CRLB

implementation to calculate the snr of a mri signal

数字信号处理基于matlab实现的很好的电子书，里面含有大量的实例和讲解，不容错(Matlab-based digital signal processing to achieve a good e-book, which contains a large number of examples and explanations, is not fault-tolerant)

说明：  该程序为文本文档，可在matlab 中运行(the procedures for text documents can be run in Matlab)

A Costas loop is a phase-locked loop used for carrier phase recovery from suppressed-carrier modulation signals, such as from double-sideband suppressed carrier signals. It was invented by John P. Costas at General Electric in the 1950s. Its invention was described as having had "a profound effect on modern digital communications".

用matlab对wav文件采用不同的方式读取（wavread和fopen），并对其进行低通滤波处理。滤波用的fir直接型低通滤波器(to read the wav file in different ways with Matlab (wavread, and fopen), and then low-pass filtering. the low-pass filter is direct_type FIR filter )

用2fsk和2ask调制解调来仿真对语音信号的提取等(With 2 FSK and 2 ask demodulation of speech signal to the simulation of extraction, etc)

This a two dimensional level set code that extends quanities off the interface using a first order Godunov scheme.

亚波长抗反射结构图，可以显示投射率的变化大小(subwavelength antireflect)

一本matlab程序设计与应用的电子资料，结构层次以及内容都很容易自学。(A matlab program design and application of electronic data, structure and content are easy to self-study.)

在matlab环境下编写的拉格朗日代码，有需要的可以看看(Lagrangian code written in matlab environment)