EP0658064A3 - Appareil de reproduction acoustique - Google Patents

Appareil de reproduction acoustique Download PDF

Info

Publication number
EP0658064A3
EP0658064A3 EP94119350A EP94119350A EP0658064A3 EP 0658064 A3 EP0658064 A3 EP 0658064A3 EP 94119350 A EP94119350 A EP 94119350A EP 94119350 A EP94119350 A EP 94119350A EP 0658064 A3 EP0658064 A3 EP 0658064A3
Authority
EP
European Patent Office
Prior art keywords
speaker
output signal
subtractor
microphone
acoustic
Prior art date
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.)
Withdrawn
Application number
EP94119350A
Other languages
German (de)
English (en)
Other versions
EP0658064A2 (fr
Inventor
Fumiyasu Konno
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP0658064A2 publication Critical patent/EP0658064A2/fr
Publication of EP0658064A3 publication Critical patent/EP0658064A3/fr
Withdrawn legal-status Critical Current

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
    • H04R3/00—Circuits for transducers
    • 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)
  • Circuit For Audible Band Transducer (AREA)
EP94119350A 1993-12-09 1994-12-07 Appareil de reproduction acoustique Withdrawn EP0658064A3 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP309015/93 1993-12-09
JP30901593 1993-12-09
JP30901593 1993-12-09

Publications (2)

Publication Number Publication Date
EP0658064A2 EP0658064A2 (fr) 1995-06-14
EP0658064A3 true EP0658064A3 (fr) 2004-09-01

Family

ID=17987859

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94119350A Withdrawn EP0658064A3 (fr) 1993-12-09 1994-12-07 Appareil de reproduction acoustique

Country Status (1)

Country Link
EP (1) EP0658064A3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100592786C (zh) * 2004-03-11 2010-02-24 卡纳尔技术公司 智能卡动态管理

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2292854B (en) * 1994-08-12 1999-08-25 Motorola Ltd Electronic audio device and method of operation
US6243472B1 (en) * 1997-09-17 2001-06-05 Frank Albert Bilan Fully integrated amplified loudspeaker
DE19746645C1 (de) * 1997-10-22 1999-05-20 Fraunhofer Ges Forschung Adaptiver akustischer Monitor
CZ292683B6 (cs) * 1998-12-01 2003-11-12 Matsushita Electric Industrial Co., Ltd. Reproduktor
JP2001157293A (ja) * 1999-12-01 2001-06-08 Matsushita Electric Ind Co Ltd スピーカ装置
DE102005016204A1 (de) * 2005-04-07 2006-10-12 Sennheiser Electronic Gmbh & Co. Kg Kopfhörer zum Anschluss an eine externe aktive Lärmkompensationsvorrichtung
US9743181B2 (en) 2016-01-06 2017-08-22 Apple Inc. Loudspeaker equalizer
US9961464B2 (en) 2016-09-23 2018-05-01 Apple Inc. Pressure gradient microphone for measuring an acoustic characteristic of a loudspeaker
US10299039B2 (en) 2017-06-02 2019-05-21 Apple Inc. Audio adaptation to room
US10425733B1 (en) 2018-09-28 2019-09-24 Apple Inc. Microphone equalization for room acoustics

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147166A (en) * 1983-09-26 1985-05-01 Graham Potter Apparatus and method for providing an undistorted output signal from a non-linear device
JPS60263598A (ja) * 1984-06-11 1985-12-27 Matsushita Electric Ind Co Ltd ハウリング抑圧装置
GB2211685A (en) * 1987-10-28 1989-07-05 Ian Grenville Thomas Differential volume adjusters
JPH02230897A (ja) * 1989-03-03 1990-09-13 Nippon Telegr & Teleph Corp <Ntt> 音圧制御装置
JPH04302300A (ja) * 1991-03-29 1992-10-26 Aiwa Co Ltd バスレフ形スピーカの駆動装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147166A (en) * 1983-09-26 1985-05-01 Graham Potter Apparatus and method for providing an undistorted output signal from a non-linear device
JPS60263598A (ja) * 1984-06-11 1985-12-27 Matsushita Electric Ind Co Ltd ハウリング抑圧装置
GB2211685A (en) * 1987-10-28 1989-07-05 Ian Grenville Thomas Differential volume adjusters
JPH02230897A (ja) * 1989-03-03 1990-09-13 Nippon Telegr & Teleph Corp <Ntt> 音圧制御装置
JPH04302300A (ja) * 1991-03-29 1992-10-26 Aiwa Co Ltd バスレフ形スピーカの駆動装置

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 133 (E - 404) 17 May 1986 (1986-05-17) *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 541 (E - 1007) 29 November 1990 (1990-11-29) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 128 (E - 1333) 18 March 1993 (1993-03-18) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100592786C (zh) * 2004-03-11 2010-02-24 卡纳尔技术公司 智能卡动态管理

Also Published As

Publication number Publication date
EP0658064A2 (fr) 1995-06-14

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