FR768373A - Perfectionnements aux dispositifs acoustiques - Google Patents

Perfectionnements aux dispositifs acoustiques

Info

Publication number
FR768373A
FR768373A FR768373DA FR768373A FR 768373 A FR768373 A FR 768373A FR 768373D A FR768373D A FR 768373DA FR 768373 A FR768373 A FR 768373A
Authority
FR
France
Prior art keywords
acoustic devices
acoustic
devices
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
Application number
Other languages
English (en)
Inventor
Alton Andre D
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 filed Critical
Application granted granted Critical
Publication of FR768373A publication Critical patent/FR768373A/fr
Expired 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2853—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line
    • H04R1/2857—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line for loudspeaker transducers
    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2838—Enclosures comprising vibrating or resonating arrangements of the bandpass type
    • H04R1/2842—Enclosures comprising vibrating or resonating arrangements of the bandpass type for loudspeaker transducers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR768373D 1933-04-26 1933-04-26 Perfectionnements aux dispositifs acoustiques Expired FR768373A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR768373T 1933-04-26

Publications (1)

Publication Number Publication Date
FR768373A true FR768373A (fr) 1934-08-04

Family

ID=9184182

Family Applications (1)

Application Number Title Priority Date Filing Date
FR768373D Expired FR768373A (fr) 1933-04-26 1933-04-26 Perfectionnements aux dispositifs acoustiques

Country Status (2)

Country Link
FR (1) FR768373A (fr)
NL (1) NL39326C (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0454341A2 (fr) * 1990-04-25 1991-10-30 Ford Motor Company Limited Dispositif pour la suppression du bruit
US5210805A (en) * 1992-04-06 1993-05-11 Ford Motor Company Transducer flux optimization
US5229556A (en) * 1990-04-25 1993-07-20 Ford Motor Company Internal ported band pass enclosure for sound cancellation
US5233137A (en) * 1990-04-25 1993-08-03 Ford Motor Company Protective anc loudspeaker membrane
US5319165A (en) * 1990-04-25 1994-06-07 Ford Motor Company Dual bandpass secondary source
US5323466A (en) * 1990-04-25 1994-06-21 Ford Motor Company Tandem transducer magnet structure

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0454341A2 (fr) * 1990-04-25 1991-10-30 Ford Motor Company Limited Dispositif pour la suppression du bruit
EP0454341A3 (en) * 1990-04-25 1992-06-03 Ford Motor Company Limited An active noise cancellation apparatus
US5119902A (en) * 1990-04-25 1992-06-09 Ford Motor Company Active muffler transducer arrangement
US5229556A (en) * 1990-04-25 1993-07-20 Ford Motor Company Internal ported band pass enclosure for sound cancellation
US5233137A (en) * 1990-04-25 1993-08-03 Ford Motor Company Protective anc loudspeaker membrane
US5319165A (en) * 1990-04-25 1994-06-07 Ford Motor Company Dual bandpass secondary source
US5323466A (en) * 1990-04-25 1994-06-21 Ford Motor Company Tandem transducer magnet structure
US5432857A (en) * 1990-04-25 1995-07-11 Ford Motor Company Dual bandpass secondary source
US5210805A (en) * 1992-04-06 1993-05-11 Ford Motor Company Transducer flux optimization
US5343533A (en) * 1992-04-06 1994-08-30 Ford Motor Company Transducer flux optimization

Also Published As

Publication number Publication date
NL39326C (fr)

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