FR2390864A1 - Systeme d'audioconference par liaison telephonique - Google Patents

Systeme d'audioconference par liaison telephonique

Info

Publication number
FR2390864A1
FR2390864A1 FR7714092A FR7714092A FR2390864A1 FR 2390864 A1 FR2390864 A1 FR 2390864A1 FR 7714092 A FR7714092 A FR 7714092A FR 7714092 A FR7714092 A FR 7714092A FR 2390864 A1 FR2390864 A1 FR 2390864A1
Authority
FR
France
Prior art keywords
microphones
microphone
transmission
audio
audiofrequency
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7714092A
Other languages
English (en)
Other versions
FR2390864B1 (fr
Inventor
Andre Alcaide
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Etat Francais
Original Assignee
Etat Francais
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 Etat Francais filed Critical Etat Francais
Priority to FR7714092A priority Critical patent/FR2390864A1/fr
Priority to DE2819981A priority patent/DE2819981C2/de
Priority to CH494078A priority patent/CH630208A5/fr
Priority to US05/903,916 priority patent/US4184048A/en
Priority to IT84119/78A priority patent/IT1107405B/it
Priority to CA302,956A priority patent/CA1093719A/fr
Priority to BE187536A priority patent/BE866872A/fr
Priority to NL7804996A priority patent/NL7804996A/xx
Publication of FR2390864A1 publication Critical patent/FR2390864A1/fr
Application granted granted Critical
Publication of FR2390864B1 publication Critical patent/FR2390864B1/fr
Granted legal-status Critical Current

Links

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
    • H04M3/569—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 using the instant speaker's algorithm

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Abstract

a. Système d'audioconférence entre au moins deux groupes de participants situés dans des locaux distants. b. La partie réception comprend un filtre coupe-bande possédant au moins une bande de coupure prédéterminée, et la partie émission comprend, associés à chaque microphone, un déphaseur dépassant le signal à audiofréquences transmis par le microphone, les déphaseurs étant associés par groupe distincts de microphones équirépartis autour de la table et ayant des angles de déphasage équirépartis entre 0 et 360 degrés , un filtre de bande passante complementaire de la bande de coupure prédéterminée, et des moyens de priorité qui inhibent la transmission des signaux d'identification des autres microphones dès que ledit microphone reçoit le premier un signal à audiofréquences et pendant la durée de transmission dudit signal à audiofréquences quels que soient les niveaux acoustiques des signaux à audiofréquences transmis par les autres microphones. c. Protection contre l'auto-amorçage et signalisation des locuteurs dans les systèmes d'audioconférence, de visioconférence et dans les dispositifs de transmission dite main-libre.
FR7714092A 1977-05-09 1977-05-09 Systeme d'audioconference par liaison telephonique Granted FR2390864A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FR7714092A FR2390864A1 (fr) 1977-05-09 1977-05-09 Systeme d'audioconference par liaison telephonique
CH494078A CH630208A5 (fr) 1977-05-09 1978-05-08 Installation d'audioconference par liaison telephonique.
US05/903,916 US4184048A (en) 1977-05-09 1978-05-08 System of audioconference by telephone link up
DE2819981A DE2819981C2 (de) 1977-05-09 1978-05-08 Schaltungsanordnung für Konferenzgespräche über Fernsprechleitungen
IT84119/78A IT1107405B (it) 1977-05-09 1978-05-09 Sistema di audioconferenza tramite collegamento telefonico
CA302,956A CA1093719A (fr) 1977-05-09 1978-05-09 Systeme d'audioconference par liaison telephonique
BE187536A BE866872A (fr) 1977-05-09 1978-05-09 Systeme d'audioconference par liaison telephonique
NL7804996A NL7804996A (fr) 1977-05-09 1978-05-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7714092A FR2390864A1 (fr) 1977-05-09 1977-05-09 Systeme d'audioconference par liaison telephonique

Publications (2)

Publication Number Publication Date
FR2390864A1 true FR2390864A1 (fr) 1978-12-08
FR2390864B1 FR2390864B1 (fr) 1982-03-12

Family

ID=9190548

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7714092A Granted FR2390864A1 (fr) 1977-05-09 1977-05-09 Systeme d'audioconference par liaison telephonique

Country Status (8)

Country Link
US (1) US4184048A (fr)
BE (1) BE866872A (fr)
CA (1) CA1093719A (fr)
CH (1) CH630208A5 (fr)
DE (1) DE2819981C2 (fr)
FR (1) FR2390864A1 (fr)
IT (1) IT1107405B (fr)
NL (1) NL7804996A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0041902A1 (fr) * 1980-06-11 1981-12-16 André Faye Procédé et dispositif pour établir des communications bidirectionnelles et/ou multidirectionnelles entre différentes personnes regroupées en différentes stations géographiquement éloignées et reliées entre elles par des lignes téléphoniques
FR2536615A1 (fr) * 1982-11-18 1984-05-25 Western Electric Co Dispositif de commutation vocale pour un systeme de conference telephonique
FR2580882A1 (fr) * 1985-04-19 1986-10-24 Shure Bros Dispositif de commande d'activation de microphones pour des systemes de teleconference

