WO2001078365A3 - Method and apparatus for providing unified conferencing services in a telecommunications system - Google Patents

Method and apparatus for providing unified conferencing services in a telecommunications system Download PDF

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Publication number
WO2001078365A3
WO2001078365A3 PCT/US2001/011072 US0111072W WO0178365A3 WO 2001078365 A3 WO2001078365 A3 WO 2001078365A3 US 0111072 W US0111072 W US 0111072W WO 0178365 A3 WO0178365 A3 WO 0178365A3
Authority
WO
WIPO (PCT)
Prior art keywords
loudest
channels
sum
conference
written out
Prior art date
Application number
PCT/US2001/011072
Other languages
French (fr)
Other versions
WO2001078365A2 (en
Inventor
Franz Weller
Original Assignee
Lucent Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lucent Technologies Inc filed Critical Lucent Technologies Inc
Priority to AU2001249880A priority Critical patent/AU2001249880A1/en
Publication of WO2001078365A2 publication Critical patent/WO2001078365A2/en
Publication of WO2001078365A3 publication Critical patent/WO2001078365A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/568—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/561—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities by multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2203/00—Aspects of automatic or semi-automatic exchanges
    • H04M2203/50—Aspects of automatic or semi-automatic exchanges related to audio conference
    • H04M2203/5072—Multiple active speakers

Abstract

A method and apparatus for providing unified conferencing services in a telecommunications system is described. A DSP chip in the system contains an internal CPU and on-chip memory storage device. The CPU is programmed such that when a conference has been established, the time slots or channels of PCM information are collected and stored. Channels are sub-sampled at a pre-determined optimal time in-terval. The energy for each sub-sample, which is a mathematical summation over time utilizing a sum of squares equation, is calculated for each channel. These calculated energies are stored in an associated array. The energies are surveyed to select the N loudest channels. The input signals (the voice information) for those N loudest channels are used to form the conference. More specifically, the sum of the N loudest channels is generated. This sum forms the basis for a broadcast output. In the case of an individual participant who is not one of the N loudest, the broadcast output is written out in the correct PCM format to that conferee. In the case of an individual participant who is actually one of the N loudest, its own sample is subtracted from the total sum and the result is written out in the correct PCM format to the particular conferee. The broadcast outputs are also written out in required PCM formats for half-duplex listen-only connections to the conference.
PCT/US2001/011072 2000-04-07 2001-04-05 Method and apparatus for providing unified conferencing services in a telecommunications system WO2001078365A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001249880A AU2001249880A1 (en) 2000-04-07 2001-04-05 A method and apparatus for providing unified conferencing services in a telecommunications system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/545,070 2000-04-07
US09/545,070 US6662211B1 (en) 2000-04-07 2000-04-07 Method and system for providing conferencing services in a telecommunications system

Publications (2)

Publication Number Publication Date
WO2001078365A2 WO2001078365A2 (en) 2001-10-18
WO2001078365A3 true WO2001078365A3 (en) 2002-01-31

Family

ID=24174778

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/011072 WO2001078365A2 (en) 2000-04-07 2001-04-05 Method and apparatus for providing unified conferencing services in a telecommunications system

Country Status (3)

Country Link
US (1) US6662211B1 (en)
AU (1) AU2001249880A1 (en)
WO (1) WO2001078365A2 (en)

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AU2003256757A1 (en) * 2002-08-02 2004-02-23 Collabo-Technology, Inc. Method and apparatus for identifying a speaker in a conferencing system
US6714635B1 (en) * 2002-09-10 2004-03-30 Voyant Technologies, Inc. Method for reservation-less instant group conferencing
US7421072B2 (en) * 2002-10-04 2008-09-02 Avaya Inc Location-based bridging in call centers
US7450528B1 (en) 2004-02-17 2008-11-11 Dialogic Corporation Method and apparatus for performing echo suppression
US7113580B1 (en) 2004-02-17 2006-09-26 Excel Switching Corporation Method and apparatus for performing conferencing services and echo suppression
US20050190706A1 (en) * 2004-02-26 2005-09-01 Henderson Eric A. Automatic conferencing service
US8036358B2 (en) * 2004-03-09 2011-10-11 Siemens Enterprise Communications, Inc. Distributed voice conferencing
US7991889B2 (en) * 2004-05-07 2011-08-02 Alcatel-Lucent Usa Inc. Apparatus and method for managing networks having resources having reduced, nonzero functionality
US8072909B2 (en) * 2004-11-15 2011-12-06 Applied Voice & Speech Technologies, Inc. Apparatus and method for notification of a party in a telephone conference
US7599357B1 (en) * 2004-12-14 2009-10-06 At&T Corp. Method and apparatus for detecting and correcting electrical interference in a conference call
US8334891B2 (en) * 2007-03-05 2012-12-18 Cisco Technology, Inc. Multipoint conference video switching
US8264521B2 (en) 2007-04-30 2012-09-11 Cisco Technology, Inc. Media detection and packet distribution in a multipoint conference
US8385233B2 (en) 2007-06-12 2013-02-26 Microsoft Corporation Active speaker identification
US9003302B1 (en) 2007-12-05 2015-04-07 Sprint Spectrum L.P. Anonymous sidebar method and system
US7866850B2 (en) * 2008-02-26 2011-01-11 Journée Lighting, Inc. Light fixture assembly and LED assembly
US9565782B2 (en) 2013-02-15 2017-02-07 Ecosense Lighting Inc. Field replaceable power supply cartridge
US10477636B1 (en) 2014-10-28 2019-11-12 Ecosense Lighting Inc. Lighting systems having multiple light sources
US9869450B2 (en) 2015-02-09 2018-01-16 Ecosense Lighting Inc. Lighting systems having a truncated parabolic- or hyperbolic-conical light reflector, or a total internal reflection lens; and having another light reflector
US11306897B2 (en) 2015-02-09 2022-04-19 Ecosense Lighting Inc. Lighting systems generating partially-collimated light emissions
US9746159B1 (en) 2015-03-03 2017-08-29 Ecosense Lighting Inc. Lighting system having a sealing system
US9651227B2 (en) 2015-03-03 2017-05-16 Ecosense Lighting Inc. Low-profile lighting system having pivotable lighting enclosure
US9651216B2 (en) 2015-03-03 2017-05-16 Ecosense Lighting Inc. Lighting systems including asymmetric lens modules for selectable light distribution
US9568665B2 (en) 2015-03-03 2017-02-14 Ecosense Lighting Inc. Lighting systems including lens modules for selectable light distribution
USD785218S1 (en) 2015-07-06 2017-04-25 Ecosense Lighting Inc. LED luminaire having a mounting system
USD782094S1 (en) 2015-07-20 2017-03-21 Ecosense Lighting Inc. LED luminaire having a mounting system
USD782093S1 (en) 2015-07-20 2017-03-21 Ecosense Lighting Inc. LED luminaire having a mounting system
US9651232B1 (en) 2015-08-03 2017-05-16 Ecosense Lighting Inc. Lighting system having a mounting device
CN107800902B (en) * 2017-09-15 2019-09-13 北京容联易通信息技术有限公司 The sound mixing method and system of multi-path voice

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US5768263A (en) * 1995-10-20 1998-06-16 Vtel Corporation Method for talk/listen determination and multipoint conferencing system using such method
US5883945A (en) * 1995-10-27 1999-03-16 United States Advanced Network, Inc. Three-way call detection and response system

Also Published As

Publication number Publication date
WO2001078365A2 (en) 2001-10-18
AU2001249880A1 (en) 2001-10-23
US6662211B1 (en) 2003-12-09

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