GB2133247B - Transducers - Google Patents

Transducers

Info

Publication number
GB2133247B
GB2133247B GB08236782A GB8236782A GB2133247B GB 2133247 B GB2133247 B GB 2133247B GB 08236782 A GB08236782 A GB 08236782A GB 8236782 A GB8236782 A GB 8236782A GB 2133247 B GB2133247 B GB 2133247B
Authority
GB
United Kingdom
Prior art keywords
transducers
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
GB08236782A
Other versions
GB2133247A (en
Inventor
Anthony John Salloway
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.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB08236782A priority Critical patent/GB2133247B/en
Publication of GB2133247A publication Critical patent/GB2133247A/en
Application granted granted Critical
Publication of GB2133247B publication Critical patent/GB2133247B/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 
    • H04R1/225—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for telephonic receivers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
GB08236782A 1982-12-24 1982-12-24 Transducers Expired GB2133247B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08236782A GB2133247B (en) 1982-12-24 1982-12-24 Transducers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08236782A GB2133247B (en) 1982-12-24 1982-12-24 Transducers

Publications (2)

Publication Number Publication Date
GB2133247A GB2133247A (en) 1984-07-18
GB2133247B true GB2133247B (en) 1987-10-28

Family

ID=10535246

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08236782A Expired GB2133247B (en) 1982-12-24 1982-12-24 Transducers

Country Status (1)

Country Link
GB (1) GB2133247B (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB463191A (en) * 1934-10-01 1937-03-23 Traylor Engineering & Mfg Comp Improvements in and relating to pulverizer mills
GB448189A (en) * 1934-12-15 1936-06-04 Cole E K Ltd Improvements in or relating to moving coil loudspeakers
GB529233A (en) * 1939-01-03 1940-11-18 William John Tennant Improvements in apparatus for conversion of wave motion into electrical energy and the converse
GB820307A (en) * 1955-02-10 1959-09-16 Emi Ltd Improvements in or relating to loudspeaker enclosures
NL7001438A (en) * 1969-02-17 1970-08-19
GB1406427A (en) * 1971-10-22 1975-09-17 Ferrograph Co Ltd Bass reflex loud-speaker enclosures
HU171882B (en) * 1975-10-22 1978-04-28 Elektroakusztikai Gyar Directional electro-acoustic converter in particular cardiodid acoustic radiator

Also Published As

Publication number Publication date
GB2133247A (en) 1984-07-18

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20021223