GB2174268B - Microphone actuation control system suitable for teleconference systems - Google Patents

Microphone actuation control system suitable for teleconference systems

Info

Publication number
GB2174268B
GB2174268B GB8606874A GB8606874A GB2174268B GB 2174268 B GB2174268 B GB 2174268B GB 8606874 A GB8606874 A GB 8606874A GB 8606874 A GB8606874 A GB 8606874A GB 2174268 B GB2174268 B GB 2174268B
Authority
GB
United Kingdom
Prior art keywords
control system
system suitable
actuation control
teleconference systems
microphone
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.)
Expired
Application number
GB8606874A
Other versions
GB2174268A (en
GB8606874D0 (en
Inventor
Stephen D Julstrom
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.)
Shure Inc
Original Assignee
Shure Brothers 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 Shure Brothers Inc filed Critical Shure Brothers Inc
Publication of GB8606874D0 publication Critical patent/GB8606874D0/en
Publication of GB2174268A publication Critical patent/GB2174268A/en
Application granted granted Critical
Publication of GB2174268B publication Critical patent/GB2174268B/en
Expired 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/326—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
    • H04R2201/401—2D or 3D arrays of transducers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Circuit For Audible Band Transducer (AREA)
GB8606874A 1985-04-19 1986-03-20 Microphone actuation control system suitable for teleconference systems Expired GB2174268B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72530285A 1985-04-19 1985-04-19

Publications (3)

Publication Number Publication Date
GB8606874D0 GB8606874D0 (en) 1986-04-23
GB2174268A GB2174268A (en) 1986-10-29
GB2174268B true GB2174268B (en) 1989-12-06

Family

ID=24913986

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8606874A Expired GB2174268B (en) 1985-04-19 1986-03-20 Microphone actuation control system suitable for teleconference systems

Country Status (7)

Country Link
JP (1) JPS61242499A (en)
AT (2) AT388480B (en)
CA (1) CA1256036A (en)
DE (1) DE3612708A1 (en)
FR (1) FR2580882B1 (en)
GB (1) GB2174268B (en)
NL (1) NL193041C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11039260B2 (en) 2019-09-19 2021-06-15 Jerry Mirsky Communication system for controlling the sequence and duration of speeches at public debates

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0271948A3 (en) * 1986-12-16 1989-05-03 Alcatel N.V. Telecommunication circuit
DE3734447C1 (en) * 1987-10-12 1989-05-18 Telefonbau & Normalzeit Gmbh Conference speakerphone
DE69224680T2 (en) * 1991-05-29 1998-09-17 Koninkl Philips Electronics Nv Electroacoustic amplifier arrangement and microphone arrangement for use in the electroacoustic amplifier arrangement
KR100233166B1 (en) * 1997-07-04 1999-12-01 윤종용 Handfree device having multi-mike and control method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3751602A (en) * 1971-08-13 1973-08-07 Bell Telephone Labor Inc Loudspeaking telephone
JPS4933601A (en) * 1972-07-24 1974-03-28
US4008376A (en) * 1975-10-17 1977-02-15 Bell Telephone Laboratories, Incorporated Loudspeaking teleconferencing circuit
US4090032A (en) * 1976-05-05 1978-05-16 Wm. A. Holmin Corporation Control system for audio amplifying system having multiple microphones
CA1050154A (en) * 1977-01-14 1979-03-06 Conrad D. Lafrance Telephone conferencing apparatus
FR2390864A1 (en) * 1977-05-09 1978-12-08 France Etat AUDIOCONFERENCE SYSTEM BY TELEPHONE LINK
US4359602A (en) * 1979-01-17 1982-11-16 Ponto Robert A Multiple input audio program system
US4449238A (en) * 1982-03-25 1984-05-15 Bell Telephone Laboratories, Incorporated Voice-actuated switching system
JPS5977710A (en) * 1982-10-02 1984-05-04 Fujitsu Ltd Microphone amplifier circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11039260B2 (en) 2019-09-19 2021-06-15 Jerry Mirsky Communication system for controlling the sequence and duration of speeches at public debates

Also Published As

Publication number Publication date
NL193041B (en) 1998-04-01
NL8600996A (en) 1986-11-17
GB2174268A (en) 1986-10-29
GB8606874D0 (en) 1986-04-23
CA1263608C (en) 1989-12-05
AT388480B (en) 1989-06-26
JPS61242499A (en) 1986-10-28
FR2580882B1 (en) 1993-12-10
DE3612708A1 (en) 1986-10-23
ATA103086A (en) 1988-11-15
NL193041C (en) 1998-08-04
AT389202B (en) 1989-11-10
FR2580882A1 (en) 1986-10-24
CA1256036A (en) 1989-06-20
ATA172888A (en) 1989-03-15

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20060319