频域波数2

改进了一位同行的生产者与消费者问题的演示-improved a peer-producers and consumers of the demo!

说明：  目前的代码是一个matlab函数，它提供给定信号x[n]的短时傅立叶变换（stft）。该函数是matlab命令“光谱图”的一个替代项。功能输出为： 1）一个具有复杂stft系数的矩阵，该矩阵具有跨列时间和跨行频率； 2）频率矢量； 3）时间矢量。 为了阐明函数的用法，给出了一个示例。为了方便起见，输入和输出参数在函数的开头给出。(The present code is a Matlab function that provides a Short-Time Fourier Transform (STFT) of a given signal x[n]. The function is an alternative of the Matlab command spectrogram The output of the function is 1) a matrix with the complex STFT coefficients with time across the columns and frequency across the rows; 2) a frequency vector; 3) a time vector. An example is given in order to clarify the usage of the function. For convenience, the input and output arguments are given in the beginning of the function.)

ldpc简单的编码以及译码的MATLAB程序(LDPC simple encoding and decoding program)

说明：  不错的android录音代码，适合初学者使用(Android recording code is good)

onenet 开发板原理图 物联网开发 esp8266(Onenet development board schematics, Internet of things development esp8266)

A good presentation on Kalman Filter

这是一个Visual Basic 源代码程序，它通过变更用户权限的方法，让某一个应用程序在相对安全的状态下运行，从而提高系统的安全性。(This is a Visual Basic source code program, change user permissions, so that an application running in the relative safety of the state, to improve the security of the system.)

拼多多微擎模块 查优惠卷 配合主程序使用(Put together multiple micro engine modules to check preferential vouchers)

说明：  利用R语言，根据GARCH模型进行波动率的预测。(GARCH model is used to forecast volatility.)

进行波动方程正演模拟的程序，在C++中编译通过，可以得到加吸收边界的模拟剖面-Wave equation for forward modeling procedure, in C++ In the compiler is passed, plus absorbing boundary can be simulated profile