数字信号处理dft变换

hilbert-huang 分析代码，用于信号分析，振动(hilbert-huang analysis)

说明：  实现小波算法，FFT以及滤波器,以及许多数学计算常用函数(this file complete wave,fft,filter and math function)

单片机实现对讲机模拟亚音，利用对讲机软件定时模拟出亚音的方波，可实现从66.7-224.5频率的亚音功能

用C语言实现最优化算法中的黄金分割法！！(optimization algorithm using c)

本文是利用C#自带的contextMenuStrip来实现； 1、在contextMenuStrip的OnClick事件中编写相应显示代码； 2、在axTOCControl的OnMouseDown事件中将对应事件与axTOCControl联系起来；    contextMenuStrip.Show(axTOCControl1, new Point(e.x, e.y));

使用vc6.0开发的学生管理系统，包括对成绩的增删改查，并有管理员权限以及带柱型图和饼图的个人成绩统计和班级成绩统计（最高成绩、最低成绩、平均分等）。 管理员用户名为space,密码为19871025。 演示程序时可打开文件夹中的050704new，里面有测试数据。(Vc6.0 students to develop the use of management systems, including additions and deletions to search results and have administrator privileges, as well as columnar with pie charts and statistics and personal accomplishments achieved statistical classes (maximum performance, minimum performance, with an average grade) . Administrator user name space, password is 19871025. Demo program can open the folder 050704new, there are test data.)

this is matlab code (this is matlab code)

at89c51snd1单片机SCMM的mp3播放程序源码 (SCMM at89c51snd1 microcontroller mp3 player source code)

经典谱估计，平均功率法，周期图法，bt算法，代码清晰明了，还配有注释(Classical spectrum estimation, the average power method, periodogram, bt algorithm code clarity, comes with comments)

说明：  STM32F407 多通道DMA连续采样代码，亲测可用(STM32F407 Multi-Channel DMA Continuous Sampling Code, Positive Testing Available)