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US4264928A (en) * 1979-11-05 1981-04-28 Schober Gary W Conference video system
US4378468A (en) * 1980-10-10 1983-03-29 Darome, Inc. Methods and apparatus for alleviating sound-coupled feedback in conference room sound systems
JPS57125590A (en) * 1981-01-28 1982-08-04 Nec Corp Still picture transmitter
US4598418A (en) * 1985-02-05 1986-07-01 Griffith Jr Eugene R Sound system employing automatic proportional amplification
DE3536044A1 (de) * 1985-10-09 1987-04-16 Weyel Kg Konferenztisch
US4837829A (en) * 1986-01-15 1989-06-06 Jaffe Acoustics, Inc. Acoustic sound system for a room
DE3609165A1 (de) * 1986-03-19 1987-09-24 Ant Nachrichtentech Videokonferenzraum-moebelausstattung
DE3734447C1 (de) * 1987-10-12 1989-05-18 Telefonbau & Normalzeit Gmbh Konferenz-Freisprecheinrichtung
JPH01319360A (ja) * 1988-06-20 1989-12-25 Nec Corp 音声会議装置
US5121426A (en) * 1989-12-22 1992-06-09 At&T Bell Laboratories Loudspeaking telephone station including directional microphone
US5204908A (en) * 1990-09-26 1993-04-20 Lectrosonics, Inc. Sound system with rate controlled, variable attenuation
FR2682251B1 (fr) * 1991-10-02 1997-04-25 Prescom Sarl Procede et systeme de prise de son, et appareil de prise et de restitution de son.
US5185803A (en) * 1991-12-23 1993-02-09 Ford Motor Company Communication system for passenger vehicle
US5426510A (en) * 1992-06-05 1995-06-20 Dolman Associates, Inc. Audio-video system
US5353348A (en) * 1993-05-14 1994-10-04 Jrc International, Inc. Double echo cancelling system
CA2146688A1 (fr) * 1994-05-04 1995-11-05 Gregory Ciurpita Jr. Microphone et haut-parleurs et systemes utilisant cette combinaison
US7539486B2 (en) * 2002-05-06 2009-05-26 Avaya Inc. Wireless teleconferencing system
US7752050B1 (en) * 2004-09-03 2010-07-06 Stryker Corporation Multiple-user voice-based control of devices in an endoscopic imaging system
US8443279B1 (en) 2004-10-13 2013-05-14 Stryker Corporation Voice-responsive annotation of video generated by an endoscopic camera
US20070253558A1 (en) * 2006-05-01 2007-11-01 Xudong Song Methods and apparatuses for processing audio streams for use with multiple devices
US20070253557A1 (en) * 2006-05-01 2007-11-01 Xudong Song Methods And Apparatuses For Processing Audio Streams For Use With Multiple Devices
US20080118053A1 (en) * 2006-11-21 2008-05-22 Beam J Wade Speak-up
JP4871898B2 (ja) * 2008-03-04 2012-02-08 キヤノン株式会社 情報処理装置ならびに情報処理装置の制御方法
US8054991B2 (en) * 2008-04-17 2011-11-08 Panasonic Corporation Sound pickup apparatus and conference telephone
USD731996S1 (en) 2012-10-15 2015-06-16 Dolby Laboratories Licensing Corporation Telecommunications device
WO2014062389A2 (fr) * 2012-10-15 2014-04-24 Dolby Laboratories Licensing Corporation Dispositif de télécommunications
US9271069B2 (en) * 2014-01-27 2016-02-23 Revolabs, Inc Microphone housing arrangement for an audio conference system
USD784963S1 (en) 2015-03-06 2017-04-25 Dolby Laboratories Licensing Corporation Electronic device
US9554207B2 (en) 2015-04-30 2017-01-24 Shure Acquisition Holdings, Inc. Offset cartridge microphones
US9565493B2 (en) 2015-04-30 2017-02-07 Shure Acquisition Holdings, Inc. Array microphone system and method of assembling the same
US10367948B2 (en) 2017-01-13 2019-07-30 Shure Acquisition Holdings, Inc. Post-mixing acoustic echo cancellation systems and methods
EP3804356A1 (fr) 2018-06-01 2021-04-14 Shure Acquisition Holdings, Inc. Réseau de microphones à formation de motifs
USD876400S1 (en) * 2018-06-06 2020-02-25 Logitech Europe S.A. Microphone hub
US11297423B2 (en) 2018-06-15 2022-04-05 Shure Acquisition Holdings, Inc. Endfire linear array microphone
WO2020061353A1 (fr) 2018-09-20 2020-03-26 Shure Acquisition Holdings, Inc. Forme de lobe réglable pour microphones en réseau
US11558693B2 (en) 2019-03-21 2023-01-17 Shure Acquisition Holdings, Inc. Auto focus, auto focus within regions, and auto placement of beamformed microphone lobes with inhibition and voice activity detection functionality
TW202044236A (zh) 2019-03-21 2020-12-01 美商舒爾獲得控股公司 具有抑制功能的波束形成麥克風瓣之自動對焦、區域內自動對焦、及自動配置
EP3942842A1 (fr) 2019-03-21 2022-01-26 Shure Acquisition Holdings, Inc. Boîtiers et caractéristiques de conception associées pour microphones matriciels de plafond
EP3973716A1 (fr) 2019-05-23 2022-03-30 Shure Acquisition Holdings, Inc. Réseau de haut-parleurs orientables, système et procédé associé
JP2022535229A (ja) 2019-05-31 2022-08-05 シュアー アクイジッション ホールディングス インコーポレイテッド 音声およびノイズアクティビティ検出と統合された低レイテンシオートミキサー
CN114467312A (zh) 2019-08-23 2022-05-10 舒尔获得控股公司 具有改进方向性的二维麦克风阵列
US10904657B1 (en) * 2019-10-11 2021-01-26 Plantronics, Inc. Second-order gradient microphone system with baffles for teleconferencing
US12028678B2 (en) 2019-11-01 2024-07-02 Shure Acquisition Holdings, Inc. Proximity microphone
US11552611B2 (en) 2020-02-07 2023-01-10 Shure Acquisition Holdings, Inc. System and method for automatic adjustment of reference gain
USD944776S1 (en) 2020-05-05 2022-03-01 Shure Acquisition Holdings, Inc. Audio device
WO2021243368A2 (fr) 2020-05-29 2021-12-02 Shure Acquisition Holdings, Inc. Systèmes et procédés d'orientation et de configuration de transducteurs utilisant un système de positionnement local
WO2022165007A1 (fr) 2021-01-28 2022-08-04 Shure Acquisition Holdings, Inc. Système de mise en forme hybride de faisceaux audio
USD975688S1 (en) * 2021-09-01 2023-01-17 Shenzhen Vtop Electronic Co. Limited USB conference microphone

