SE377025B - - Google Patents
Info
- Publication number
- SE377025B SE377025B SE7300254A SE7300254A SE377025B SE 377025 B SE377025 B SE 377025B SE 7300254 A SE7300254 A SE 7300254A SE 7300254 A SE7300254 A SE 7300254A SE 377025 B SE377025 B SE 377025B
- Authority
- SE
- Sweden
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
- H04R11/00—Transducers of moving-armature or moving-core type
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA132093 | 1972-01-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE377025B true SE377025B (fr) | 1975-06-16 |
Family
ID=4092018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7300254A SE377025B (fr) | 1972-01-10 | 1973-01-09 |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE7300802U (fr) |
| FR (1) | FR2167867B1 (fr) |
| GB (1) | GB1379372A (fr) |
| SE (1) | SE377025B (fr) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1190993C (zh) * | 1997-04-17 | 2005-02-23 | 伯斯有限公司 | 降低有源噪声的头戴送受话器及其中使用的模块 |
| US8571227B2 (en) | 2005-11-11 | 2013-10-29 | Phitek Systems Limited | Noise cancellation earphone |
| NZ584418A (en) | 2007-10-02 | 2012-12-21 | Phitek Systems Ltd | Component for noise reducing earphone |
| US9818394B2 (en) | 2009-11-30 | 2017-11-14 | Graeme Colin Fuller | Realisation of controller transfer function for active noise cancellation |
| US8929082B2 (en) | 2010-05-17 | 2015-01-06 | Thales Avionics, Inc. | Airline passenger seat modular user interface device |
| US9487295B2 (en) | 2010-11-15 | 2016-11-08 | William James Sim | Vehicle media distribution system using optical transmitters |
| JP2014533444A (ja) | 2011-06-01 | 2014-12-11 | フィテック システムズ リミテッドＰｈｉｔｅｋ Ｓｙｓｔｅｍｓ Ｌｉｍｉｔｅｄ | 能動騒音低減を組み込むインイヤー型装置 |
| CN112122088B (zh) * | 2019-06-24 | 2024-06-25 | 苏州嘉辉超声波科技有限公司 | 一种双曲面换能器 |
-
1973
- 1973-01-09 SE SE7300254A patent/SE377025B/xx unknown
- 1973-01-10 GB GB142273A patent/GB1379372A/en not_active Expired
- 1973-01-10 DE DE19737300802 patent/DE7300802U/de not_active Expired
- 1973-01-10 FR FR7300679A patent/FR2167867B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2167867A1 (fr) | 1973-08-24 |
| GB1379372A (en) | 1975-01-02 |
| FR2167867B1 (fr) | 1976-05-14 |
| DE7300802U (de) | 1973-03-29 |