DK139370C - - Google Patents

Info

Publication number
DK139370C
DK139370C DK245572A DK245572A DK139370C DK 139370 C DK139370 C DK 139370C DK 245572 A DK245572 A DK 245572A DK 245572 A DK245572 A DK 245572A DK 139370 C DK139370 C DK 139370C
Authority
DK
Denmark
Application number
DK245572A
Other languages
Danish (da)
Other versions
DK139370B (da
Inventor
E V Carlson
Jr. A F Mostardo
Original Assignee
Industrial Research Products 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 Products Inc. filed Critical Industrial Research Products Inc.
Publication of DK139370B publication Critical patent/DK139370B/da
Application granted granted Critical
Publication of DK139370C publication Critical patent/DK139370C/da

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)
DK245572AA 1971-05-17 1972-05-17 Elektroakustisk omsætter. DK139370B (da)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
DK139370B DK139370B (da) 1979-02-05
DK139370C true DK139370C (fa) 1979-07-09

Family

ID=22506712

Family Applications (1)

Application Number Title Priority Date Filing Date
DK245572AA DK139370B (da) 1971-05-17 1972-05-17 Elektroakustisk omsætter.

Country Status (7)

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

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
JP2003520007A (ja) * 2000-01-07 2003-06-24 ノウルズ エレクトロニクス エルエルシー 振動平衡レシーバー
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
NZ584418A (en) * 2007-10-02 2012-12-21 Phitek Systems Ltd Component for noise reducing earphone
EP2129114A3 (en) * 2008-05-29 2011-11-02 Phitek Systems Limited Media enhancement module
WO2010025351A2 (en) * 2008-08-29 2010-03-04 The Peen 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
US20110003505A1 (en) * 2009-03-06 2011-01-06 Nigel Greig 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
BR112012028245B1 (pt) 2010-05-17 2021-04-20 Phitek Systems, Ltd. unidade de suporte do módulo e unidade de exibição de vídeo
EP2471710A1 (en) 2010-11-15 2012-07-04 Nigel Greig Media distribution system
CN103748903B (zh) 2011-06-01 2017-02-22 菲泰克系统有限公司 包括有源噪声降低的耳内装置

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 (fa) * 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
DE2224148A1 (de) 1972-12-07
DE2224148B2 (de) 1976-12-09
FR2138061B1 (fa) 1975-08-01
FR2138061A1 (fa) 1972-12-29
CA963570A (en) 1975-02-25
US3766332A (en) 1973-10-16
JPS5224842B1 (fa) 1977-07-04
NL164722C (nl) 1981-01-15
NL7202226A (fa) 1972-11-21
GB1366613A (en) 1974-09-11
DK139370B (da) 1979-02-05

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Legal Events

Date Code Title Description
PBP Patent lapsed