ES2164140T3 - SOUND DEVICE DEVICE FOR MICROPHONE WITH ELECTRETS. - Google Patents

SOUND DEVICE DEVICE FOR MICROPHONE WITH ELECTRETS.

Info

Publication number
ES2164140T3
ES2164140T3 ES95401674T ES95401674T ES2164140T3 ES 2164140 T3 ES2164140 T3 ES 2164140T3 ES 95401674 T ES95401674 T ES 95401674T ES 95401674 T ES95401674 T ES 95401674T ES 2164140 T3 ES2164140 T3 ES 2164140T3
Authority
ES
Spain
Prior art keywords
electret microphone
microphone
sound
electrets
output
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
ES95401674T
Other languages
Spanish (es)
Inventor
Tourneur Gregoire Le
Marcel Clement
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.)
Orange SA
Original Assignee
France Telecom SA
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 France Telecom SA filed Critical France Telecom SA
Application granted granted Critical
Publication of ES2164140T3 publication Critical patent/ES2164140T3/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)

Abstract

LA INVENCION SE REFIERE A UN DISPOSITIVO DE TOMA DE SONIDO POR MICROFONO ELECTRET-COMPRENDE UNA CONEXION (1) POR CAPACIDAD DE ENLACE (11, 12) ENTRE CADA BORNA DE SALIDA DEL MICROFONO ELECTRET (M) Y UNA ENTRADA DE UNA ESCALON AMPLIFICADOR DIFERENCIAL (3) (3). UN CIRCUITO DE POLARIZACION (2) SIMETRICO DE LAS BORNAS DE SALID DEL MICROFONO ELECTRET (M) COMPRENDE UNA PRIMERA Y UNA SEGUNDA FUENTE DE TENSION (21, 22) SIMETRICAS RESPECTO DE UNA TENSION DE REFERENCIA, ESTANDO CADA UNA CONECTADA A UNA BORNA DE SALIDA DEL MICROFONO ELECTRET (M). APLICACION EN LA REALIZACION DE ANTENAS ACUSTICAS O DE SISTEMAS DE TOMA DE SONIDO DE CALIDAD EN EL CAMPO DE LAS TELECOMUNICACIONES.THE INVENTION REFERS TO AN ELECTRET MICROPHONE SOUND-TAKING DEVICE - UNDERSTANDS A CONNECTION (1) BY LINK CAPACITY (11, 12) BETWEEN EACH OUTPUT OF THE ELECTRET MICROPHONE (M) AND AN INPUT OF A DIFFERENTIAL AMPLIFIER SCALE ( 3) (3). A POLARIZATION CIRCUIT (2) SYMBOL OF THE OUTPUT TERMINALS OF THE ELECTRET MICROPHONE (M) INCLUDES A FIRST AND A SECOND VOLTAGE SOURCE (21, 22) SYNTHETIC REGARDING A REFERENCE VOLTAGE, EACH ONE CONNECTED TO AN OUTPUT TERMINAL OF THE ELECTRET MICROPHONE (M). APPLICATION IN THE PERFORMANCE OF ACOUSTIC ANTENNAS OR QUALITY SOUND TAKING SYSTEMS IN THE TELECOMMUNICATIONS FIELD.

ES95401674T 1994-07-15 1995-07-12 SOUND DEVICE DEVICE FOR MICROPHONE WITH ELECTRETS. Expired - Lifetime ES2164140T3 (en)

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 (1)

Publication Number Publication Date
ES2164140T3 true ES2164140T3 (en) 2002-02-16

Family

ID=9465436

Family Applications (1)

Application Number Title Priority Date Filing Date
ES95401674T Expired - Lifetime ES2164140T3 (en) 1994-07-15 1995-07-12 SOUND DEVICE DEVICE FOR MICROPHONE WITH ELECTRETS.

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
EP0692921B1 (en) 2001-10-04
DE69523004T2 (en) 2002-06-06
DE69523004D1 (en) 2001-11-08
EP0692921A1 (en) 1996-01-17
FR2722636B1 (en) 1996-09-20

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