FR2778741B1 - Dispositif de controle actif d'impedance acoustique - Google Patents

Dispositif de controle actif d'impedance acoustique

Info

Publication number
FR2778741B1
FR2778741B1 FR9805953A FR9805953A FR2778741B1 FR 2778741 B1 FR2778741 B1 FR 2778741B1 FR 9805953 A FR9805953 A FR 9805953A FR 9805953 A FR9805953 A FR 9805953A FR 2778741 B1 FR2778741 B1 FR 2778741B1
Authority
FR
France
Prior art keywords
control device
acoustic impedance
impedance control
active acoustic
active
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 - Fee Related
Application number
FR9805953A
Other languages
English (en)
Other versions
FR2778741A1 (fr
Inventor
Xavier Meynial
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.)
Centre Scientifique et Technique du Batiment CSTB
Original Assignee
Centre Scientifique et Technique du Batiment CSTB
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 Centre Scientifique et Technique du Batiment CSTB filed Critical Centre Scientifique et Technique du Batiment CSTB
Priority to FR9805953A priority Critical patent/FR2778741B1/fr
Priority to PCT/FR1999/001121 priority patent/WO1999059377A1/fr
Publication of FR2778741A1 publication Critical patent/FR2778741A1/fr
Application granted granted Critical
Publication of FR2778741B1 publication Critical patent/FR2778741B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
FR9805953A 1998-05-12 1998-05-12 Dispositif de controle actif d'impedance acoustique Expired - Fee Related FR2778741B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR9805953A FR2778741B1 (fr) 1998-05-12 1998-05-12 Dispositif de controle actif d'impedance acoustique
PCT/FR1999/001121 WO1999059377A1 (fr) 1998-05-12 1999-05-11 Dispositif de controle actif d'impedance acoustique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9805953A FR2778741B1 (fr) 1998-05-12 1998-05-12 Dispositif de controle actif d'impedance acoustique

Publications (2)

Publication Number Publication Date
FR2778741A1 FR2778741A1 (fr) 1999-11-19
FR2778741B1 true FR2778741B1 (fr) 2001-04-27

Family

ID=9526251

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9805953A Expired - Fee Related FR2778741B1 (fr) 1998-05-12 1998-05-12 Dispositif de controle actif d'impedance acoustique

Country Status (2)

Country Link
FR (1) FR2778741B1 (fr)
WO (1) WO1999059377A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2996400A1 (fr) 2012-10-01 2014-04-04 Ecole Polytech Baffle electroacoustique
GB2532796A (en) * 2014-11-28 2016-06-01 Relec Sa Low frequency active acoustic absorber by acoustic velocity control through porous resistive layers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE720115A (fr) * 1968-08-29 1969-02-03
FR2422309A1 (fr) * 1978-04-04 1979-11-02 Daniere Joannes Systeme pour la reproduction de signaux acoustiques de frequences tres basses jusqu'aux plus elevees
US4335274A (en) * 1980-01-11 1982-06-15 Ayers Richard A Sound reproduction system
DE69220342T2 (de) * 1991-12-20 1997-11-20 Matsushita Electric Ind Co Ltd Lautsprecherapparat zur Basswiedergabe
GB9513894D0 (en) * 1995-07-07 1995-09-06 Univ Salford The Loudspeaker circuit

Also Published As

Publication number Publication date
WO1999059377A1 (fr) 1999-11-18
FR2778741A1 (fr) 1999-11-19

Similar Documents

Publication Publication Date Title
ATE242249T1 (de) Herbizid aktive 3-hydroxy-4-aryl-5- oxopyrazolinderivate
DE69839134D1 (de) Aktive akustische Vorrichtung
FR2799949B1 (fr) Dispositif d'ostheosynthese rachidienne
DE69629534D1 (de) Gewebe-Aufzeigevorrichtung
FR2726115B1 (fr) Dispositif actif d'attenuation de l'intensite sonore
NO976123D0 (no) Fiskefangsthåndteringsanordning
FR2790152B1 (fr) Dispositif de suppression de decalage d'horloge
DE69704560D1 (de) Fischvorrichtung
DE69608186D1 (de) Steuerungsprozessor
FR2778741B1 (fr) Dispositif de controle actif d'impedance acoustique
FR2797232B1 (fr) Dispositif d'actionnement
ATE243218T1 (de) 2''-deoxyhygromycinderivate
FR2787160B1 (fr) Dispositif d'actionnement
FR2787031B1 (fr) Dispositif d'inhalation ameliore
DE59903807D1 (de) Wirkstoffkonzentrat
FR2729781B1 (fr) Dispositif de controle actif du bruit
LU90452B1 (fr) Dispositif d'-tanch-it-
FR2776524B1 (fr) Dispositif de gestion de periodes d'activite
FR2778109B1 (fr) Dispositif medical implantable
FR2770684B1 (fr) Dispositif d'implantation ionique
FI952544A0 (fi) Aura
NO980508D0 (no) Plog
FR2777028B1 (fr) Dispositif d'exutoire de desenfumage
FR2785311B1 (fr) Dispositif de positionnement d'elements de construction
DE19581943T1 (de) Pflugkörper

Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20130131