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自编实现快速fft程序，速度较调用系统的fft稍慢(Fast fft own procedures, faster than the system call fft slower)

双树复小波双变量阈值去噪，自己编写，仅供学习！(Tree complex wavelet bivariate threshold denoising, write your own, only to learn!)

说明：  %inverstable inverse_tb = gf(zeros(1, t+1), m); for i=1:t+1, inverse_tb(i) = alpha^(-i+1); end; %chien's search lambda_v = zero; accu_tb=gf(ones(1, t+1), m); for i=1:n, lambda_v=lambda*accu_tb'; accu_tb = accu_tb.*inverse_tb; if(lambda_v==zero) error(1,n-i+1)=1; else error(1,n-i+1)=0; end end found = find(error(1,:)~=0)

说明：  基于多孔算法的非抽样小波该方法运算时间少 重构图像效果好(Trous algorithm based on the non-sampling methods of computing the wavelet reconstructed image less effective)

voice activity detect

bresenham algorithm for tracking

path planning of mobile robot

DES3200实验系统的模拟信号输出通道产生一个1KHz 的方波,然后利用信号输入通道对产生的方进行低通滤波,得到一个1KHz 的正弦信号，并使用CCS 的图形显示工具显示输入和输出的波形。这里我们使用的是一个46阶的对称结构的FIR低通滤波器，其采样频率Fs为25KHZ，通带截止频率 1KHZ，阻带截止频率为3KHZ，阻带衰减为-60dB。(DES3200 experimental system analog output channel generates a 1KHz square wave, and then use the signal input channels that produce low-pass filtering the square to get a 1KHz sinusoidal signal, and use the CCS' s graphical display tool shows the input and output waveforms. Here we use a symmetrical structure of 46-order FIR low-pass filter, the sampling frequency Fs to 25KHZ, passband cutoff frequency 1KHZ, stopband cutoff frequency 3KHZ, stop-band attenuation is-60dB.)

matlab编写的square wave的fftbianhuan(matlab prepared square wave of fftbianhuan)

数字水印MATLAB编程中长用到的一些函数，Z字扫描和NC值计算，希望有帮助(MATLAB programming in digital watermarking used in some of the function of a long, Z word scan and NC values, hopes to help)