GB887571A - Device for the radiation of sound waves - Google Patents
Device for the radiation of sound wavesInfo
- Publication number
- GB887571A GB887571A GB3813559A GB3813559A GB887571A GB 887571 A GB887571 A GB 887571A GB 3813559 A GB3813559 A GB 3813559A GB 3813559 A GB3813559 A GB 3813559A GB 887571 A GB887571 A GB 887571A
- Authority
- GB
- United Kingdom
- Prior art keywords
- speakers
- loud
- baffle
- plane
- ellipsoid
- 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
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
887,571. Loud-speakers. VAN HEDEL, A. A. W. J. Nov. 10, 1959, No. 38135/59. Class 40 (4). A loud-speaker assembly comprising two loud-speakers 17, 18 has a reflecting surface 4 in the form of part of an ellipsoid, the centres of radiation of the loud-speakers 17, 18 lying on a line passing through the focus F1 of the ellipse formed by an intersection of the ellipsoid with one of its principal planes, and lying at the foci F 1 <SP>1</SP>, F 2 <SP>1</SP> of the ellipse formed by the intersection with the ellipsoid of the plane perpendicular to the principal axis through F 1 . As shown, the reflecting surface 4 has a base member 5 carrying the loud-speakers, the whole being mounted on a baffle 1, so that the focus F 2 complementary to F 1 lies just outside the aperture 2 in the baffle. The reflected waves tend to converge on a line parallel to F 1 <SP>1</SP>, F 2 <SP>1</SP> through F 2 with lateral inversion of the images of the two speakers. The ellipsoidal portion of the reflector terminates at the plane through F 1 <SP>1</SP>, F 2 <SP>1</SP>, F 2 , the portion between this plane and the baffle being plane. Thus the form of the base member 5 is that of half an ellipse together with a rectangle. A further wall 21 and a further aperture 22 in the baffle board may be provided for sound emerging from the rear of the loudspeakers. The speakers may be of the moving- coil type and may or may not have different frequency characteristics. Specification 719,969 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3813559A GB887571A (en) | 1959-11-10 | 1959-11-10 | Device for the radiation of sound waves |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3813559A GB887571A (en) | 1959-11-10 | 1959-11-10 | Device for the radiation of sound waves |
| CH8118559A CH376150A (en) | 1959-11-27 | 1959-11-27 | Device for emitting sound waves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB887571A true GB887571A (en) | 1962-01-17 |
Family
ID=25738530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3813559A Expired GB887571A (en) | 1959-11-10 | 1959-11-10 | Device for the radiation of sound waves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB887571A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012069708A1 (en) * | 2010-11-23 | 2012-05-31 | Daniel Dumay | High fidelty electro-acoustic enclosure and method of manufacture |
| US20230007389A1 (en) * | 2019-12-04 | 2023-01-05 | Sony Group Corporation | Speaker system and sound output method |
| CN115824047A (en) * | 2022-12-06 | 2023-03-21 | 国网四川省电力公司映秀湾水力发电总厂 | Alignment method for geometric center position of machine set component |
-
1959
- 1959-11-10 GB GB3813559A patent/GB887571A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012069708A1 (en) * | 2010-11-23 | 2012-05-31 | Daniel Dumay | High fidelty electro-acoustic enclosure and method of manufacture |
| US9210490B2 (en) | 2010-11-23 | 2015-12-08 | Daniel Dumay | High fidelty electro-acoustic enclosure and method of manufacture |
| US20230007389A1 (en) * | 2019-12-04 | 2023-01-05 | Sony Group Corporation | Speaker system and sound output method |
| US11877121B2 (en) * | 2019-12-04 | 2024-01-16 | Sony Group Corporation | Speaker system and sound output method |
| CN115824047A (en) * | 2022-12-06 | 2023-03-21 | 国网四川省电力公司映秀湾水力发电总厂 | Alignment method for geometric center position of machine set component |
| CN115824047B (en) * | 2022-12-06 | 2023-12-08 | 国网四川省电力公司映秀湾水力发电总厂 | Alignment method for geometrical center position of unit component |
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