DFT

张德丰基于MATLAB的系统分析与设计——小波分析+范例源码；详细介绍包括小波分析工具箱的的使用（范例代码），小波去噪，图像压缩，并范例实现。另外还有小波包分析技术的理论及应用(Zhang Defeng MATLAB-Based System Analysis and Design- wavelet analysis+ example source details, including the use of wavelet analysis toolbox (sample code), wavelet denoising, image compression, and examples of implementation. There is also the theory of wavelet packet analysis and application)

说明：  DSP本身在内的所有电子器件都是干扰源，而且系统所处的工作环境中还有很多外来干扰源，再加上语音识别技术对信号噪声非常敏感，所以在系统设计中必须考虑系统的抗干扰问题。(DSP itself, including all electronic devices are sources of interference, and the system environment in which there are many external sources of interference, coupled with voice recognition technology is very sensitive to signal noise, so the system design must consider the system of anti- interference problem.)

This code shows how one can apply Method of Moment technique to EM problems.

sd method for optimum design

超声换能器线性阵列声强和声压峰值计算案例(calculations of intensities and peak pressure of the linear arrays)

Segmentation function for matlab : this fucntion convert an intensity image to a binary image by using Entropy-based method.

matlab code for deec protocol

画图像的直方图，先通过统计的方法，得到统计块数，可自行定义横纵坐标(Draw image histogram, first by statistical methods, the statistics the number of blocks, you can define horizontal and vertical coordinates)

风力发电机的传动链模型，四模块模型，高速轴、低速轴与风机、发电机柔性连接(Wind turbine drive chain model, the four modules model, high-speed shaft, low speed shaft and fan, generator flexible connection)

非归零型差分相位调制信号建模与仿真分析 ，音频信号通过LM386放大，是国外的成品模型。( NRZ type differential phase modulation signal modeling and simulation analysis, LM386 audio signal amplification, Foreign model is finished.)