盖，数学方法是部分子空间法。( FIG simulation speed, distance, amplitude three-dimensional image, Virtual power wireless sensor network coverage, Mathematics is part of the subspace.)

说明：  基于MATLAB的ASK编码，已经通过了MATLAB调试了(MATLAB-based ASK encoding, has adopted a MATLAB debugging)