FR1022470A - Perfectionnements aux systèmes de reproduction sonore - Google Patents

Perfectionnements aux systèmes de reproduction sonore

Info

Publication number
FR1022470A
FR1022470A FR1022470DA FR1022470A FR 1022470 A FR1022470 A FR 1022470A FR 1022470D A FR1022470D A FR 1022470DA FR 1022470 A FR1022470 A FR 1022470A
Authority
FR
France
Prior art keywords
sound reproduction
reproduction systems
systems
sound
reproduction
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)
French (fr)
Inventor
Victor Albert Foot
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 FR1022470A publication Critical patent/FR1022470A/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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H04B5/26—Inductive coupling using coils
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • H04R27/02—Amplifying systems for the deaf

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
FR1022470D 1949-07-27 1950-07-25 Perfectionnements aux systèmes de reproduction sonore Expired FR1022470A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19748/49A GB674753A (en) 1949-07-27 1949-07-27 Improvements relating to sound-reproducing systems

Publications (1)

Publication Number Publication Date
FR1022470A true FR1022470A (fr) 1953-03-05

Family

ID=10134543

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1022470D Expired FR1022470A (fr) 1949-07-27 1950-07-25 Perfectionnements aux systèmes de reproduction sonore

Country Status (4)

Country Link
BE (1) BE506590A (enrdf_load_stackoverflow)
DE (1) DE969603C (enrdf_load_stackoverflow)
FR (1) FR1022470A (enrdf_load_stackoverflow)
GB (1) GB674753A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0296092A3 (en) * 1987-06-19 1989-08-16 George Geladakis Arrangement for wireless earphones without batteries and electronic circuits, applicable in audio-systems or audio-visual systems of all kinds
EP2462752B1 (en) 2009-08-03 2017-12-27 Imax Corporation Systems and method for monitoring cinema loudspeakers and compensating for quality problems

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB498468A (en) * 1937-07-05 1939-01-05 Joseph Poliakoff Improved method of and apparatus for the transmission of speech and other sounds

Also Published As

Publication number Publication date
BE506590A (enrdf_load_stackoverflow)
GB674753A (en) 1952-07-02
DE969603C (de) 1958-06-26

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