CONFERENCE TERMINAL COMPRISING ECHO REDUCTION FOR A VOICE CONFERENCING SYSTEM

摘要

The invention relates to a conference terminal for a digital voice conferencing system. Said terminal comprises a first sound converter unit (56), which is configured to generate a microphone signal from an acoustic signal, a second sound converter unit (60), which is configured to generate an acoustic signal from a loudspeaker signal, a connecting device (64), which is configured to facilitate a connection between the conference terminal (50) and a central conference unit, in order to receive a collective conference signal from the central conference unit. The terminal also comprises a unit (52) for echo suppression, which is configured to combine the microphone signal or a signal derived from the latter in a listening mode with the collective conference signal in a noise-suppression device, to produce a loudspeaker signal containing a reduced acoustic signal, on which the microphone signal is based. A conference terminal of this type permits the suppression of a remote intrinsic echo and a remote extraneous echo. The invention permits the configuration of digital, wireless voice conferencing systems that guarantee a high voice-rendition quality and interference immunity with minimal wiring requirements.