FR2722636B1 - SOUND DEVICE BY ELECTRET MICROPHONE - Google Patents

SOUND DEVICE BY ELECTRET MICROPHONE

Info

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
Application number
FR9408807A
Other languages
French (fr)
Other versions
FR2722636A1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR9408807A priority Critical patent/FR2722636B1/en
Priority to ES95401674T priority patent/ES2164140T3/en
Priority to DE1995623004 priority patent/DE69523004T2/en
Priority to EP19950401674 priority patent/EP0692921B1/en
Publication of FR2722636A1 publication Critical patent/FR2722636A1/en
Application granted granted Critical
Publication of FR2722636B1 publication Critical patent/FR2722636B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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)
FR9408807A 1994-07-15 1994-07-15 SOUND DEVICE BY ELECTRET MICROPHONE Expired - Lifetime FR2722636B1 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

Also Published As

Publication number Publication date
FR2722636A1 (en) 1996-01-19
DE69523004T2 (en) 2002-06-06
EP0692921A1 (en) 1996-01-17
EP0692921B1 (en) 2001-10-04
ES2164140T3 (en) 2002-02-16
DE69523004D1 (en) 2001-11-08

Similar Documents

Publication Publication Date Title
DE69207522T2 (en) Electret microphone unit
NO975559D0 (en) Ear microphone with improved sensitivity
DE69526666T2 (en) GLOBAL SOUND MICROPHONE SYSTEM
DE69619929T2 (en) Electroacoustic device
NO954391D0 (en) Acoustic damping device
DE69624658T2 (en) Speaker grilles
DE69527790D1 (en) Digital microphone device
DE69736941D1 (en) Speaker device
DE59602222D1 (en) Sound absorbing device
FR2722636B1 (en) SOUND DEVICE BY ELECTRET MICROPHONE
FR2741184B1 (en) SOUND TAKE POLE SUPPORT
DE29520083U1 (en) Microphone arrangement
KR970003687U (en) Speaker dustproof device
KR960029913U (en) Microphone anti-howling device
BR7401089U (en) Sound vibration capture device
KR940019847U (en) Sound quality improvement device for high-pitched speakers
KR970064557U (en) Speaker vibration plate
KR950016031U (en) Acoustic Listening Device
KR950034646U (en) Sound field adjustable speaker system
KR970015628U (en) Sound guide device for built-in speaker
KR970020235U (en) Speaker sound plate attachment structure
KR970011660U (en) Earphone microphone
KR980005988U (en) Speaker cover mounting device
ATA70795A (en) SOUND FILTER DEVICE
KR960033079U (en) Speaker device