GB674753A - Improvements relating to sound-reproducing systems - Google Patents

Improvements relating to sound-reproducing systems

Info

Publication number
GB674753A
GB674753A GB19748/49A GB1974849A GB674753A GB 674753 A GB674753 A GB 674753A GB 19748/49 A GB19748/49 A GB 19748/49A GB 1974849 A GB1974849 A GB 1974849A GB 674753 A GB674753 A GB 674753A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
pole
coil
receiver
casing
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
GB19748/49A
Other languages
English (en)
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.)
Individual
Original Assignee
Individual
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
Priority to BE506590D priority Critical patent/BE506590A/xx
Application filed by Individual filed Critical Individual
Priority to GB19748/49A priority patent/GB674753A/en
Priority to FR1022470D priority patent/FR1022470A/fr
Priority to DEF2473A priority patent/DE969603C/de
Publication of GB674753A publication Critical patent/GB674753A/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
    • 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)
GB19748/49A 1949-07-27 1949-07-27 Improvements relating to sound-reproducing systems Expired GB674753A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE506590D BE506590A (enrdf_load_stackoverflow) 1949-07-27
GB19748/49A GB674753A (en) 1949-07-27 1949-07-27 Improvements relating to sound-reproducing systems
FR1022470D FR1022470A (fr) 1949-07-27 1950-07-25 Perfectionnements aux systèmes de reproduction sonore
DEF2473A DE969603C (de) 1949-07-27 1950-08-22 Verbesserung an einer Tonwiedergabevorrichtung

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
GB674753A true GB674753A (en) 1952-07-02

Family

ID=10134543

Family Applications (1)

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

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9648437B2 (en) 2009-08-03 2017-05-09 Imax Corporation Systems and methods for monitoring cinema loudspeakers and compensating for quality problems

Families Citing this family (1)

* 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

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9648437B2 (en) 2009-08-03 2017-05-09 Imax Corporation Systems and methods for monitoring cinema loudspeakers and compensating for quality problems
US10924874B2 (en) 2009-08-03 2021-02-16 Imax Corporation Systems and method for monitoring cinema loudspeakers and compensating for quality problems

Also Published As

Publication number Publication date
BE506590A (enrdf_load_stackoverflow)
FR1022470A (fr) 1953-03-05
DE969603C (de) 1958-06-26

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