notch_filter-I1

contrast image processing using matlab

这是在MATLAB上的Hopfield解决简单的TSP问题，虽然有点简单，但效果很好~(This is the MATLAB on the Hopfield simple solution of TSP, Although somewhat simple, but very effective ~)

在matlab环境下对图像进行对比度以及亮度处理，可以输入对比度参数的大小。(Image contrast in the Matlab environment, you can enter the size of the contrast parameter.)

this document is related with physic method using matlab code

use the conventional susan edge detector algorithm to detect the edges of a given image. in first step the given image will be filter.

DTMF decode for Telephony

说明：  Estimating the positions of sensor nodes is a fundamental and crucial problem in ad hoc wireless sensor networks (WSNs). In this paper, an accurate node localization method for WSNs is devised based on the weighted least squares technique with the use of time-of-arrival measurements. Computer simulations are included to evaluate the performance of the proposed approach by comparing with the classical multidimensional scaling method and Cram´ er-Rao lower bound.

语音工具箱，非常有用，matlab语音工具箱。(Voice toolbox, very useful, Matlab Speech toolbox.)

说明：  jade是一种用于复信号的盲源分离的方法，这是jade的matlab程序源代码。(Source separation of complex signals with jade.It is used in the Matlab)

锁相环相关知识，包含二阶 三阶 锁相环的介绍以及编程实例汇总(Phase-locked-related knowledge, presentation and programming examples included 2nd and 3rd order PLL summary)