GB257053A - Improvements in or relating to acoustic amplifying, radiating and diffusing means suitable for use with telephonic receivers and other sound producing or reproducing apparatus - Google Patents
Improvements in or relating to acoustic amplifying, radiating and diffusing means suitable for use with telephonic receivers and other sound producing or reproducing apparatusInfo
- Publication number
- GB257053A GB257053A GB1667625A GB1667625A GB257053A GB 257053 A GB257053 A GB 257053A GB 1667625 A GB1667625 A GB 1667625A GB 1667625 A GB1667625 A GB 1667625A GB 257053 A GB257053 A GB 257053A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reflector
- radiating
- relating
- conduit
- reproducing apparatus
- 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)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Telephone Set Structure (AREA)
Abstract
257,053. Graham, E. A. June 29, 1925. Loud-speakers.-A bowl-shaped reflector 1 is provided at one side with a depressed portion 2 on to which sound from a conduit 3 impinges and from which the sound is reflected angularly on to other parts of the reflector, and is there further reflected through the outlet orifice of the bowl. The depressed portion is bounded by flat sides 2<a> so as to form a pocket-like recess. The telephone receiver may be located in a base 5 with the reflector supported on a foot 5a as shown in Fig. 2. or the whole apparatus may be contained in a casing 6, Fig. 3, provided with a door 6a to facilitate adjustment of the receiver. The conduit may pass round the exterior surface of the reflector as shown in Fig. 3, or round the interior of the reflector in a groove therein. Other arrangements are shown in which the conduit and receiver lie behind the reflector. Specifications 15369/15, . 191,801, 233.779, 254,092, 257,996. and 258,346 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1667625A GB257053A (en) | 1925-06-29 | 1925-06-29 | Improvements in or relating to acoustic amplifying, radiating and diffusing means suitable for use with telephonic receivers and other sound producing or reproducing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1667625A GB257053A (en) | 1925-06-29 | 1925-06-29 | Improvements in or relating to acoustic amplifying, radiating and diffusing means suitable for use with telephonic receivers and other sound producing or reproducing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB257053A true GB257053A (en) | 1926-08-26 |
Family
ID=10081620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1667625A Expired GB257053A (en) | 1925-06-29 | 1925-06-29 | Improvements in or relating to acoustic amplifying, radiating and diffusing means suitable for use with telephonic receivers and other sound producing or reproducing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB257053A (en) |
-
1925
- 1925-06-29 GB GB1667625A patent/GB257053A/en not_active Expired
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