IT1071242B - Dispositivo per consentire conversazione telefoniche senza l uso del microtelefono - Google Patents
Dispositivo per consentire conversazione telefoniche senza l uso del microtelefonoInfo
- Publication number
- IT1071242B IT1071242B IT6872676A IT6872676A IT1071242B IT 1071242 B IT1071242 B IT 1071242B IT 6872676 A IT6872676 A IT 6872676A IT 6872676 A IT6872676 A IT 6872676A IT 1071242 B IT1071242 B IT 1071242B
- Authority
- IT
- Italy
- Prior art keywords
- microphone
- telephone conversation
- allow telephone
- allow
- conversation
- Prior art date
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)
- Amplifiers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH936475A CH589392A5 (en) | 1975-07-17 | 1975-07-17 | Stabilised telephone amplifier with equaliser - includes two operational amplifiers in summing circuit of equaliser |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1071242B true IT1071242B (it) | 1985-04-02 |
Family
ID=4351206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT6872676A IT1071242B (it) | 1975-07-17 | 1976-07-09 | Dispositivo per consentire conversazione telefoniche senza l uso del microtelefono |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH589392A5 (it) |
IT (1) | IT1071242B (it) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2481550B1 (fr) * | 1980-04-25 | 1985-08-02 | Trt Telecom Radio Electr | Dispositif de protection contre l'effet larsen dans un poste telephonique a haut-parleur |
-
1975
- 1975-07-17 CH CH936475A patent/CH589392A5/xx not_active IP Right Cessation
-
1976
- 1976-07-09 IT IT6872676A patent/IT1071242B/it active
Also Published As
Publication number | Publication date |
---|---|
CH589392A5 (en) | 1977-06-30 |
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