ZA722575B - Improvements in or relating to electro-acoustical transducers - Google Patents

Improvements in or relating to electro-acoustical transducers

Info

Publication number
ZA722575B
ZA722575B ZA722575A ZA722575A ZA722575B ZA 722575 B ZA722575 B ZA 722575B ZA 722575 A ZA722575 A ZA 722575A ZA 722575 A ZA722575 A ZA 722575A ZA 722575 B ZA722575 B ZA 722575B
Authority
ZA
South Africa
Prior art keywords
electro
relating
acoustical transducers
acoustical
transducers
Prior art date
Application number
ZA722575A
Inventor
E Martin
F Beil
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of ZA722575B publication Critical patent/ZA722575B/en

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 
    • H04R1/222—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
ZA722575A 1971-04-23 1972-04-17 Improvements in or relating to electro-acoustical transducers ZA722575B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2119911A DE2119911B2 (en) 1971-04-23 1971-04-23 Electroacoustic converter, in particular microphone for telephone systems

Publications (1)

Publication Number Publication Date
ZA722575B true ZA722575B (en) 1973-01-31

Family

ID=5805699

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA722575A ZA722575B (en) 1971-04-23 1972-04-17 Improvements in or relating to electro-acoustical transducers

Country Status (10)

Country Link
US (1) US3798392A (en)
BE (1) BE782498R (en)
BG (1) BG20417A4 (en)
DE (1) DE2119911B2 (en)
FR (1) FR2134023B2 (en)
GB (1) GB1350023A (en)
IT (1) IT1018506B (en)
LU (1) LU65209A1 (en)
SE (1) SE367752B (en)
ZA (1) ZA722575B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1032479A (en) * 1974-09-16 1978-06-06 Rudolf Gorike Headphone
DE2937922A1 (en) * 1979-09-19 1981-04-09 Siemens AG, 1000 Berlin und 8000 München PIEZOELECTRIC CONVERTER
EP2908552A4 (en) * 2012-10-15 2016-06-08 Nec Corp Electroacoustic transducer, manufacturing method thereof, and electronic device utilizing same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE88657C (en) *
US1757938A (en) * 1925-04-13 1930-05-06 Harvey C Hayes Acoustic instrument
FR1084139A (en) * 1952-10-06 1955-01-17 Condenser microphone for directional reception
US2921993A (en) * 1955-10-04 1960-01-19 Electro Voice Pressure gradient noise canceling microphone
US3206558A (en) * 1961-09-22 1965-09-14 Erie Technological Prod Inc Microphone
DE1226647B (en) * 1965-03-22 1966-10-13 Siemens Ag Electroacoustic converter
BE759888A (en) * 1969-12-05 1971-06-04 Siemens Ag ELECTRO-ACOUSTIC TRANSDUCER, ESPECIALLY MICROPHONE FOR TELEPHONE SYSTEMS

Also Published As

Publication number Publication date
GB1350023A (en) 1974-04-18
IT1018506B (en) 1977-10-20
FR2134023B2 (en) 1978-03-03
BE782498R (en) 1972-10-23
DE2119911A1 (en) 1972-11-02
US3798392A (en) 1974-03-19
LU65209A1 (en) 1972-07-13
SE367752B (en) 1974-06-04
BG20417A4 (en) 1975-11-05
DE2119911B2 (en) 1973-11-15
FR2134023A2 (en) 1972-12-01

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