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FR1143609A - Improvement in the electrophones - Google Patents

Improvement in the electrophones

Info

Publication number
FR1143609A
FR1143609A FR1143609DA FR1143609A FR 1143609 A FR1143609 A FR 1143609A FR 1143609D A FR1143609D A FR 1143609DA FR 1143609 A FR1143609 A FR 1143609A
Authority
FR
France
Prior art keywords
electrophones
improvement
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
French (fr)
Inventor
Andre-Marie-Bernard Charlin
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 FR1143609A publication Critical patent/FR1143609A/en
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
    • H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
    • H04R1/2823—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material
    • H04R1/2826—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
FR1143609D 1954-07-21 1954-07-21 Improvement in the electrophones Expired FR1143609A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1143609T 1954-07-21

Publications (1)

Publication Number Publication Date
FR1143609A true FR1143609A (en) 1957-10-03

Family

ID=9643909

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1143609D Expired FR1143609A (en) 1954-07-21 1954-07-21 Improvement in the electrophones

Country Status (1)

Country Link
FR (1) FR1143609A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0037139A1 (en) * 1980-03-28 1981-10-07 Stifag Bauplanungs AG. Loudspeaker enclosure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0037139A1 (en) * 1980-03-28 1981-10-07 Stifag Bauplanungs AG. Loudspeaker enclosure

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