FR2168143A1 - - Google Patents
Info
- Publication number
- FR2168143A1 FR2168143A1 FR7201462A FR7201462A FR2168143A1 FR 2168143 A1 FR2168143 A1 FR 2168143A1 FR 7201462 A FR7201462 A FR 7201462A FR 7201462 A FR7201462 A FR 7201462A FR 2168143 A1 FR2168143 A1 FR 2168143A1
- Authority
- FR
- France
- 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.)
- Granted
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
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Networks Using Active Elements (AREA)
- Circuit For Audible Band Transducer (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00211545A US3849602A (en) | 1971-12-23 | 1971-12-23 | Earphone with frequency correction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2168143A1 true FR2168143A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1973-08-31 |
| FR2168143B1 FR2168143B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-07-23 |
Family
ID=22787378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7201462A Expired FR2168143B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1971-12-23 | 1972-01-17 |
Country Status (3)
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3988541A (en) * | 1975-01-14 | 1976-10-26 | Iowa State University Research Foundation, Inc. | Method and apparatus for frequency compensation of electro-mechanical transducer |
| US4689818A (en) * | 1983-04-28 | 1987-08-25 | Siemens Hearing Instruments, Inc. | Resonant peak control |
| FR2570239B1 (fr) * | 1984-09-07 | 1988-07-15 | Centre Nat Rech Scient | Ecouteur, combine telephonique et casque d'ecoute destines a corriger les deficiences auditives individuelles |
| US5123052A (en) * | 1990-02-01 | 1992-06-16 | Brisson Bruce A | Method and apparatus for reducing the attenuation and phase shift of low frequency components of audio signals |
| US6771781B2 (en) | 2001-05-08 | 2004-08-03 | Daniel A. Chattin | Variable damping circuit for a loudspeaker |
| WO2008109826A1 (en) * | 2007-03-07 | 2008-09-12 | Personics Holdings Inc. | Acoustic dampening compensation system |
| CN201577178U (zh) * | 2009-12-10 | 2010-09-08 | 陈小丽 | 一种具有无源音效调节功能的耳机 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR823417A (fr) * | 1936-09-30 | 1938-01-20 | Perfectionnements aux hauts-parleurs | |
| FR1067128A (fr) * | 1952-11-26 | 1954-06-11 | Amplificateur pour sourds | |
| GB873513A (en) * | 1956-08-06 | 1961-07-26 | Amar Gopal Bose | Improvements in or relating to transducers |
-
1971
- 1971-12-23 US US00211545A patent/US3849602A/en not_active Expired - Lifetime
- 1971-12-23 GB GB5985971A patent/GB1330968A/en not_active Expired
-
1972
- 1972-01-17 FR FR7201462A patent/FR2168143B1/fr not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR823417A (fr) * | 1936-09-30 | 1938-01-20 | Perfectionnements aux hauts-parleurs | |
| FR1067128A (fr) * | 1952-11-26 | 1954-06-11 | Amplificateur pour sourds | |
| GB873513A (en) * | 1956-08-06 | 1961-07-26 | Amar Gopal Bose | Improvements in or relating to transducers |
| GB887464A (en) * | 1956-08-06 | 1962-01-17 | Amar Gopal Bose | Improvements in or relating to loudspeaker transducing systems |
Non-Patent Citations (2)
| Title |
|---|
| "A COMPLEX SOUND SYSTEM EQUALISATION" PAR R. THURMOND, PRESENTE A LA 40EME CONVENTION, 27-30 AVRIL 1971 * |
| REVUE US "AUDIO ENGINEERING SOCIETY PREPRINT", PREPRINT NO. 796 F-4 , ARTICLE * |
Also Published As
| Publication number | Publication date |
|---|---|
| US3849602A (en) | 1974-11-19 |
| FR2168143B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-07-23 |
| GB1330968A (en) | 1973-09-19 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |