GB928377A - Improvements in or relating to sound reproducing devices comprising the combination of a conical loudspeaker and a reflector - Google Patents
Improvements in or relating to sound reproducing devices comprising the combination of a conical loudspeaker and a reflectorInfo
- Publication number
- GB928377A GB928377A GB242160A GB242160A GB928377A GB 928377 A GB928377 A GB 928377A GB 242160 A GB242160 A GB 242160A GB 242160 A GB242160 A GB 242160A GB 928377 A GB928377 A GB 928377A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reflector
- aperture
- angle
- relating
- combination
- 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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/20—Reflecting arrangements
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
928,377. Loud-speakers. PHILIPS ELECTRICAL INDUSTRIES Ltd. Jan. 22, 1960 [Jan. 27, 1959], No. 2427/60. Class 40 (4). [Also in Group XXXVIII] In a loud-speaker arrangement particularly for use in stereophonic reproduction, the loudspeaker 1 is placed below a reflector 2 with its vertical axis 4 passing through the focus of the reflector which is formed by rotating a portion of a parabola about a vertical axis, this giving rise to a convex horizontal cross-section gradually decreasing in width from top to bottom (Fig. 4). This results in a reflected beam having an angle of aperture # in the vertical sense smaller than the incident beam's angle of aperture 2 (Fig. 1) for all frequencies, especially those above 1100 c/s. The angle of aperture of the reflected beam, in the horizontal sense, is larger than α.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL235517 | 1959-01-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB928377A true GB928377A (en) | 1963-06-12 |
Family
ID=19751538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB242160A Expired GB928377A (en) | 1959-01-27 | 1960-01-22 | Improvements in or relating to sound reproducing devices comprising the combination of a conical loudspeaker and a reflector |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT225255B (en) |
| BE (1) | BE586902A (en) |
| CH (1) | CH400240A (en) |
| DE (1) | DE1133759B (en) |
| FR (1) | FR1246066A (en) |
| GB (1) | GB928377A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986001670A1 (en) * | 1984-08-28 | 1986-03-13 | Matsushita Electric Industrial Co., Ltd. | Directional speaker system |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2823157B2 (en) * | 1986-04-01 | 1998-11-11 | キヤノン株式会社 | Audio output system |
| US4836329A (en) * | 1987-07-21 | 1989-06-06 | Hughes Aircraft Company | Loudspeaker system with wide dispersion baffle |
| US5784468A (en) * | 1996-10-07 | 1998-07-21 | Srs Labs, Inc. | Spatial enhancement speaker systems and methods for spatially enhanced sound reproduction |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT177166B (en) * | 1951-10-12 | 1954-01-11 | Ver Telephon Czeija Nissl & Co | Loudspeaker housings, in particular for wall loudspeakers |
-
1960
- 1960-01-22 GB GB242160A patent/GB928377A/en not_active Expired
- 1960-01-23 DE DEN17794A patent/DE1133759B/en active Pending
- 1960-01-25 BE BE586902A patent/BE586902A/en unknown
- 1960-01-25 AT AT50960A patent/AT225255B/en active
- 1960-01-25 CH CH77360A patent/CH400240A/en unknown
- 1960-01-26 FR FR816731A patent/FR1246066A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986001670A1 (en) * | 1984-08-28 | 1986-03-13 | Matsushita Electric Industrial Co., Ltd. | Directional speaker system |
Also Published As
| Publication number | Publication date |
|---|---|
| CH400240A (en) | 1965-10-15 |
| FR1246066A (en) | 1960-11-10 |
| AT225255B (en) | 1963-01-10 |
| BE586902A (en) | 1960-07-25 |
| DE1133759B (en) | 1962-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1521304A (en) | Hi-fi loudspeaker arrangement | |
| ES458637A1 (en) | Optical scanning device | |
| GB928377A (en) | Improvements in or relating to sound reproducing devices comprising the combination of a conical loudspeaker and a reflector | |
| GB891014A (en) | Improvements in or relating to sterepohonic sound reproducing apparatus | |
| GB735402A (en) | Improvements in or relating to television receivers | |
| JPS553232A (en) | Speaker unit | |
| JPS53120401A (en) | Sound reproducing system | |
| GB978781A (en) | Improvements in or relating to sound reproducing apparatus | |
| GB1303602A (en) | ||
| GB1248121A (en) | Diaphragms for loudspeakers | |
| GB887571A (en) | Device for the radiation of sound waves | |
| CN216086923U (en) | Integrated coaxial loudspeaker with certain high pitch and middle and low pitch | |
| GB830745A (en) | Improvements in or relating to loud-speaker assemblies | |
| JPS56125189A (en) | Speaker system | |
| JPS5546650A (en) | Coaxial speaker | |
| GB847144A (en) | Improvements in or relating to loudspeakers | |
| JPS5221802A (en) | Three dimensional space sound reproduction system | |
| GB479549A (en) | Improvements in loud speaker arrangements for public address systems | |
| GB611329A (en) | Improvements in or relating to acoustic instruments such as loud speakers and directional microphones | |
| ES222700A1 (en) | Stereo sound production system (Machine-translation by Google Translate, not legally binding) | |
| FR2366767A1 (en) | Loudspeaker enclosure with reflex baffle - has ellipsoidal shape reflex baffle with focal point at loudspeaker coil and vent opening at other focal point | |
| GB830020A (en) | Improvements in or relating to sound reproducing devices | |
| JPS579198A (en) | Speaker | |
| ES251930A1 (en) | Installation of loudspeakers to alternatively reject programs with bican or monocanal procedure (Machine-translation by Google Translate, not legally binding) | |
| GB851696A (en) | Improvements in or relating to the mounting of loud speakers |