GB1270032A - Loudspeaker - Google Patents
LoudspeakerInfo
- Publication number
- GB1270032A GB1270032A GB23875/69A GB2387569A GB1270032A GB 1270032 A GB1270032 A GB 1270032A GB 23875/69 A GB23875/69 A GB 23875/69A GB 2387569 A GB2387569 A GB 2387569A GB 1270032 A GB1270032 A GB 1270032A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- soft material
- periphery
- foamed
- total weight
- 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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/26—Damping by means acting directly on free portion of diaphragm or cone
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/201—Damping aspects of the outer suspension of loudspeaker diaphragms by addition of additional damping means
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
1,270,032. Diaphragms; moving coil loudspeakers. NIPPON GAKKI SEIZO K.K. 9 May, 1969 [19 Nov., 1968 (2)], No. 23875/69. Addition to 1,270,033. Heading H4J. A loudspeaker includes a rigid self-supporting diaphragm 91 (Fig. 1) of foamed plastics material secured at its periphery to a speaker frame 92 to generate sound by bending motion. Soft material 97 (e.g. foamed or unfoamed rubber or rubber-like material) having a specific gravity in the range 0À10 to 1À25 is applied, the diaphragm 9 at the periphery and has sufficient mass to prevent harmonics of the resonant frequency of the diaphragm 91 from being developed in the frequency range of about 70 to 150 Hz. The soft material 97 has an inner periphery of serrated form as shown or of sinuous form, or has a tapered surface of gradually decreasing thickness towards the centre of the diaphragm. The diaphragm may be of asymmetric shape. The diaphragm is preferably of foamed polystyrene of specific gravity 0À02 to 0À20. The total weight of soft material is 20 to 200% of the total weight of the diaphragm e.g. 100%.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10041968U JPS4740504Y1 (en) | 1968-11-19 | 1968-11-19 | |
JP10042068 | 1968-11-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1270032A true GB1270032A (en) | 1972-04-12 |
Family
ID=26441451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB23875/69A Expired GB1270032A (en) | 1968-11-19 | 1969-05-09 | Loudspeaker |
Country Status (3)
Country | Link |
---|---|
US (1) | US3603427A (en) |
DE (1) | DE1923769A1 (en) |
GB (1) | GB1270032A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2297454B (en) * | 1993-10-04 | 1997-11-12 | Vifa Speak As | Loudspeaker |
GB2349034A (en) * | 1999-04-16 | 2000-10-18 | Hosiden Besson Ltd | Supporting surround for active panel of distributed mode speaker |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2500397C2 (en) * | 1975-01-07 | 1986-05-28 | Schorlemer, Frhr. von, Reinfried, Dipl.-Phys., 3500 Kassel | Membrane for an electroacoustic transducer system and an electroacoustic transducer system equipped with it |
US3976848A (en) * | 1975-08-21 | 1976-08-24 | Estes Roger Q | Disposable noise reducing hearing aid attachment |
US4191865A (en) * | 1978-10-12 | 1980-03-04 | Essex Group, Inc. | Loudspeaker padring and method of making the same |
US4323737A (en) * | 1979-06-30 | 1982-04-06 | Pioneer Electronic Corporation | Driver unit for planar diaphragm type loudspeaker |
NL7908896A (en) * | 1979-12-11 | 1981-07-01 | Philips Nv | A MECHANICAL FILTER FOR AN ELECTRODYNAMIC CONVERTER. |
US4319098A (en) * | 1980-04-30 | 1982-03-09 | Motorola, Inc. | Loudspeaker having a unitary mechanical-acoustic diaphragm termination |
US4466505A (en) * | 1982-04-19 | 1984-08-21 | Temporal Dynamics Research, Inc. | Sound reproducing combination |
US4598789A (en) * | 1982-04-19 | 1986-07-08 | Temporal Dynamics Research, Inc. | Sound reproducing |
CA2336072A1 (en) | 1998-06-22 | 1999-12-29 | Slab Technology Limited | Loudspeakers |
US6321868B1 (en) * | 1999-06-23 | 2001-11-27 | Asulab S.A. | Watertight apparatus capable of being immersed and including an acoustic transducer |
US7155021B2 (en) * | 2000-05-08 | 2006-12-26 | Koninklijke Philips Electronics N.V. | Loudspeaker having an acoustic panel and an electrical driver |
EP2417776A1 (en) * | 2009-04-10 | 2012-02-15 | Immerz Inc. | Systems and methods for acousto-haptic speakers |
DE102012205230A1 (en) * | 2012-03-30 | 2013-10-02 | Sennheiser Electronic Gmbh & Co. Kg | Microphone with a microphone capsule, dynamic sounder for headphones, earphones or headsets and method for making a microphone capsule or a sounder |
KR102503134B1 (en) * | 2015-02-05 | 2023-02-24 | 이글 어코스틱스 매뉴팩쳐링, 엘엘씨 | Integrated voice coil and cone assembly and method of manufacturing the same |
EP3300390A1 (en) * | 2016-09-27 | 2018-03-28 | Sound Solutions International Co., Ltd. | Dynamic loudspeaker driver, loudspeaker and mobile device comprising a loudspeaker |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3308904A (en) * | 1967-03-14 | Kelly loudspeakers | ||
USRE24141E (en) * | 1952-10-25 | 1956-04-10 | Method of making the same | |
US2815823A (en) * | 1953-03-02 | 1957-12-10 | Rca Corp | Loudspeaker structure |
US2863520A (en) * | 1955-03-11 | 1958-12-09 | Gen Dynamics Corp | Loudspeaker cone rim treatment |
BE626876A (en) * | 1962-01-15 | |||
US3247925A (en) * | 1962-03-08 | 1966-04-26 | Lord Corp | Loudspeaker |
-
1969
- 1969-05-05 US US821803A patent/US3603427A/en not_active Expired - Lifetime
- 1969-05-09 DE DE19691923769 patent/DE1923769A1/en active Pending
- 1969-05-09 GB GB23875/69A patent/GB1270032A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2297454B (en) * | 1993-10-04 | 1997-11-12 | Vifa Speak As | Loudspeaker |
GB2349034A (en) * | 1999-04-16 | 2000-10-18 | Hosiden Besson Ltd | Supporting surround for active panel of distributed mode speaker |
Also Published As
Publication number | Publication date |
---|---|
US3603427A (en) | 1971-09-07 |
DE1923769A1 (en) | 1970-06-25 |
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