GB695912A - Improvements in or relating to public address and like sound disseminating systems - Google Patents
Improvements in or relating to public address and like sound disseminating systemsInfo
- Publication number
- GB695912A GB695912A GB12844/51A GB1284451A GB695912A GB 695912 A GB695912 A GB 695912A GB 12844/51 A GB12844/51 A GB 12844/51A GB 1284451 A GB1284451 A GB 1284451A GB 695912 A GB695912 A GB 695912A
- Authority
- GB
- United Kingdom
- Prior art keywords
- loudspeakers
- baffle
- sound
- hornless
- public address
- 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
Classifications
-
- 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
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
- H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
695,912. Audible. and like signalling apparatus. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. May 31, 1951 [Oct. 1, 1948], No. 12844/51. Class 118 (ii). A public address or like sound radiating system comprises a' plurality of similar type hornless loudspeakers b all of which are arranged in a straight line along a narrow hornless baffle a with their diaphragms arranged so as to radiate sound through apertures in the baffle and with their axes substantially normal to the baffle, said baffle being disposed so that the line of loudspeakers is substantially vertical whereby sound is radiated mainly horizontally. The relationship between the length of baffle and the reverberation time of an auditorium is discussed. The loudspeakers at the ends of the line may be fed only with the low frequency end of the audioband. Some of the loudspeakers may be boxed in at the back as at c giving a resultant cardioid polar diagram in the horizontal plane. A circular polar diagram may be obtained by placing two of the former systems together such that the longitudinal edges of the baffles are parallel and their surfaces lie in mutally perpendiculai planes; the loudspeakers on the respective baffles may be relatively staggered. Microphones for the system may also be arranged in a vertical stack and various reverberation effects may be obtained by simply switching individual microphones into or out of circuit. U.S.A. Specification 1,874,733 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE695912X | 1948-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB695912A true GB695912A (en) | 1953-08-19 |
Family
ID=6607567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12844/51A Expired GB695912A (en) | 1948-10-01 | 1951-05-31 | Improvements in or relating to public address and like sound disseminating systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB695912A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3179202A (en) * | 1963-04-15 | 1965-04-20 | Argos Products Company Inc | Enclosure for focusing a loudspeaker sound column |
| US4399328A (en) * | 1980-02-25 | 1983-08-16 | U.S. Philips Corporation | Direction and frequency independent column of electro-acoustic transducers |
| WO1989003919A1 (en) * | 1987-10-26 | 1989-05-05 | Naeslund Jan | A device for a meeting-hall |
| WO1996017140A1 (en) * | 1994-11-30 | 1996-06-06 | Naeslund Jan | Sound arrangement |
| NL1023702C2 (en) * | 2003-06-19 | 2004-12-21 | Bosch Security Systems B V | Loudspeaker column for use in large spaces, e.g. stadiums, has specific acoustic length for making sound audible over wider area |
| NL1026038C2 (en) * | 2004-04-26 | 2005-10-27 | Alcons Audio Bv | Loudspeaker and assembly of loudspeakers. |
-
1951
- 1951-05-31 GB GB12844/51A patent/GB695912A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3179202A (en) * | 1963-04-15 | 1965-04-20 | Argos Products Company Inc | Enclosure for focusing a loudspeaker sound column |
| US4399328A (en) * | 1980-02-25 | 1983-08-16 | U.S. Philips Corporation | Direction and frequency independent column of electro-acoustic transducers |
| WO1989003919A1 (en) * | 1987-10-26 | 1989-05-05 | Naeslund Jan | A device for a meeting-hall |
| WO1996017140A1 (en) * | 1994-11-30 | 1996-06-06 | Naeslund Jan | Sound arrangement |
| NL1023702C2 (en) * | 2003-06-19 | 2004-12-21 | Bosch Security Systems B V | Loudspeaker column for use in large spaces, e.g. stadiums, has specific acoustic length for making sound audible over wider area |
| NL1026038C2 (en) * | 2004-04-26 | 2005-10-27 | Alcons Audio Bv | Loudspeaker and assembly of loudspeakers. |
| WO2005104613A1 (en) * | 2004-04-26 | 2005-11-03 | Alcons Audio B.V. | Loudspeaker and assembly of loudspeakers |
| EA010071B1 (en) * | 2004-04-26 | 2008-06-30 | Элконс Аудио Б.В. | Loudspeaker and assembly of loudspeakers |
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