Switching system comprising a conference arrangement

Details Switching system comprising a conference arrangement Switching system comprising a conference arrangement

1991-05-21

1993-11-09

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 79, 370 80, 379158, 379202, H04L 1218, H04M 356

Patent

active

052609383

ABSTRACT:
A telephone switching system, or teleconferencing arrangement, in which each participant hears all the other speakers but does not hear his own voice. The speech intensity of each participant is measured and subtracted from a signal which is based on the sum of all the other participants then speaking. This difference signal is then compared with a threshold to determine if this participant is rated "speaking" (signal to be added for others to hear) or "listening". The speech intensity signal is multiplied by a weighing factor based on this comparison, before adding to the other weighted signals to form the sum signal.

REFERENCES:
patent: 4591827 (1986-05-01), Nishita et al.
patent: 4607362 (1986-08-01), Vary et al.
patent: 4658398 (1987-04-01), Hsing

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