SE416510B - Telefonapparat for anvendning i ett konferensrum - Google Patents

Telefonapparat for anvendning i ett konferensrum

Info

Publication number
SE416510B
SE416510B SE7800213A SE7800213A SE416510B SE 416510 B SE416510 B SE 416510B SE 7800213 A SE7800213 A SE 7800213A SE 7800213 A SE7800213 A SE 7800213A SE 416510 B SE416510 B SE 416510B
Authority
SE
Sweden
Prior art keywords
microphone
housing
speaker
distance
common axis
Prior art date
Application number
SE7800213A
Other languages
English (en)
Swedish (sv)
Other versions
SE7800213L (sv
Inventor
R Botros
C D Lafrance
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of SE7800213L publication Critical patent/SE7800213L/xx
Publication of SE416510B publication Critical patent/SE416510B/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Telephone Set Structure (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Catalysts (AREA)
SE7800213A 1977-01-14 1978-01-09 Telefonapparat for anvendning i ett konferensrum SE416510B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA269,735A CA1050154A (en) 1977-01-14 1977-01-14 Telephone conferencing apparatus

Publications (2)

Publication Number Publication Date
SE7800213L SE7800213L (sv) 1978-07-15
SE416510B true SE416510B (sv) 1981-01-05

Family

ID=4107730

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7800213A SE416510B (sv) 1977-01-14 1978-01-09 Telefonapparat for anvendning i ett konferensrum

Country Status (12)

Country Link
JP (1) JPS5389606A (xx)
BE (1) BE862702A (xx)
CA (1) CA1050154A (xx)
DE (1) DE2800882C2 (xx)
DK (1) DK5678A (xx)
ES (1) ES465952A1 (xx)
FR (1) FR2377735A1 (xx)
GB (1) GB1587549A (xx)
IT (1) IT1089288B (xx)
NL (1) NL7714104A (xx)
NO (1) NO780126L (xx)
SE (1) SE416510B (xx)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61242499A (ja) * 1985-04-19 1986-10-28 シユア・ブラザ−ズ・インコ−ポレイテツド マイクロホン装置
FR2617660B1 (fr) * 1987-06-30 1990-06-08 Larvor Rene Dispositif de prise et de restitution du son, notamment pour audio-conferences
DE3734447C1 (de) * 1987-10-12 1989-05-18 Telefonbau & Normalzeit Gmbh Konferenz-Freisprecheinrichtung
FR2670351B1 (fr) * 1990-12-05 1997-04-30 France Etat Appareil de prise et de restitution du son.
FR2702918B1 (fr) * 1993-03-19 1995-05-12 Prescom Sarl Appareil de prise et de restitution de son, et son application à l'audio-conférence.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH400245A (de) * 1965-10-02 1965-10-15 Peiker Heinrich Einrichtung zum Gegensprechen

Also Published As

Publication number Publication date
JPS5389606A (en) 1978-08-07
NL7714104A (nl) 1978-07-18
IT1089288B (it) 1985-06-18
ES465952A1 (es) 1978-09-16
DE2800882C2 (de) 1985-02-28
SE7800213L (sv) 1978-07-15
GB1587549A (en) 1981-04-08
BE862702A (fr) 1978-07-06
JPS6133314B2 (xx) 1986-08-01
DK5678A (da) 1978-07-15
FR2377735B3 (xx) 1980-10-24
FR2377735A1 (fr) 1978-08-11
DE2800882A1 (de) 1978-07-20
NO780126L (no) 1978-07-17
CA1050154A (en) 1979-03-06

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