t6

读取信号，信号滤波，信号降噪，信号分帧，信号求时间差。(Read signal, signal filtering, signal noise, signal framing, find the time difference signal.)

ESPRIT 算法matlab源代码，用于对信号进行频率估计。(ESPRIT algorithm matlab source code for the signal frequency estimation.)

说明：  用matlab编写的遗传算法实现程序，并包含测试文件(Genetic algorithm using matlab program, and includes test files)

针对强噪声背景中弱信号检测问题，在传统检测方法基础上，提出了基于联合去噪和频率调制的微弱信号检测方法。搭建自相关和小波阈值变换联合去噪系统，极大程度抑制了噪声对检测结果的不利影响。利用频率可调标准信号调制待测信号频率，使得被测信号与检测系统策动力信号的频率差满足检测条件，打破了利用Ｄｕｆｆｉｎｇ 振子检测系统只能检测与系统策动力频率相近信号的限制。(In order to solve the problem of weak signal detection in strong noise background, based on traditional detection methods, puts forward the method of weak signal detection and denoising based on frequency modulation. The self correlation and wavelet threshold transform combined de-noising system can greatly restrain the adverse effect of noise on the detection results. Use adjustable standard signal modulation signal frequency to be measured frequency, the signal detection system and the driving signal frequency difference meet the test conditions, the system can only break detection signal detection and system driving the similar frequency limit by using Duffing oscillator.)

以matlab为工具利用BP网络实现数据的建模和预测。(Matlab as a tool to use BP network for data modeling and forecasting.)

Heart rate and QRS complex detection for ECG in MATLAB.

卡尔曼滤波下的的ARMA、MA、AR模型，比较全面，特别适合初学者入门(Kalman filtering under the ARMA, MA, AR model, a more comprehensive, especially for beginners)

plot periodogram for audio app

说明：  双音频按键识别 背景： 打电话拨号时，每次按键会发出不同的声音，这些声音实际上是由一些固定频率的正弦信号合成的。因为每个按键声音包含两个不同频率的正弦信号，因此也被称为“双音频”信号，简记为DTMF。这相当于是对不同键位用‘音频’进行了编码，如同计算机领域中用数字0和1对处理对象（包括键盘）进行编码。(Two-tone buttons identify Background: When you call dial, each key emits different sounds, which is actually made up of some fixed frequency sinusoidal signal synthesis. Because the sound of each key contains two sinusoidal signals of different frequencies, it is also known as &quot two-tone&quot signal, abbreviated as DTMF. This is equivalent to different keys using the ' audio' encoded, as the computer industry with the numbers 0 and 1 pair of processing object (including the keyboard) to be encoded.)

说明：  用MATLAB实现的灰色理论代码，采用word的格式。欢迎下载。(Implemented using MATLAB code for gray theory, using word format. Welcome to download.)