Switching system comprising a conference arrangement
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United States of America Patent
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Nov 9, 1993
Grant Date -
N/A
app pub date -
May 21, 1991
filing date -
May 26, 1990
priority date (Note) -
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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.
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