pll

rare aac encoder developed by japanees guy

说明：  该函数利用高斯频谱产生一维的高斯随机起伏地表。(RSGENG generates 1D Gaussian random rough surfaces with Gaussian Spectrum.)

说明：  利用matlab生成的随机数做蒲丰（buffon）投针问题．(Is Pu Feng using the matlab production s random number (buffon) to throw the needle question. )

A filter is a system which modifies some special frequencies reletive to the others. As a result it is applicable in some applications when it is necessary to have different gains & phase shifts at different frequencies to perform specific filtering tasks. For example in an audio file which is corrupted by noise it is convinient to use a filter to cancel those frequencies which are affected by noise and consequently having a better sound quality. During this MATLAB experiment we are trying to cancel the noise frequencies out of the original signal frequencies to get the original signal. Due to do this task, different types of filters such as FIR and IIR filters are used. In FIR filters, we use two type of common windows such as fixed window like Hanning and adjustable window like Kaiser. In IIR filters four different types of filter such as Butterworth, Chebyshev I, Chebyshev II, Elliptic are used.

利用S函数实现的变步长电导增量法，需要和模型结合(The variable step length conductance increment method realized by S function needs to be combined with the model)

SAPHER FUNCTION FOR OPTIMAZATION

Color Image Enhancement Techniques: A Critical Review Abstract Image enhancement is one of the key issues in high quality pictures such as digital camera and HDTV. Since Image clarity is very easily affected by lighting, weather, or equipment that has been used to capture the image. These conditions lead to image may suffer from loss of information. As a result, many techniques have developed known as image Enhancement techniques to recover the information in an image. This paper presents a literature review on some of the image Enhancement techniques for color image enhancement like, Contrast Stretching, Histogram Equalization and its improvement versions, Homomorphic Filtering, Retinex, and Wavelet Multiscale Transform. Comparison of all the techniques concludes the better approach for its future research

经典的用matlab编写的ID3算法，仅供大家分享(classic with Matlab prepared by the ID3 algorithm, is for everyone to share!)

Two photon absorption

自适应信号处理，最终的权值矩阵就是滤波器的系数，学习曲线描述其收敛特性(Adaptive signal processing, the final weight matrix is the filter coefficient, the learning curve to describe the convergence properties)