FR2133693A1 - - Google Patents

Info

Publication number
FR2133693A1
FR2133693A1 FR7213007A FR7213007A FR2133693A1 FR 2133693 A1 FR2133693 A1 FR 2133693A1 FR 7213007 A FR7213007 A FR 7213007A FR 7213007 A FR7213007 A FR 7213007A FR 2133693 A1 FR2133693 A1 FR 2133693A1
Authority
FR
France
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.)
Granted
Application number
FR7213007A
Other languages
French (fr)
Other versions
FR2133693B1 (de
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2133693A1 publication Critical patent/FR2133693A1/fr
Application granted granted Critical
Publication of FR2133693B1 publication Critical patent/FR2133693B1/fr
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 
    • H04R1/222—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for microphones

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
FR7213007A 1971-04-14 1972-04-13 Expired FR2133693B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7105001A NL7105001A (de) 1971-04-14 1971-04-14

Publications (2)

Publication Number Publication Date
FR2133693A1 true FR2133693A1 (de) 1972-12-01
FR2133693B1 FR2133693B1 (de) 1979-01-05

Family

ID=19812916

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7213007A Expired FR2133693B1 (de) 1971-04-14 1972-04-13

Country Status (5)

Country Link
US (1) US3790724A (de)
AT (1) AT325692B (de)
FR (1) FR2133693B1 (de)
GB (1) GB1369377A (de)
NL (1) NL7105001A (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2236374C3 (de) * 1972-07-25 1975-01-16 Josef Wilhelm 8725 Arnstein Manger Elektroakustisches Wandlersystem
US4013846A (en) * 1975-08-28 1977-03-22 Minnesota Mining And Manufacturing Company Piston loudspeaker
GB2134745B (en) * 1983-02-04 1986-10-22 Standard Telephones Cables Ltd Electro acoustic tranducer
AT382281B (de) * 1984-11-15 1987-02-10 Akg Akustische Kino Geraete Kreisringfoermige membran, insbesondere fuer mikrophone und kopfhoerer
US4752963A (en) * 1985-06-12 1988-06-21 Kabushiki Kaisha Kenwood Electroacoustic converter having a recessed step on the center pole
DE3700594A1 (de) * 1986-01-16 1987-07-23 Akg Akustische Kino Geraete Druckgradientenempfaenger
WO1999045742A1 (en) * 1998-03-03 1999-09-10 Koninklijke Philips Electronics N.V. A loudspeaker featuring acoustic friction to damp resonance
JP2002152885A (ja) * 2000-11-14 2002-05-24 Sony Corp スピーカ装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971704C (de) * 1953-06-25 1959-03-19 Carl Ludwig Lehner Elektroakustischer Wandler fuer telefonische Zwecke
GB1037244A (en) * 1964-02-20 1966-07-27 Standard Telephones Cables Ltd Improvements in or relating to moving coil transducers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB812348A (en) * 1954-06-03 1959-04-22 Leonard Walter Murkham Improvements in and relating to electro magnetic transducers
US1941073A (en) * 1931-08-12 1933-12-26 Bell Telephone Labor Inc Pneumatic sound reproducer
US3240883A (en) * 1961-05-25 1966-03-15 Shure Bros Microphone
US3581015A (en) * 1966-12-28 1971-05-25 Aiwa Co Dynamic microphone

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971704C (de) * 1953-06-25 1959-03-19 Carl Ludwig Lehner Elektroakustischer Wandler fuer telefonische Zwecke
GB1037244A (en) * 1964-02-20 1966-07-27 Standard Telephones Cables Ltd Improvements in or relating to moving coil transducers

Also Published As

Publication number Publication date
DE2217051A1 (de) 1972-10-26
DE2217051B2 (de) 1976-09-02
NL7105001A (de) 1972-10-17
FR2133693B1 (de) 1979-01-05
ATA312972A (de) 1975-01-15
AT325692B (de) 1975-11-10
US3790724A (en) 1974-02-05
GB1369377A (en) 1974-10-09

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Legal Events

Date Code Title Description
ST Notification of lapse