wavelets

这是《小波分析理论与MATLABR2007实现》的源代码。主要是基于Matlab的小波工具箱实现小波基选择、小波包分解、Mallat变换以及小波变换在边缘提取、图像去噪、数据压缩等中的应用，特别包含了二代提升小波的相关内容，理论与实际相结合。大家想要了解的二进小波、正交镜像滤波器组[QMF]等概念这里都有体现。(This is 《MATLABR2007 wavelet analysis theory and implementation》 of the source code. Mainly based on the Matlab wavelet toolbox implementation of wavelet selection, wavelet packet decomposition, Mallat transform and wavelet transform in edge detection, image denoising, data compression, such as the application, in particular, contains a second generation of relevant content Lifting Wavelet theory and reality. Everyone wanted to know about the dyadic wavelet, quadrature mirror filters [QMF] concepts are embodied here.)

使用trim分析动态系统的平衡点， matlab(Trim analysis of dynamic systems using the equilibrium point)

说明：   1.录制一段自己的语音信号，并对录制的信号进行采样； 2.画出采样后的语音信号的时域波形和频谱图； 3.给定滤波器的性能指标，采用窗函数法和双线性变换法设计滤波器， 并划出滤波器的频域响应； 4.用该滤波器对采集的信号进行滤波，画出滤波后信号的时域波形和频谱， 并对滤波前后的信号进行对比，分析信号的变化； 5.回放语音信号； 6.设计一个信号处理系统界面(1. Recorded their own voice for some signal, and recording the signal sampling 2. Draw samples of the voice signal after the time-domain waveform and frequency spectrum 3. Given filter performance indicators, using a window function method and dual- Design of linear transformation filters, and draw the filter frequency response 4. to use the filters on the collected signal filtering, after filtering the signal to draw the time-domain waveform and spectrum, and filtering of signals before and after contrast, analysis of signal changes 5. playback voice signal 6. to design a signal processing system interface)

基于相位差法改变窗长的频谱校正程序，适用于单频率信号的校正(Phase method to change the window length based on the spectrum correction procedure for a single frequency signal correction )

图像的放大缩小，其中缩小任意比例，放大整数比。在matlab的work路径中选择需要操作的图像，图像使用者自备。(Image Zoom, which reduce the arbitrary ratio to enlarge than integer. In matlab choose the path of work need to operate images, user-owned images.)

很好很实用的matlab工具函数包括：其中有大量的方程求解的相关问题的程序及说明(Nice and useful tool matlab functions include: a large number of equations in which issues related to the procedures and instructions)

说明：  这是学习matlab的经典课件的第二部分，第六到九章，包含微分方程求解、代数方程与最优化问题求解、概率论与数理统计问题求解、数学问题的非传统解法等等 (This is a classic learning courseware matlab second part of the sixth to nine chapters, including the differential equation solving, algebraic equations and optimization problem solving, probability theory and mathematical statistics, problem solving, mathematical problems of non-traditional method, etc.)

模拟退火的源程序，matlab编写，多次试用成功(simulated annealing of the source, Matlab prepared several successful trial)

boost变换器是一种DCDC升压装置，使用及其广泛，而且性能稳定。该matlab仿真模型是电压模式控制下的boost变换器模型，保持输出电压稳定。该模型应用simulink仿真。效果挺好。(Boost converter is a kind of DCDC booster device, use and wide, and stable performance. The matlab simulation model is under the control of voltage mode boost converter model, keep the output voltage stability. )

实现故障诊断！供大家参考!有需要的朋友可以下载过来参考(gu zhang zhengduan )