DK139450B - Højttaler med en svingspole og en piezoelektrisk tilbagekoblingstransor. - Google Patents

Højttaler med en svingspole og en piezoelektrisk tilbagekoblingstransor.

Info

Publication number
DK139450B
DK139450B DK307774AA DK307774A DK139450B DK 139450 B DK139450 B DK 139450B DK 307774A A DK307774A A DK 307774AA DK 307774 A DK307774 A DK 307774A DK 139450 B DK139450 B DK 139450B
Authority
DK
Denmark
Prior art keywords
speaker
voice coil
feedback sensor
piezoelectric feedback
piezoelectric
Prior art date
Application number
DK307774AA
Other languages
English (en)
Other versions
DK139450C (da
DK307774A (da
Inventor
Guido Odilon Maurits D Hoogh
Original Assignee
Philips 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 Nv filed Critical Philips Nv
Publication of DK307774A publication Critical patent/DK307774A/da
Publication of DK139450B publication Critical patent/DK139450B/da
Application granted granted Critical
Publication of DK139450C publication Critical patent/DK139450C/da

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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
DK307774AA 1973-06-12 1974-06-07 Højttaler med en svingspole og en piezoelektrisk tilbagekoblingstransor. DK139450B (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7308103A NL7308103A (da) 1973-06-12 1973-06-12

Publications (3)

Publication Number Publication Date
DK307774A DK307774A (da) 1975-02-03
DK139450B true DK139450B (da) 1979-02-19
DK139450C DK139450C (da) 1979-07-30

Family

ID=19819047

Family Applications (1)

Application Number Title Priority Date Filing Date
DK307774AA DK139450B (da) 1973-06-12 1974-06-07 Højttaler med en svingspole og en piezoelektrisk tilbagekoblingstransor.

Country Status (16)

Country Link
US (1) US3941932A (da)
JP (2) JPS5034223A (da)
AT (1) AT332919B (da)
BE (1) BE816140A (da)
BR (1) BR7404755D0 (da)
CA (1) CA1003554A (da)
CH (1) CH569397A5 (da)
DE (1) DE2426474B2 (da)
DK (1) DK139450B (da)
ES (1) ES427139A1 (da)
FR (1) FR2233784B1 (da)
GB (1) GB1471190A (da)
IT (1) IT1011942B (da)
NL (1) NL7308103A (da)
SE (1) SE395103B (da)
ZA (1) ZA743498B (da)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5852780Y2 (ja) * 1980-07-19 1983-12-01 パイオニア株式会社 マイクロホン
JPS58182998A (ja) * 1982-04-20 1983-10-26 Pioneer Electronic Corp Ｍｆｂ型スピ−カ
US4573189A (en) * 1983-10-19 1986-02-25 Velodyne Acoustics, Inc. Loudspeaker with high frequency motional feedback
DE3429147A1 (de) * 1984-08-08 1986-02-20 Friedrich 6650 Homburg Müller Anordnung zur akustischen gegenkopplung von lautsprechern
JPS6249395U (da) * 1985-09-17 1987-03-26
US4718098A (en) * 1986-07-22 1988-01-05 Ashworth William J Multi-diaphragm artificial reverberation device
US4823391A (en) * 1986-07-22 1989-04-18 Schwartz David M Sound reproduction system
US5889871A (en) * 1993-10-18 1999-03-30 The United States Of America As Represented By The Secretary Of The Navy Surface-laminated piezoelectric-film sound transducer
US5652801A (en) * 1994-05-02 1997-07-29 Aura Systems, Inc. Resonance damper for piezoelectric transducer
US5727076A (en) * 1994-05-02 1998-03-10 Aura Systems, Inc. Audio transducer having piezoelectric device
US5901231A (en) * 1995-09-25 1999-05-04 Noise Cancellation Technologies, Inc. Piezo speaker for improved passenger cabin audio systems
US6243472B1 (en) * 1997-09-17 2001-06-05 Frank Albert Bilan Fully integrated amplified loudspeaker
US6584204B1 (en) 1997-12-11 2003-06-24 The Regents Of The University Of California Loudspeaker system with feedback control for improved bandwidth and distortion reduction
DE19843079A1 (de) * 1998-09-19 2000-03-23 Nokia Deutschland Gmbh Multiresonanzplatte
WO2003024149A1 (en) * 2001-09-10 2003-03-20 Sonion A/S Miniature speaker with integrated signal processing electronics
CA2408045A1 (en) * 2001-10-16 2003-04-16 Audio Products International Corp. Loudspeaker with large displacement motional feedback
US7120270B2 (en) * 2002-09-18 2006-10-10 Bose Corporation Audio device heat transferring
JP4141853B2 (ja) * 2003-01-30 2008-08-27 三菱電機株式会社 スピーカ
US9084051B2 (en) * 2011-02-18 2015-07-14 The Rockefeller University Unidirectional mechanical amplification in a microphone
USD776086S1 (en) * 2014-04-23 2017-01-10 Martin Audio Limited Loudspeaker
EP3185582B1 (en) * 2014-12-02 2019-10-09 Sony Corporation Speaker device
USD791106S1 (en) * 2014-12-11 2017-07-04 Sony Corporation Speaker
USD848402S1 (en) 2014-12-11 2019-05-14 Sony Corporation Speaker
GB2620787A (en) 2022-07-22 2024-01-24 Gp Acoustics Uk Ltd Loudspeakers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1932460A (en) * 1932-04-16 1933-10-31 Patent Engineering Corp Speaker amplifier
US2860183A (en) * 1954-02-01 1958-11-11 Conrad Ivan Willard Sound reproducing system
US2948778A (en) * 1956-05-07 1960-08-09 Warner W Clements Sound reproducing means
FR1370980A (fr) * 1962-11-28 1964-08-28 Brown Ltd S G Perfectionnements aux transducteurs piézo-électriques
NL294443A (da) * 1963-06-21
JPS4120247Y1 (da) * 1964-07-18 1966-09-26

Also Published As

Publication number Publication date
ATA476274A (de) 1976-02-15
AT332919B (de) 1976-10-25
CH569397A5 (da) 1975-11-14
IT1011942B (it) 1977-02-10
SE395103B (sv) 1977-07-25
DK139450C (da) 1979-07-30
CA1003554A (en) 1977-01-11
DE2426474B2 (de) 1977-06-02
SE7407496L (da) 1974-12-13
BE816140A (fr) 1974-12-10
ZA743498B (en) 1976-01-28
FR2233784A1 (da) 1975-01-10
JPS605678Y2 (ja) 1985-02-21
DE2426474A1 (de) 1975-01-09
AU6992374A (en) 1975-12-11
JPS5034223A (da) 1975-04-02
BR7404755D0 (pt) 1975-01-21
DK307774A (da) 1975-02-03
NL7308103A (da) 1974-12-16
US3941932A (en) 1976-03-02
GB1471190A (en) 1977-04-21
JPS56105993U (da) 1981-08-18
FR2233784B1 (da) 1977-10-07
ES427139A1 (es) 1976-07-16

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Legal Events

Date Code Title Description
PBP Patent lapsed