DE815356C - Sprechanlage - Google Patents
SprechanlageInfo
- Publication number
- DE815356C DE815356C DEP26174A DEP0026174A DE815356C DE 815356 C DE815356 C DE 815356C DE P26174 A DEP26174 A DE P26174A DE P0026174 A DEP0026174 A DE P0026174A DE 815356 C DE815356 C DE 815356C
- Authority
- DE
- Germany
- Prior art keywords
- amplifier
- transmitter
- microphone
- microphones
- input circuit
- 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
Links
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000004804 winding Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/001—Two-way communication systems between a limited number of parties
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Transmitters (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL654830X | 1947-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE815356C true DE815356C (de) | 1951-10-01 |
Family
ID=19795188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEP26174A Expired DE815356C (de) | 1947-12-23 | 1948-12-23 | Sprechanlage |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2616973A (en:Method) |
| BE (1) | BE486466A (en:Method) |
| DE (1) | DE815356C (en:Method) |
| FR (1) | FR977934A (en:Method) |
| GB (1) | GB654830A (en:Method) |
| NL (1) | NL78620C (en:Method) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3156909A (en) * | 1962-07-03 | 1964-11-10 | Mccune Electronics Inc | Burglar alarm and monitoring system |
| US3513465A (en) * | 1966-08-24 | 1970-05-19 | Henry W Titherington | Sound monitoring system having plural selectively disconnectable microphones and a central monitoring station |
| US3748397A (en) * | 1972-05-10 | 1973-07-24 | C Jones | Portable remote broadcasting telephone system |
| JPS56143751A (en) * | 1980-04-09 | 1981-11-09 | Clarion Co Ltd | Transceiver with interphone |
| US5809402A (en) * | 1992-10-07 | 1998-09-15 | The Boeing Company | ACARS/VHF transceiver interface unit (AVIU) |
| EP0764370B1 (en) * | 1994-06-08 | 2002-08-28 | The Boeing Company | Transceiver interface unit for aircraft communication |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2182632A (en) * | 1939-12-05 | Communication recording system | ||
| US2077552A (en) * | 1933-09-20 | 1937-04-20 | Bishop & Babcock Mfg Co | Radio signaling system and apparatus |
| US2164960A (en) * | 1937-02-27 | 1939-07-04 | Int Standard Electric Corp | Combined radio receiving and intercommunication system |
| US2433413A (en) * | 1944-02-21 | 1947-12-30 | Internat Marine Radio Company | Combined radio transmitter and loud-speaker installation |
-
0
- BE BE486466D patent/BE486466A/xx unknown
- NL NL78620D patent/NL78620C/xx active
-
1948
- 1948-10-19 US US55268A patent/US2616973A/en not_active Expired - Lifetime
- 1948-12-20 GB GB32856/48A patent/GB654830A/en not_active Expired
- 1948-12-21 FR FR977934D patent/FR977934A/fr not_active Expired
- 1948-12-23 DE DEP26174A patent/DE815356C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR977934A (fr) | 1951-04-06 |
| NL78620C (en:Method) | |
| GB654830A (en) | 1951-06-27 |
| BE486466A (en:Method) | |
| US2616973A (en) | 1952-11-04 |
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