Liu

line with hough transform

1 录入一段语音，对其进行时域频域处理，通过变频、变速达到变声目的，且使处理后的语音信号不影响正常收听与理解。 2 用图形用户界面（GUI）对上述变声前变声后进行时域频域图形输出，不同的频率、速度有不同的输出，且对前后波形进行比较 (1 entry a voice, the frequency domain and time domain by frequency conversion variable speed, processing to make the treatment and voice purpose, after the speech signal shall not affect the normal to listen to and understand. 2 with the graphical user interface (GUI) voice of the above voice before after the frequency domain in the time domain graphics output, different frequency, speed have different output, and compared before and after waveform )

雷达原理简要介绍，简单易懂，PDF格式的，适合初学者(The radar principle brief introduction, easy to understand, PDF format, suitable for beginners)

说明：  破解，逆向必备工具包，使用也很简单，我了个去(Hack, reverse essential kit)

code for BPRS input generation

说明：  基于GUI的电弧炉对电网影响仿真软件，matlab编写。(GUI-based electric arc furnace of the power grids of the impact of simulation software, matlab prepared.)

利用matlab对暂态信号进行短时能量分析，频谱分析，以及短时傅里叶变换。(Use of matlab for short-term energy of the transient signal analysis, spectrum analysis, and short time Fourier transform.)

Extended Kalman Filter for nonlinear dynamic systems

Ready solution for the lmathlab program of testing project theory

根据卫星星历及测者位置，判断卫星是否可见(satellite ephemeris and location were measured to determine whether the satellite can be seen)