该代码首先对ECG信号进行消噪过滤，并且对信号进行平方，加窗等处理-The code first ECG signal denoising filter, and the square of the signal, windowing and other processing

很有价值的消回音降噪语音处理芯片，具体技术支持请联系郭生13189769580-Valuable noise reduction echo cancellation voice processing chip, specific technical support, please contact Guo Sheng 13189769580