BE506590A - - Google Patents
Info
- Publication number
- BE506590A BE506590A BE506590DA BE506590A BE 506590 A BE506590 A BE 506590A BE 506590D A BE506590D A BE 506590DA BE 506590 A BE506590 A BE 506590A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/24—Inductive coupling
- H04B5/26—Inductive coupling using coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
-
- 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
- H04R27/02—Amplifying systems for the deaf
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB19748/49A GB674753A (en) | 1949-07-27 | 1949-07-27 | Improvements relating to sound-reproducing systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE506590A true BE506590A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) |
Family
ID=10134543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE506590D BE506590A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) | 1949-07-27 |
Country Status (4)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0296092A3 (en) * | 1987-06-19 | 1989-08-16 | George Geladakis | Arrangement for wireless earphones without batteries and electronic circuits, applicable in audio-systems or audio-visual systems of all kinds |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102474683B (zh) | 2009-08-03 | 2016-10-12 | 图象公司 | 用于监视电影院扬声器以及对质量问题进行补偿的系统和方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB498468A (en) * | 1937-07-05 | 1939-01-05 | Joseph Poliakoff | Improved method of and apparatus for the transmission of speech and other sounds |
-
0
- BE BE506590D patent/BE506590A/xx unknown
-
1949
- 1949-07-27 GB GB19748/49A patent/GB674753A/en not_active Expired
-
1950
- 1950-07-25 FR FR1022470D patent/FR1022470A/fr not_active Expired
- 1950-08-22 DE DEF2473A patent/DE969603C/de not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0296092A3 (en) * | 1987-06-19 | 1989-08-16 | George Geladakis | Arrangement for wireless earphones without batteries and electronic circuits, applicable in audio-systems or audio-visual systems of all kinds |
Also Published As
| Publication number | Publication date |
|---|---|
| DE969603C (de) | 1958-06-26 |
| GB674753A (en) | 1952-07-02 |
| FR1022470A (fr) | 1953-03-05 |