GB570337A - Improvements in or relating to electro-acoustical transducers of the moving coil type - Google Patents

Improvements in or relating to electro-acoustical transducers of the moving coil type

Info

Publication number
GB570337A
GB570337A GB15894/43A GB1589443A GB570337A GB 570337 A GB570337 A GB 570337A GB 15894/43 A GB15894/43 A GB 15894/43A GB 1589443 A GB1589443 A GB 1589443A GB 570337 A GB570337 A GB 570337A
Authority
GB
United Kingdom
Prior art keywords
chamber
diaphragm
magnet
space
annular
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
GB15894/43A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB570337A publication Critical patent/GB570337A/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/10—Telephone receivers
    • 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 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/08—Microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
GB15894/43A 1943-09-28 1943-09-28 Improvements in or relating to electro-acoustical transducers of the moving coil type Expired GB570337A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB257773X 1943-09-28

Publications (1)

Publication Number Publication Date
GB570337A true GB570337A (en) 1945-07-03

Family

ID=10233117

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15894/43A Expired GB570337A (en) 1943-09-28 1943-09-28 Improvements in or relating to electro-acoustical transducers of the moving coil type

Country Status (5)

Country Link
US (1) US2509224A (enrdf_load_stackoverflow)
BE (1) BE465934A (enrdf_load_stackoverflow)
CH (1) CH257773A (enrdf_load_stackoverflow)
FR (1) FR939106A (enrdf_load_stackoverflow)
GB (1) GB570337A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714134A (en) * 1951-02-27 1955-07-26 Martin L Touger Headset receiver
US3925626A (en) * 1974-02-22 1975-12-09 Jr Robert John Stallings Dynamic speaker having dome diaphragm and basket frequency

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1952357A (en) * 1930-09-12 1934-03-27 Columbia Graphophone Co Ltd Electromechanical device
US1954966A (en) * 1931-01-31 1934-04-17 Bell Telephone Labor Inc Sound translating device
US1964606A (en) * 1932-04-12 1934-06-26 Bell Telephone Labor Inc Acoustic device
US2084944A (en) * 1933-07-03 1937-06-22 Lionel B Cornwell Acoustic device
US2095373A (en) * 1934-11-09 1937-10-12 Bendix Radio Corp Sound translating device

Also Published As

Publication number Publication date
FR939106A (fr) 1948-11-04
BE465934A (enrdf_load_stackoverflow)
CH257773A (de) 1948-10-31
US2509224A (en) 1950-05-30

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