BE720115A - - Google Patents
Info
- Publication number
- BE720115A BE720115A BE720115DA BE720115A BE 720115 A BE720115 A BE 720115A BE 720115D A BE720115D A BE 720115DA BE 720115 A BE720115 A BE 720115A
- 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
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE720115 | 1968-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE720115A true BE720115A (th) | 1969-02-03 |
Family
ID=3853448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE720115D BE720115A (th) | 1968-08-29 | 1968-08-29 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3647969A (th) |
| BE (1) | BE720115A (th) |
| FR (1) | FR2016588A1 (th) |
| GB (1) | GB1276344A (th) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4638258A (en) * | 1982-02-26 | 1987-01-20 | Barcus-Berry Electronics, Inc. | Reference load amplifier correction system |
| NL8401041A (nl) * | 1984-04-03 | 1985-11-01 | Philips Nv | Elektro-akoestische inrichting. |
| US5031221A (en) * | 1987-06-02 | 1991-07-09 | Yamaha Corporation | Dynamic loudspeaker driving apparatus |
| US5009281A (en) * | 1988-03-10 | 1991-04-23 | Yamaha Corporation | Acoustic apparatus |
| EP0340435A3 (en) * | 1988-04-01 | 1991-04-24 | Yamaha Corporation | Acoustic apparatus |
| JPH0728473B2 (ja) * | 1988-05-06 | 1995-03-29 | ヤマハ株式会社 | インピーダンス補償回路 |
| US4985925A (en) * | 1988-06-24 | 1991-01-15 | Sensor Electronics, Inc. | Active noise reduction system |
| GB2234880A (en) * | 1989-07-31 | 1991-02-13 | David Robin Birt | Controlling the Q factor of loudspeakers |
| US5604813A (en) * | 1994-05-02 | 1997-02-18 | Noise Cancellation Technologies, Inc. | Industrial headset |
| US6683965B1 (en) | 1995-10-20 | 2004-01-27 | Bose Corporation | In-the-ear noise reduction headphones |
| US6396930B1 (en) | 1998-02-20 | 2002-05-28 | Michael Allen Vaudrey | Active noise reduction for audiometry |
| FR2778741B1 (fr) * | 1998-05-12 | 2001-04-27 | Ct Scient Tech Batiment Cstb | Dispositif de controle actif d'impedance acoustique |
| CA2408045A1 (en) * | 2001-10-16 | 2003-04-16 | Audio Products International Corp. | Loudspeaker with large displacement motional feedback |
| DE102007002920B4 (de) | 2007-01-19 | 2012-09-20 | Wolfgang Halang | Verfahren zur Bestimmung der Membranengeschwindigkeit eines dynamischen Lautsprechers |
| GB201712391D0 (en) | 2017-08-01 | 2017-09-13 | Turner Michael James | Controller for an electromechanical transducer |
| JP7015681B2 (ja) * | 2017-11-30 | 2022-02-03 | Koa株式会社 | ヒータ温度制御回路、及び、それを用いたセンサ装置 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2887532A (en) * | 1956-10-31 | 1959-05-19 | Rca Corp | Audio frequency amplifier |
| US3047661A (en) * | 1957-01-18 | 1962-07-31 | Daniel E Winker | High fidelity audio system |
| US3530244A (en) * | 1967-02-13 | 1970-09-22 | Martin G Reiffin | Motional feedback amplifier systems |
| US3525812A (en) * | 1969-05-08 | 1970-08-25 | James E Verdier | Transducer circuit and method of operation |
-
1968
- 1968-08-29 BE BE720115D patent/BE720115A/xx unknown
-
1969
- 1969-08-28 FR FR6929427A patent/FR2016588A1/fr not_active Withdrawn
- 1969-08-28 US US853665A patent/US3647969A/en not_active Expired - Lifetime
- 1969-08-29 GB GB43186/69A patent/GB1276344A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1276344A (en) | 1972-06-01 |
| FR2016588A1 (th) | 1970-05-08 |
| US3647969A (en) | 1972-03-07 |