* @file stm32_eval.c * @author MCD Application Team * @version V4.3.0 * @date 10/15/2010 * @brief STM32xx-EVAL abstraction layer. * This file should be added to the main application to use the provided * functions that manage Leds

* @file stm32_eval.c * @author MCD Application Team * @version V4.3.0 * @date 10/15/2010 * @brief STM32xx-EVAL abstraction layer. * This file should be added to the main application to use the provided * functions that manage Leds

音频读入和输出的源码,标准C++格式,可在windows下编译.-brief AudioIO uses the PortAudio library to play and record sound.

webrtc 的回声抵消(aec、aecm)算法主要包括以下几个重要模块：1.回声时延估计 2.NLMS(归一化最小均方自适应算法) 3.NLP（非线性滤波） 4.CNG(舒适噪声产生），一般经典aec算法还应包括双端检测(DT)。考虑到webrtc使用的NLMS、NLP和CNG都属于经典算法范畴，故只做简略介绍，本文重点介绍webrtc的回声时延估计算法,这也是webrtc回声抵消算法区别一般算法(如视频会议中的算法)比较有特色的地方。-webrtc echo canceller (aec,