chazhi-nihe

matlab程序，PM标准扩散源码，好不容易才找到的(matlab program, PM standards for the proliferation of source code, hard to find the)

偏微分方程的MATLAB解法 对学习matlab环境下计算偏微分方程有很好的帮助。同时，也可以用其中的PDEOOL为计算流体力学中的二维问题生成三角形网格，减少前处理工作量(Solution of Partial Differential Equations MATLAB computing environment for learning matlab partial differential equations have a good help. Also, you can use one of the PDEOOL for the two-dimensional computational fluid dynamics problems in the triangular mesh generated, reduce the workload of pre-treatment)

说明：  带通滤波器的设计，完成多功能滤波器的比较及主旁瓣分析和扩展效应(filter)

digital fir filter with matlab4

用菲涅耳衍射模拟液晶相控阵的远场光强分布(Fresnel diffraction simulation of liquid crystal phased array far-field intensity distribution)

Hi...here is several matlab code inaudio pprocessing

qr算法的matlab代码，利用矩阵的QR分解，逐步按递推法构造矩阵的分解序列的过程，只要原始矩阵式非奇异矩阵，则由QR算法就完全确定其分解序列了(qr algorithm matlab code using a QR decomposition of the matrix, step by step process of the recursive method to construct the matrix decomposition sequence, as long as the original matrix nonsingular matrix by the QR algorithm completely determine the sequence of its decomposition)

模态分析中位移数据处理的有效程序，可以非常容易的得到位移处理结果(Effective procedures modal analysis displacement data processing can be very easy to get the displacement results)

本程序是基于DCT的数字水印算法，包含水印的嵌入，提取过程！(watermarking scheme based on DCT！)

张德丰matlab小波分析源代码，从信号时-频联合分析引入小波变换，将信号的多分辨率分析及Mallat算法作为全书的重点，并在此基础上，进一步阐述了双正交小波多分辨率分析、小波包多分辨率分析、提升小波应用，还讲述了小波分析在奇异性检测、去噪及数据压缩中的应用。(Zhang Defeng Matlab wavelet analysis of the source code from the signal- frequency joint analysis of the introduction of wavelet transform, multi-resolution analysis of the signal and Mallat algorithm as the focus of the book, and on this basis, further elaborated biorthogonal wavelet multi-resolution analysis wavelet packet multi-resolution analysis, the lifting wavelet applications, but also about the application of wavelet analysis in the singularity detection, de-noising and data compression.)