Thesis on echo cancellation

基于高阶累积量的生命微动信号检测方法的研究成果，发表在IEEE Transaction Geoscience and Remote Sensing 期刊上-The research on vital information extraction meets a lot challenges due to the narrow bandwidth and low signal-to-noise ratio of a vital sign in real environment. In th

短信猫，at指令集合， AT 测试连接是否正确 ATE0 关闭回显。程序初始化AT部分首先关闭回显。 ATE1 打开回显。使用超级终端测试命令时打开。 AT+CGMI 得到厂商信息-SMS cat, at the instruction set, the AT test connection is correct ATE0 off echo. The program the initialization AT part of the first turn off the e

Ultrasonic quatus Input: Echo Output: Trig,D[15:0]

通过计算分析输出信号的自相关函数利用基于自相关函数的方法来估计衰减系数和延迟，并利用快速傅里叶变换将回波信号滤除回声，得到原声音信号，同时根据延迟估计反射物的距离。-Analysis by calculating the autocorrelation function of the output signal utilizing the autocorrelation function based method to estimate the attenuation coefficient a