用同态滤波方法（倒谱）解决回声干扰问题。给出了一句语音，并在此信号上叠加回声干扰，通过倒谱的方法将信号和回声的冲击响应分开。-using the same state filtering method (cepstrum) Echo solve the interference problem. Given a voice, and in this echo superimposed on the signal interference

一个小程序，用Veilog HDL编写的，可以用于篮球比赛的倒计时牌，已在max-plusII上仿真通过。-a small program, prepared by the Veilog HDL, can be used for the basketball game countdown. have max-plusII on through simulation.

单片机(AT89S52)实现多功能数字钟 该数字钟实现时钟运行，调整，倒计时，秒表功能，且精确度经调试一天的误差在2S内。 -SCM (AT89S52) to achieve multi-functional digital clock digital clock to achieve the clock is running, adjustment, countdown, stopwatch function, and the