PN-code

讲述经验模态分解的应用，对于其原理及消噪功能有很好的介绍(About the application of EMD)

清音的对数幅度谱，短时过零率，平均能量，基音周期(Voiceless logarithmic amplitude spectrum, short-term zero crossing rate, average energy, pitch period)

数值分析上机题的matlab程序，含有丰富的注释，并且在已经通过验证(Numerical analysis on the problem of machine matlab program, rich in notes, and has been validated)

利用Matlab内建的快速傅氏变换函数可以方便地在波数域计算重磁异常导数。介绍了基于Matlab语言的波数域求导的算法，给出了程序源代码，讨论了一些有助于提高计算精度的编程技巧。通过模型试验和数据分析， 发现在计算垂向导数时波数域求导算法的精度比傅氏级数的精度有明显改善；而水平导数的计算，2种方法的精度相当。在某区钾盐勘探中，用该方法处理高精度重力剖面数据，取得了较好效果。(It is convenient to calculate derivative in wave number space using the inbuih F胛function in Matlab．This paper describes a matlab algorithm for derivative calculation of 1 D gravity and magnetic anomaly in wave number space，gives code of program and deals with some programming skills for precision improvement．Throngh model test and data analysis，it is found that the precision of the F盯method is much higher than that of the Fourier Series method in vertical derivative calculation．In horizontal derivative calculation， however，the precisions of the two methods ale almost the same．During kainite exploration in a certain basin，satisfactory result Wag obtained in the processing of gravity profile data using this method．)

计算扩展频带信号的循环谱 对循环相关感兴趣者下载(Calculation of the expansion of the cyclic spectrum band signals related to the cycle of interest to those who download)

matlab经验模态分解 emd 工具包 包含emd常用函数，可用于机械设备故障诊断(Matlab empirical mode decomposition toolkit can be directly used in mechanical equipment fault diagnosis)

说明：  面波数值模拟，交错网格法高阶有限差分数值模拟算法(Surface wave numerical simulation)

图像复原的一些资料，包括对加有噪声的图片进行恢复，频域增强等(Image restoration of some of the information, including images with noise added to restore, enhance and so the frequency domain)

matlab傅里叶级数的代码，注意不是傅里叶变换(Fourier series code, note that not Fourier transform)

CDMA detection including transmitter and receiver