BE631608A - - Google Patents
Info
- Publication number
- BE631608A BE631608A BE631608DA BE631608A BE 631608 A BE631608 A BE 631608A BE 631608D A BE631608D A BE 631608DA BE 631608 A BE631608 A BE 631608A
- Authority
- BE
- Belgium
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
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/225—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only for telephonic receivers
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES79202A DE1188656B (en) | 1962-04-27 | 1962-04-27 | Arrangement for improving the frequency response of an electroacoustic converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE631608A true BE631608A (en) |
Family
ID=7508023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE631608D BE631608A (en) | 1962-04-27 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3246721A (en) |
| BE (1) | BE631608A (en) |
| CH (1) | CH399542A (en) |
| DE (1) | DE1188656B (en) |
| FI (1) | FI42731B (en) |
| GB (1) | GB999378A (en) |
| NL (2) | NL142042B (en) |
| SE (1) | SE318610B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3396241A (en) * | 1964-10-23 | 1968-08-06 | Russell K Anderson | Stethoscope with sound spectrum selection |
| CH528197A (en) * | 1971-12-20 | 1972-09-15 | Ibm | Housing arrangement with an electro-acoustic transducer, and use of the same in a telephone set of a communication system with PCM coding |
| CA1069233A (en) * | 1977-01-18 | 1980-01-01 | Northern Telecom Limited | Telephone hand set transmitter with improved output response |
| DE2948034A1 (en) * | 1979-11-29 | 1981-06-11 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Electroacoustic converter assembly - has loudspeaker mounted inside housing divided into two chambers by PCB |
| JPS6163193A (en) * | 1984-09-04 | 1986-04-01 | Nippon Chemicon Corp | Electroacoustic transducer |
| JPH0450718Y2 (en) * | 1986-02-28 | 1992-11-30 | ||
| US4727583A (en) * | 1986-10-28 | 1988-02-23 | Motorola, Inc. | Telephone transducer with improved frequency response |
| WO1989004106A1 (en) * | 1987-10-28 | 1989-05-05 | Acs Communications, Inc. | Acoustic filter microphone cup |
| US4864611A (en) * | 1987-11-24 | 1989-09-05 | Helmuth Keld T | Telephone handset attachment for use in-the-ear hearing aids |
| US4977975A (en) * | 1989-09-14 | 1990-12-18 | Lazzeroni John J | Vented motorcycle helmet speaker enclosure |
| EP1341395A1 (en) * | 2002-05-24 | 2003-09-03 | Phonak Ag | Hearing device |
| TWI285510B (en) * | 2006-01-10 | 2007-08-11 | Gaiatek Inc | Personal type leads of a sound device |
| US8111854B2 (en) | 2006-11-29 | 2012-02-07 | Yan-Ru Peng | Methods and apparatus for sound production |
| PL2869598T3 (en) * | 2013-10-30 | 2019-01-31 | Svantek Sp. Z O.O. | A device for measuring sound level |
| US10171905B2 (en) * | 2016-02-14 | 2019-01-01 | Transound Electronics Co., Ltd. | Headphones with frequency-targeted resonance chambers |
| US10542337B2 (en) * | 2017-07-18 | 2020-01-21 | Shure Acquisition Holdings, Inc. | Moving coil microphone transducer with secondary port |
| US10623847B2 (en) * | 2018-08-02 | 2020-04-14 | EVA Automation, Inc. | Headphone with multiple acoustic paths |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1854716A (en) * | 1929-01-24 | 1932-04-19 | Herman G Pape | Sound instrument |
| US2327137A (en) * | 1941-05-21 | 1943-08-17 | Sonotone Corp | Hearing aid microphone |
| US2342334A (en) * | 1942-07-11 | 1944-02-22 | Maico Company Inc | Variable baffle for translating devices |
| US2490466A (en) * | 1944-07-19 | 1949-12-06 | Rca Corp | Loudspeaker diaphragm support comprising plural compliant members |
| US2524393A (en) * | 1947-12-06 | 1950-10-03 | E A Myers & Sons | Noise reducing hearing aid case |
| US2585052A (en) * | 1948-04-23 | 1952-02-12 | Int Standard Electric Corp | Granule type acoustic transducer |
| GB698695A (en) * | 1951-01-11 | 1953-10-21 | Lustraphone Ltd | Improvements in or relating to microphones |
| DE1078174B (en) * | 1956-02-25 | 1960-03-24 | Dr Emil Podszus | Suspension for speaker cones with special damping |
-
0
- BE BE631608D patent/BE631608A/xx unknown
- NL NL291745D patent/NL291745A/xx unknown
-
1962
- 1962-04-27 DE DES79202A patent/DE1188656B/en active Pending
-
1963
- 1963-04-16 CH CH473163A patent/CH399542A/en unknown
- 1963-04-19 NL NL63291745A patent/NL142042B/en unknown
- 1963-04-24 US US275808A patent/US3246721A/en not_active Expired - Lifetime
- 1963-04-25 GB GB16277/63A patent/GB999378A/en not_active Expired
- 1963-04-25 SE SE456463A patent/SE318610B/xx unknown
- 1963-04-26 FI FI0829/63A patent/FI42731B/fi active
Also Published As
| Publication number | Publication date |
|---|---|
| NL142042B (en) | 1974-04-16 |
| GB999378A (en) | 1965-07-21 |
| NL291745A (en) | |
| CH399542A (en) | 1965-09-30 |
| SE318610B (en) | 1969-12-15 |
| US3246721A (en) | 1966-04-19 |
| DE1188656B (en) | 1965-03-11 |
| FI42731B (en) | 1970-06-30 |