公开(公告)号：US20070189507A1

公开(公告)日：2007-08-16

申请号：US11622318

申请日：2007-01-11

申请人： Martin Tittle ,  Manfred Lutzky ,  Juergen Hupp

发明人： Martin Tittle ,  Manfred Lutzky ,  Juergen Hupp

IPC分类号： H04M9/08

CPC分类号： H04M3/56 ,  H04M3/002 ,  H04M3/568 ,  H04M9/082

摘要： A conference terminal for a digital voice conference system comprises a first sound transducer means, which is implemented to generate a microphone signal from an acoustic signal, a second sound transducer means, which is implemented to generate an acoustic signal from a loudspeaker signal, a connecting means, which is implemented to enable a connection between conference terminal and a conference central unit, to receive a composite conference signal from the conference central unit, and a means for echo suppression, which is implemented to combine the microphone signal or a signal derived therefrom in a noise suppression means with a composite conference signal in a listening operation of the conference terminal, such that a loudspeaker signal results, in which the acoustic signal, on which the microphone signal is based, is reduced. Such a conference terminal allows the suppression of a remote own echo and a remote foreign echo, whereby digital wireless voice conference systems can be realized, which ensure high voice quality and noise immunity with minimum wiring effort.

摘要翻译： 用于数字语音会议系统的会议终端包括被实现为从声学信号产生麦克风信号的第一声音传感器装置，被实现为从扬声器信号产生声学信号的第二声音传感器装置，连接 用于实现会议终端与会议中心单元之间的连接的装置，用于从会议中心单元接收复合会议信号，以及用于回声抑制的装置，其被实现为组合麦克风信号或从其导出的信号 在具有会议终端的收听操作中的复合会议信号的噪声抑制装置中，使得其中麦克风信号所基于的声信号被减小的扬声器信号。 这样的会议终端允许抑制远程自己的回声和远程外部回声，由此可以实现数字无线语音会议系统，其以最小布线努力确保高语音质量和抗噪声性。