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GB1102020A (en) * 1965-08-26 1968-02-07 Peter Heaton Improvements relating to digital telephone systems
GB1329575A (en) * 1970-01-26 1973-09-12 Reid A A L Group communication apparatus
US3882276A (en) * 1974-03-22 1975-05-06 Bell Telephone Labor Inc Conferencing system utilizing oppositely phased hybrids
US3944736A (en) * 1974-06-05 1976-03-16 General Electric Company Voice-operated switching circuit for a video communications system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0041902A1 (fr) * 1980-06-11 1981-12-16 André Faye Procédé et dispositif pour établir des communications bidirectionnelles et/ou multidirectionnelles entre différentes personnes regroupées en différentes stations géographiquement éloignées et reliées entre elles par des lignes téléphoniques
FR2484747A1 (fr) * 1980-06-11 1981-12-18 Faye Andre Procede et dispositif pour etablir des communications bidirectionnelles et/ou multidirectionnelles entre differentes personnes regroupees en differentes stations geographiquement eloignees et reliees entre elles par des lignes telephoniques
US4805205A (en) * 1980-06-11 1989-02-14 Andre Faye Method and device for establishing bidirectional communications between persons located at different geographically distant stations
FR2536615A1 (fr) * 1982-11-18 1984-05-25 Western Electric Co Dispositif de commutation vocale pour un systeme de conference telephonique
FR2580882A1 (fr) * 1985-04-19 1986-10-24 Shure Bros Dispositif de commande d'activation de microphones pour des systemes de teleconference

Also Published As

Publication number Publication date
US4184048A (en) 1980-01-15
FR2390864B1 (fr) 1982-03-12
DE2819981A1 (de) 1978-11-16
NL7804996A (fr) 1978-11-13
DE2819981C2 (de) 1982-06-03
IT7884119A0 (it) 1978-05-09
IT1107405B (it) 1985-11-25
CH630208A5 (fr) 1982-05-28
CA1093719A (fr) 1981-01-13
BE866872A (fr) 1978-09-01

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Legal Events

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TP Transmission of property
ST Notification of lapse