DK78383A - Elektro-akustisk kaldeapparat - Google Patents

Elektro-akustisk kaldeapparat Download PDF

Info

Publication number
DK78383A
DK78383A DK78383A DK78383A DK78383A DK 78383 A DK78383 A DK 78383A DK 78383 A DK78383 A DK 78383A DK 78383 A DK78383 A DK 78383A DK 78383 A DK78383 A DK 78383A
Authority
DK
Denmark
Prior art keywords
housing
electro
aperture
intensity
change
Prior art date
Application number
DK78383A
Other languages
English (en)
Other versions
DK78383D0 (da
Inventor
Keith John Vickers
Allan George Carr
Original Assignee
Gen Electric 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 Gen Electric Plc filed Critical Gen Electric Plc
Publication of DK78383D0 publication Critical patent/DK78383D0/da
Publication of DK78383A publication Critical patent/DK78383A/da

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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 

Landscapes

  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephone Set Structure (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Headphones And Earphones (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
DK78383A 1982-02-26 1983-02-22 Elektro-akustisk kaldeapparat DK78383A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8205748 1982-02-26

Publications (2)

Publication Number Publication Date
DK78383D0 DK78383D0 (da) 1983-02-22
DK78383A true DK78383A (da) 1983-08-27

Family

ID=10528646

Family Applications (1)

Application Number Title Priority Date Filing Date
DK78383A DK78383A (da) 1982-02-26 1983-02-22 Elektro-akustisk kaldeapparat

Country Status (15)

Country Link
EP (1) EP0087908B1 (da)
JP (1) JPS58159099A (da)
AT (1) ATE16879T1 (da)
AU (1) AU549945B2 (da)
CA (1) CA1215163A (da)
DE (1) DE3361370D1 (da)
DK (1) DK78383A (da)
GB (1) GB2115648B (da)
HK (1) HK79485A (da)
IL (1) IL67935A (da)
KE (1) KE3554A (da)
MY (1) MY8600266A (da)
NZ (1) NZ203265A (da)
ZA (1) ZA831054B (da)
ZW (1) ZW5283A1 (da)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168875A (en) * 1984-12-19 1986-06-25 Philips Electronic Associated Electroacoustic calling device
AT400910B (de) * 1994-06-16 1996-04-25 Akg Akustische Kino Geraete Akustischer widerstand, insbesondere für elektroakustische wandler
US6124992A (en) * 1995-02-08 2000-09-26 Seagate Technology Llc System and method for reconstructing a signal wave in a partial response read channel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1884724A (en) * 1923-06-19 1932-10-25 Western Electric Co Sound box for phonic diaphragms
US3826333A (en) * 1973-03-21 1974-07-30 J Buckwalter Baffle for a sound producing device
FR2273335B1 (da) * 1974-05-31 1979-05-25 Klaxon Sa
GB2082018B (en) * 1980-07-31 1983-10-12 Standard Telephones Cables Ltd Telephone sounder

Also Published As

Publication number Publication date
EP0087908B1 (en) 1985-12-04
AU1149283A (en) 1983-09-01
GB8305038D0 (en) 1983-03-30
NZ203265A (en) 1985-04-30
CA1215163A (en) 1986-12-09
EP0087908A1 (en) 1983-09-07
DE3361370D1 (en) 1986-01-16
GB2115648B (en) 1985-03-13
ZA831054B (en) 1984-03-28
IL67935A0 (en) 1983-06-15
KE3554A (en) 1985-08-30
DK78383D0 (da) 1983-02-22
ATE16879T1 (de) 1985-12-15
IL67935A (en) 1986-04-29
HK79485A (en) 1985-10-25
JPS58159099A (ja) 1983-09-21
MY8600266A (en) 1986-12-31
GB2115648A (en) 1983-09-07
ZW5283A1 (en) 1983-05-11
AU549945B2 (en) 1986-02-20

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Legal Events

Date Code Title Description
AHB Application shelved due to non-payment