IT7821471A0 - Disposizione circuitale per un apparecchio telefonico dotato di altoparlante e comandato dalla voce. - Google Patents

Disposizione circuitale per un apparecchio telefonico dotato di altoparlante e comandato dalla voce.

Info

Publication number
IT7821471A0
IT7821471A0 IT7821471A IT2147178A IT7821471A0 IT 7821471 A0 IT7821471 A0 IT 7821471A0 IT 7821471 A IT7821471 A IT 7821471A IT 2147178 A IT2147178 A IT 2147178A IT 7821471 A0 IT7821471 A0 IT 7821471A0
Authority
IT
Italy
Prior art keywords
speaker
voice
controlled
circuit arrangement
telephone set
Prior art date
Application number
IT7821471A
Other languages
English (en)
Other versions
IT1093691B (it
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of IT7821471A0 publication Critical patent/IT7821471A0/it
Application granted granted Critical
Publication of IT1093691B publication Critical patent/IT1093691B/it

Links

Classifications

    • 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
    • H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Circuit For Audible Band Transducer (AREA)
IT21471/78A 1977-03-30 1978-03-22 Disposizione circuitale per un apparecchio telefonico dotato di altoparlante e comandato dalla voce IT1093691B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2714132A DE2714132C3 (de) 1977-03-30 1977-03-30 Schaltungsanordnung für ein sprachgesteuertes Lautfernsprechgerät

Publications (2)

Publication Number Publication Date
IT7821471A0 true IT7821471A0 (it) 1978-03-22
IT1093691B IT1093691B (it) 1985-07-26

Family

ID=6005133

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21471/78A IT1093691B (it) 1977-03-30 1978-03-22 Disposizione circuitale per un apparecchio telefonico dotato di altoparlante e comandato dalla voce

Country Status (6)

Country Link
AU (1) AU501638B1 (it)
BE (1) BE865523A (it)
BR (1) BR7801935A (it)
DE (1) DE2714132C3 (it)
FI (1) FI64730C (it)
IT (1) IT1093691B (it)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027343B1 (en) * 1979-10-11 1983-05-11 The Marconi Company Limited A voice detector
DE3148305A1 (de) * 1981-12-03 1983-06-09 Deutsche Telephonwerke Und Kabelindustrie Ag, 1000 Berlin Schaltungsanordnung fuer eine freisprecheinrichtung
DE3332305C2 (de) * 1983-09-07 1987-03-05 Siemens AG, 1000 Berlin und 8000 München Verfahren zur steuerbaren Dämpfung von digitalen Signalen
US4715062A (en) * 1985-03-22 1987-12-22 Tie/Communications, Inc. Speakerphone control circuit having low gain states and method for controlling gain of speakerphone
DE3541794A1 (de) * 1985-11-26 1987-05-27 Siemens Ag Sprachsteuerung in einer fernsprechstation
DE3728109C1 (de) * 1987-08-22 1989-03-16 Telefonbau & Normalzeit Gmbh Verfahren fuer die sprachgesteuerte Daempfungsregelung in Fernsprechuebertragungskreisen
DE3908283C2 (de) * 1989-03-14 1996-04-25 Siemens Ag Steuerung einer sprachgesteuerten Sprechrichtungserkennung
DE3908282A1 (de) * 1989-03-14 1990-09-20 Siemens Ag Sprechrichtungserkennung in einer digitalen fernsprechstation
DE3919345A1 (de) * 1989-06-13 1990-12-20 Siemens Ag Schaltungsanordnung fuer eine optimale daempfungshubregelung bei fernsprechstationen mit freisprechen
DE4012354C2 (de) * 1990-04-18 1995-06-22 Siemens Ag Fernsprechstation mit Freisprechen
DE19525705A1 (de) * 1995-07-14 1997-01-16 Bahram Adniazar Lichtwellenleiter-Telefon-Satz

Also Published As

Publication number Publication date
IT1093691B (it) 1985-07-26
AU501638B1 (en) 1979-06-28
FI64730B (fi) 1983-08-31
DE2714132A1 (de) 1978-10-05
BR7801935A (pt) 1979-05-22
BE865523A (fr) 1978-10-02
DE2714132C3 (de) 1980-02-07
FI780951A (fi) 1978-10-01
DE2714132B2 (de) 1979-06-13
FI64730C (fi) 1983-12-12

Similar Documents

Publication Publication Date Title
PL211751A1 (pl) Zestaw telefoniczny z glosnikiem
IT1070467B (it) Circuito per teleconferenze..utilizzante apparecchi telefonici a viva voce
NL7807905A (nl) Telefoontoestel.
NL7804355A (nl) Automatische telefoonkiesinrichting.
NL187376C (nl) Telefoonspraaknetwerk.
IT7821471A0 (it) Disposizione circuitale per un apparecchio telefonico dotato di altoparlante e comandato dalla voce.
GB2000660B (en) Electronic tone ringer for telephone sets
NL7806549A (nl) Telefoonaanpassingsinrichting.
NL7714174A (nl) Elektronisch netwerk voor een telefoontoestel.
NL7714104A (nl) Telefoonconferentietoestel.
AU512904B2 (en) Subscriber set acoustic call receiving circuit
NL7800842A (nl) Handmicrofoon voor een telefoontoestel.
JPS53114305A (en) Loudspeaking telephone set
HK61379A (en) Telephone microphone
IT1093692B (it) Ricevitore di segnali selettivo in frequenza,protetto da un funzionamento accidentale causato dalla voce
NL7810182A (nl) Telefoonbeantwoorder.
DK74878A (da) Kredsloeb til en frihoejttalertelefon
FR2402976B1 (fr) Telephone avec clavier
JPS53132911A (en) Telephone set
JPS5469307A (en) Loudspeaking telephone set
IT7827591A0 (it) Apparecchi telefonici. suoneria a corrente alternata per
NL7806818A (nl) Telefoontoestel.
JPS53110405A (en) Circuit for preventing side tone for twoowire telephone set
JPS5394805A (en) Communication terminal equipment
RO77227A2 (ro) Tasta telefonica