公开(公告)号：US20150098559A1

公开(公告)日：2015-04-09

申请号：US14571528

申请日：2014-12-16

Applicant: TIMOTHY D ROOT

Inventor： TIMOTHY D ROOT

IPC: H04M3/56

CPC classification number: H04M3/568 ,  G10L2021/02082 ,  H04M3/002 ,  H04M3/567 ,  H04M9/082 ,  H04M2203/509 ,  H04M2250/62

Abstract: A digital audio conferencing system has a fixed base station that is in communication with a far end (R.E.) system over a communication network. The base station is associated with a wireless loudspeaker and one or more wireless microphones. The base station operates to receive F.E. audio signals to be played by the wireless loudspeaker, and it operates to remove acoustic echo picked up by the wireless microphones. A first clock controlling F.E. audio signal sampling at the base station, and a second clock controlling audio signal sampling and at a wireless microphone are synchronized to one master, reference clock that controls the operation of the base station. Acoustic echo included in an audio signal picked up by a wireless microphone is removed by AEC functionality running in the base station.

Abstract translation: 数字音频会议系统具有通过通信网络与远端（R.E.）系统通信的固定基站。 基站与无线扬声器和一个或多个无线麦克风相关联。 基站操作以接收由无线扬声器播放的F.E.音频信号，并且其操作以去除由无线麦克风拾取的声学回声。 控制基站处的F.E.音频信号采样的第一时钟和控制音频信号采样的第二时钟和无线麦克风同步到控制基站操作的一个主控参考时钟。 包含在由无线麦克风拾取的音频信号中的声学回声由在基站中运行的AEC功能消除。