GB304313A - Improvements relating to the amplification and diffusion of sounds - Google Patents
Improvements relating to the amplification and diffusion of soundsInfo
- Publication number
- GB304313A GB304313A GB38564/28A GB3856428A GB304313A GB 304313 A GB304313 A GB 304313A GB 38564/28 A GB38564/28 A GB 38564/28A GB 3856428 A GB3856428 A GB 3856428A GB 304313 A GB304313 A GB 304313A
- Authority
- GB
- United Kingdom
- Prior art keywords
- horn
- ceiling
- room
- cornice
- floor
- 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)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
304,313. Ephraim, A. F. Jan. 20, 1928, [Convention date]. Horns, arranging and supporting.-The sound from loud speakers, gramophones or the like is diffused within a room. by means of a horn having three surfaces terminating in edges arranged at or near two walls and the ceiling or floor, each edge being substantially parallel to, or in the plane of, the corresponding wall, ceiling or floor. The horn a of the loud speaker shown in Fig. 4 has flattened surfaces a<1> at the back to fit into a corner and a.n inclined or arched surface a<2> at the top reaching to the, ceiling. The horn may be constructed of layers of thick paper or thin card which are not stuck together. Fig. 8 shows a horn modified for a room having a cornice. Inclined facets a<4> are provided at the sides of the arched part a<2> to fit against the cornice, and a tongue a<5> is provided at the front. In concert rooms and like auditoriums one end of the room may be constituted by a largei funnel- Lke structure j<2>, Fig. 1, having the loud speaker a at the apex. The Specification as open to inspection under Sect. 91 (3) (a) also comprises the more simple construction shown in Fig. 12 (Cancelled), applied to a gramophone. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR304313X | 1928-01-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB304313A true GB304313A (en) | 1930-06-30 |
Family
ID=8888782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB38564/28A Expired GB304313A (en) | 1928-01-20 | 1928-12-31 | Improvements relating to the amplification and diffusion of sounds |
Country Status (3)
Country | Link |
---|---|
US (1) | US1962300A (en) |
BE (1) | BE357449A (en) |
GB (1) | GB304313A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2239570A (en) * | 1989-12-20 | 1991-07-03 | * Wild Michael | Bath tub radio |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2878887A (en) * | 1955-11-29 | 1959-03-24 | Wisconsin Alumni Res Found | Acoustical device |
NL1019961C2 (en) * | 2002-02-14 | 2003-08-15 | Duran Audio B V | Acoustic reproducer. |
-
0
- BE BE357449D patent/BE357449A/xx unknown
-
1928
- 1928-12-31 GB GB38564/28A patent/GB304313A/en not_active Expired
-
1929
- 1929-01-14 US US332479A patent/US1962300A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2239570A (en) * | 1989-12-20 | 1991-07-03 | * Wild Michael | Bath tub radio |
Also Published As
Publication number | Publication date |
---|---|
BE357449A (en) | |
US1962300A (en) | 1934-06-12 |
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