FR2722636B1 - SOUND DEVICE BY ELECTRET MICROPHONE - Google Patents
SOUND DEVICE BY ELECTRET MICROPHONEInfo
- Publication number
- FR2722636B1 FR2722636B1 FR9408807A FR9408807A FR2722636B1 FR 2722636 B1 FR2722636 B1 FR 2722636B1 FR 9408807 A FR9408807 A FR 9408807A FR 9408807 A FR9408807 A FR 9408807A FR 2722636 B1 FR2722636 B1 FR 2722636B1
- Authority
- FR
- France
- Prior art keywords
- sound device
- electret microphone
- electret
- microphone
- sound
- 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 - Lifetime
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
- H04R19/00—Electrostatic transducers
- H04R19/04—Microphones
-
- 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
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/04—Structural association of microphone with electric circuitry therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
- H04R19/01—Electrostatic transducers characterised by the use of electrets
- H04R19/016—Electrostatic transducers characterised by the use of electrets for microphones
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9408807A FR2722636B1 (en) | 1994-07-15 | 1994-07-15 | SOUND DEVICE BY ELECTRET MICROPHONE |
ES95401674T ES2164140T3 (en) | 1994-07-15 | 1995-07-12 | SOUND DEVICE DEVICE FOR MICROPHONE WITH ELECTRETS. |
DE1995623004 DE69523004T2 (en) | 1994-07-15 | 1995-07-12 | Sound recording device through electret microphone |
EP19950401674 EP0692921B1 (en) | 1994-07-15 | 1995-07-12 | Sound pick-up device by an electret microphone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9408807A FR2722636B1 (en) | 1994-07-15 | 1994-07-15 | SOUND DEVICE BY ELECTRET MICROPHONE |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2722636A1 FR2722636A1 (en) | 1996-01-19 |
FR2722636B1 true FR2722636B1 (en) | 1996-09-20 |
Family
ID=9465436
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9408807A Expired - Lifetime FR2722636B1 (en) | 1994-07-15 | 1994-07-15 | SOUND DEVICE BY ELECTRET MICROPHONE |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0692921B1 (en) |
DE (1) | DE69523004T2 (en) |
ES (1) | ES2164140T3 (en) |
FR (1) | FR2722636B1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2769164B1 (en) * | 1997-09-26 | 2002-10-31 | Alain Maurice Ange Magagnini | MICRO ELECTROSTATIC DEVICE WITH INTEGRATED CIRCUIT INTERFACE |
KR100459565B1 (en) | 2001-12-04 | 2004-12-03 | 삼성전자주식회사 | Device for reducing echo and noise in phone |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3778561A (en) * | 1972-06-21 | 1973-12-11 | Bell Canada Northern Electric | Electret microphone |
FR2497433A1 (en) * | 1980-12-31 | 1982-07-02 | Thomson Csf Mat Tel | CIRCUIT FOR CONNECTING AN ACTIVE MICROPHONE, ESPECIALLY ELECTRET TO A TELEPHONE TRANSMISSION CIRCUIT |
DE3933870C2 (en) * | 1989-10-11 | 1999-07-22 | Neumann Gmbh Georg | Method and circuit arrangement for controlling microphones |
JP2734265B2 (en) * | 1991-12-12 | 1998-03-30 | 日本電気株式会社 | Amplifier circuit for electret condenser microphone |
US5315231A (en) * | 1992-11-16 | 1994-05-24 | Hughes Aircraft Company | Symmetrical bipolar bias current source with high power supply rejection ratio (PSRR) |
-
1994
- 1994-07-15 FR FR9408807A patent/FR2722636B1/en not_active Expired - Lifetime
-
1995
- 1995-07-12 ES ES95401674T patent/ES2164140T3/en not_active Expired - Lifetime
- 1995-07-12 DE DE1995623004 patent/DE69523004T2/en not_active Expired - Lifetime
- 1995-07-12 EP EP19950401674 patent/EP0692921B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0692921A1 (en) | 1996-01-17 |
ES2164140T3 (en) | 2002-02-16 |
DE69523004D1 (en) | 2001-11-08 |
FR2722636A1 (en) | 1996-01-19 |
EP0692921B1 (en) | 2001-10-04 |
DE69523004T2 (en) | 2002-06-06 |
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