GB465441A - Sound reproducing apparatus - Google Patents
Sound reproducing apparatusInfo
- Publication number
- GB465441A GB465441A GB16445/36A GB1644536A GB465441A GB 465441 A GB465441 A GB 465441A GB 16445/36 A GB16445/36 A GB 16445/36A GB 1644536 A GB1644536 A GB 1644536A GB 465441 A GB465441 A GB 465441A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- cabinet
- loud
- damping
- tuned
- 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
- 238000013016 damping Methods 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 2
- 238000010276 construction Methods 0.000 abstract 1
- 230000003292 diminished effect Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 239000011088 parchment paper Substances 0.000 abstract 1
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
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
- H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers
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)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
465,441. Loud - speakers ; cabinets. PHILCO RADIO & TELEVISION CORPORATION. June 12, 1936, No. 16445. Convention date, June 17, 1935. [Class 40 (iv.)] [Also in Group XL] In a loud-speaker cabinet or like soundreproducing apparatus, cabinet resonance at particular frequencies is diminished by the provision of one or more substantially freely movable tuned diaphragms, which are responsive to the frequencies it is desired to suppress and are mounted so as to be subject to considerable damping. In the construction shown in Fig. 2, three such sound-absorbing units 3, 3a are supported on the front wall 1 of a cabinet around a loud-speaker unit 2. Each unit 3, 3a comprises a tuned conical diaphragm 5 of parchment paper or the like secured at its apex to a disc 10 which in turn is fixed to a damping strip 6 of rubber or similar material. The strip 6 and the outer rim of the diaphragm 5 are attached to a supporting frame 4, the diaphragm for this purpose preferably being formed with integral corrugations 15 and an annular mounting ring 14, while the support 4 is itself mounted in an opening in the cabinet wall. In a modification, Fig. 6, the diaphragm 5 is connected by a rod 21 to a plate 20 located between layers 6a of felt or like damping material.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US27097A US2059929A (en) | 1935-06-17 | 1935-06-17 | Sound reproducing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB465441A true GB465441A (en) | 1937-05-07 |
Family
ID=21835660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16445/36A Expired GB465441A (en) | 1935-06-17 | 1936-06-12 | Sound reproducing apparatus |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2059929A (en) |
| GB (1) | GB465441A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2491674A (en) * | 1948-11-12 | 1949-12-20 | Markowitz Jerome | Rotatable loud-speaker support with associated stationary baffle |
| US3022377A (en) * | 1956-10-29 | 1962-02-20 | Philco Corp | Sound reproducing system |
| US3080785A (en) * | 1958-08-25 | 1963-03-12 | Atuk Corp | Electroacoustic tone modifying systems for stringed musical instruments |
| US3082839A (en) * | 1959-03-27 | 1963-03-26 | Joseph E Whitcas | High-fidelity loudspeaker system |
| US3240289A (en) * | 1963-10-25 | 1966-03-15 | Sony Corp | Sound system |
| CA938561A (en) * | 1972-08-14 | 1973-12-18 | J. Prince Gilles | Acoustic loading system |
| US4657107A (en) * | 1986-02-18 | 1987-04-14 | Harwood Warren S | Loudspeaker cabinet |
-
1935
- 1935-06-17 US US27097A patent/US2059929A/en not_active Expired - Lifetime
-
1936
- 1936-06-12 GB GB16445/36A patent/GB465441A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2059929A (en) | 1936-11-03 |
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