DE69032304D1 - Akustisches Gerät - Google Patents
Akustisches GerätInfo
- Publication number
- DE69032304D1 DE69032304D1 DE69032304T DE69032304T DE69032304D1 DE 69032304 D1 DE69032304 D1 DE 69032304D1 DE 69032304 T DE69032304 T DE 69032304T DE 69032304 T DE69032304 T DE 69032304T DE 69032304 D1 DE69032304 D1 DE 69032304D1
- Authority
- DE
- Germany
- Prior art keywords
- acoustic device
- acoustic
- 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 - Fee Related
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1202601A JPH0832113B2 (ja) | 1989-08-04 | 1989-08-04 | 補聴装置 |
JP1202602A JP2542563B2 (ja) | 1989-08-04 | 1989-08-04 | 音響装置 |
JP2107441A JPH046599A (ja) | 1990-04-25 | 1990-04-25 | 音響装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69032304D1 true DE69032304D1 (de) | 1998-06-18 |
DE69032304T2 DE69032304T2 (de) | 1999-02-04 |
Family
ID=27310975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1990632304 Expired - Fee Related DE69032304T2 (de) | 1989-08-04 | 1990-08-03 | Akustisches Gerät |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0411671B1 (de) |
CA (1) | CA2022002C (de) |
DE (1) | DE69032304T2 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014144968A1 (en) | 2013-03-15 | 2014-09-18 | O'polka Richard | Portable sound system |
US10149058B2 (en) | 2013-03-15 | 2018-12-04 | Richard O'Polka | Portable sound system |
US11950049B2 (en) | 2019-05-13 | 2024-04-02 | Sony Group Corporation | Acoustic reflector, speaker unit, and chair |
CN114991327B (zh) * | 2022-06-30 | 2023-04-14 | 中国矿业大学 | 隔声降噪装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1782801A (en) * | 1929-02-16 | 1930-11-25 | Baehn Frederick | Radio loud-speaker |
US2643727A (en) * | 1950-01-31 | 1953-06-30 | Elipson S A | Sound transmitting device with an ellipsoidal reflector |
DE2508494A1 (de) * | 1975-02-27 | 1976-09-02 | Hansrichard Dipl Phys D Schulz | Anordnung zum fokussieren von elektromagnetischen oder mechanischen wellen |
US4151584A (en) * | 1977-03-14 | 1979-04-24 | Electro Controls Inc. | Light-collecting reflector |
US4421200A (en) * | 1981-12-16 | 1983-12-20 | Ferralli Michael W | Elliptically shaped transducer enclosure |
-
1990
- 1990-07-26 CA CA 2022002 patent/CA2022002C/en not_active Expired - Fee Related
- 1990-08-03 DE DE1990632304 patent/DE69032304T2/de not_active Expired - Fee Related
- 1990-08-03 EP EP19900115030 patent/EP0411671B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0411671B1 (de) | 1998-05-13 |
DE69032304T2 (de) | 1999-02-04 |
CA2022002A1 (en) | 1991-02-05 |
EP0411671A3 (en) | 1991-10-09 |
EP0411671A2 (de) | 1991-02-06 |
CA2022002C (en) | 1999-10-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |