NL164722C - Elektro-akoestische omzetter. - Google Patents

Elektro-akoestische omzetter.

Info

Publication number
NL164722C
NL164722C NL7202226.A NL7202226A NL164722C NL 164722 C NL164722 C NL 164722C NL 7202226 A NL7202226 A NL 7202226A NL 164722 C NL164722 C NL 164722C
Authority
NL
Netherlands
Prior art keywords
electro
acoustic converter
acoustic
converter
Prior art date
Application number
NL7202226.A
Other languages
English (en)
Dutch (nl)
Other versions
NL7202226A (https=
Original Assignee
Industrial Research Prod Inc
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 Industrial Research Prod Inc filed Critical Industrial Research Prod Inc
Publication of NL7202226A publication Critical patent/NL7202226A/xx
Application granted granted Critical
Publication of NL164722C publication Critical patent/NL164722C/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/04—Microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/06—Telephone receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
NL7202226.A 1971-05-17 1972-02-21 Elektro-akoestische omzetter. NL164722C (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14401971A 1971-05-17 1971-05-17

Publications (2)

Publication Number Publication Date
NL7202226A NL7202226A (https=) 1972-11-21
NL164722C true NL164722C (nl) 1981-01-15

Family

ID=22506712

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7202226.A NL164722C (nl) 1971-05-17 1972-02-21 Elektro-akoestische omzetter.

Country Status (7)

Country Link
US (1) US3766332A (https=)
JP (1) JPS5224842B1 (https=)
CA (1) CA963570A (https=)
DK (1) DK139370B (https=)
FR (1) FR2138061B1 (https=)
GB (1) GB1366613A (https=)
NL (1) NL164722C (https=)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1004669C2 (nl) * 1996-12-02 1998-06-03 Microtronic Nederland Bv Transducer.
US6658134B1 (en) 1999-08-16 2003-12-02 Sonionmicrotronic Nederland B.V. Shock improvement for an electroacoustic transducer
US7164776B2 (en) * 2000-01-07 2007-01-16 Knowles Electronics, Llc. Vibration balanced receiver
WO2001052594A2 (en) * 2000-01-07 2001-07-19 Knowles Electronics, Llc Vibration balanced receiver
US7072482B2 (en) 2002-09-06 2006-07-04 Sonion Nederland B.V. Microphone with improved sound inlet port
US8571227B2 (en) 2005-11-11 2013-10-29 Phitek Systems Limited Noise cancellation earphone
US8135163B2 (en) * 2007-08-30 2012-03-13 Klipsch Group, Inc. Balanced armature with acoustic low pass filter
US8666085B2 (en) * 2007-10-02 2014-03-04 Phitek Systems Limited Component for noise reducing earphone
US20090307730A1 (en) * 2008-05-29 2009-12-10 Mark Donaldson Media enhancement module
US8385583B2 (en) * 2008-08-29 2013-02-26 The Penn State Research Foundation Methods and apparatus for reduced distortion balanced armature devices
US20110002474A1 (en) * 2009-01-29 2011-01-06 Graeme Colin Fuller Active Noise Reduction System Control
EP2226902A3 (en) * 2009-03-06 2013-03-13 Phitek Systems Limited In-flight entertainment system connector
US20110188668A1 (en) * 2009-09-23 2011-08-04 Mark Donaldson Media delivery system
US9818394B2 (en) 2009-11-30 2017-11-14 Graeme Colin Fuller Realisation of controller transfer function for active noise cancellation
WO2011146429A1 (en) 2010-05-17 2011-11-24 Thales Avionics, Inc. Airline passenger seat modular user interface device
EP2471710A1 (en) 2010-11-15 2012-07-04 Nigel Greig Media distribution system
US9654854B2 (en) 2011-06-01 2017-05-16 Paul Darlington In-ear device incorporating active noise reduction

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB392318A (en) * 1932-03-05 1933-05-18 Radiophon G M B H Improvements in loud-speaking telephones or loud-speaker apparatus
US2297218A (en) * 1937-04-24 1942-09-29 Hans E Henrich Loud-speaker
NL106495C (https=) * 1956-03-06
US3002057A (en) * 1956-03-29 1961-09-26 Vigren Sten Daniel Polarized electromagnetic device
US3111187A (en) * 1959-11-23 1963-11-19 H J Leak & Company Ltd Diaphragm for electro acoustic transducer
GB1058212A (en) * 1964-04-24 1967-02-08 Gen Electric Co Ltd Improvements in or relating to telephone receivers
US3617653A (en) * 1967-05-16 1971-11-02 Tibbetts Industries Magnetic reed type acoustic transducer with improved armature

Also Published As

Publication number Publication date
FR2138061A1 (https=) 1972-12-29
DK139370B (da) 1979-02-05
FR2138061B1 (https=) 1975-08-01
DE2224148B2 (de) 1976-12-09
GB1366613A (en) 1974-09-11
CA963570A (en) 1975-02-25
DE2224148A1 (de) 1972-12-07
US3766332A (en) 1973-10-16
DK139370C (https=) 1979-07-09
JPS5224842B1 (https=) 1977-07-04
NL7202226A (https=) 1972-11-21

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Legal Events

Date Code Title Description
SNR Assignments of patents or rights arising from examined patent applications

Owner name: KNOWLES ELECTRONICS, INC.

V1 Lapsed because of non-payment of the annual fee