Audio teleconferencing apparatus

Details Audio teleconferencing apparatus Audio teleconferencing apparatus

1995-08-10

1996-08-20

Hofsass, Jeffery

Telephonic communications

Special services

Conferencing

379347, 379409, 379410, 379399, 379389, 379390, H04M 356

Patent

active

055486380

ABSTRACT:
An audio teleconferencing apparatus which permits two-way communications between more than two parties without the necessity of complete switching and does not allow a loss to increase in a communication channel of a particular speaker. The audio teleconferencing apparatus further comprises more than two line interface circuits, each provided with a voice activity detector for detecting voice activity in a received speech signal, a received-speech variable loss for inserting a loss into a speech receiving path when the received speech signal is voice non-active, and a sending-speech variable loss for inserting a loss in a speech signal transmission or sending path when the speech to be sent is voice-active, whereby a certain loss is inserted in any four-wire multiplex loop in the line interface circuit.

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patent: 5343521 (1994-08-01), Jullien et al.
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