EP0366109A3 - Method and device for linearizing the frequency response of a loudspeaker system - Google Patents

Method and device for linearizing the frequency response of a loudspeaker system Download PDF

Info

Publication number
EP0366109A3
EP0366109A3 EP19890119821 EP89119821A EP0366109A3 EP 0366109 A3 EP0366109 A3 EP 0366109A3 EP 19890119821 EP19890119821 EP 19890119821 EP 89119821 A EP89119821 A EP 89119821A EP 0366109 A3 EP0366109 A3 EP 0366109A3
Authority
EP
European Patent Office
Prior art keywords
speaker system
impedance
frequency response
linearizing
feedback
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.)
Ceased
Application number
EP19890119821
Other languages
German (de)
French (fr)
Other versions
EP0366109A2 (en
Inventor
Michael Walker
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.)
Alcatel Lucent Deutschland AG
Alcatel Lucent NV
Original Assignee
Alcatel SEL AG
Standard Elektrik Lorenz AG
Alcatel 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 Alcatel SEL AG, Standard Elektrik Lorenz AG, Alcatel NV filed Critical Alcatel SEL AG
Publication of EP0366109A2 publication Critical patent/EP0366109A2/en
Publication of EP0366109A3 publication Critical patent/EP0366109A3/en
Ceased 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
    • H04R3/04—Circuits for transducers for correcting frequency response
    • 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)
  • Amplifiers (AREA)

Abstract

Der Frequenzgang von Lautsprechersystemen läßt sich durch die Spannungsgegenkopplung in einfacher Weise linearisieren. Reine Spannungsgegenkopplungen haben jedoch den Nachteil, daß mechanische Resonanzerscheinungen des Lautsprechersystems nur unvollkommen kompensiert werden. Es werden ein Verfahren und eine Vorrichtung vorgeschlagen, bei welchen das Rückkopplungssignal aus der Impedanz des Lautsprechersystems gewonnen wird. Als Maß für die Impedanz des Lautsprechersystems dient der durch das Lautsprechersystem fließende Strom. Das der Impedanz entsprechende Signal gelangt nach Filterung auf den Eingang des Leistungsverstärkers zurück. The frequency response of speaker systems can be through the negative voltage feedback in a simple way linearize. Have pure negative feedback however, the disadvantage that mechanical Resonance phenomena of the speaker system only imperfectly compensated. It will be a procedure and proposed a device in which the Feedback signal from the impedance of the Speaker system is won. As a measure of that The impedance of the speaker system is used by the Speaker system flowing electricity. That of impedance the corresponding signal arrives after filtering Power amplifier input back.

EP19890119821 1988-10-28 1989-10-25 Method and device for linearizing the frequency response of a loudspeaker system Ceased EP0366109A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3836745A DE3836745A1 (en) 1988-10-28 1988-10-28 METHOD AND DEVICE FOR LINEARIZING THE FREQUENCY GEAR OF A SPEAKER SYSTEM
DE3836745 1988-10-28

Publications (2)

Publication Number Publication Date
EP0366109A2 EP0366109A2 (en) 1990-05-02
EP0366109A3 true EP0366109A3 (en) 1991-12-11

Family

ID=6366103

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890119821 Ceased EP0366109A3 (en) 1988-10-28 1989-10-25 Method and device for linearizing the frequency response of a loudspeaker system

Country Status (3)

Country Link
US (1) US5068903A (en)
EP (1) EP0366109A3 (en)
DE (1) DE3836745A1 (en)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0322798A (en) * 1989-06-20 1991-01-31 Yamaha Corp Adaptor for power amplifier
KR930001077B1 (en) * 1990-04-16 1993-02-15 삼성전자 주식회사 Speaker low range compensator
DE4334040C2 (en) * 1993-10-06 1996-07-11 Klippel Wolfgang Circuit arrangement for the independent correction of the transmission behavior of electrodynamic sound transmitters without an additional mechanical or acoustic sensor
WO1997025833A1 (en) * 1996-01-12 1997-07-17 Per Melchior Larsen A method of correcting non-linear transfer behaviour in a loudspeaker
US5796305A (en) 1996-06-14 1998-08-18 Peavey Electronics Corporation Amplifier arrangements with high damping factor
US5771300A (en) * 1996-09-25 1998-06-23 Carrier Corporation Loudspeaker phase distortion control using velocity feedback
KR100226226B1 (en) * 1997-02-24 1999-10-15 윤덕용 Mixed amplifier
US20040017921A1 (en) * 2002-07-26 2004-01-29 Mantovani Jose Ricardo Baddini Electrical impedance based audio compensation in audio devices and methods therefor
US20040086140A1 (en) * 2002-11-06 2004-05-06 Fedigan Stephen John Apparatus and method for driving an audio speaker
US8005230B2 (en) * 2002-12-20 2011-08-23 The AVC Group, LLC Method and system for digitally controlling a multi-channel audio amplifier
JP4682137B2 (en) * 2003-09-16 2011-05-11 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Audio frequency range adaptation
EP1523218A1 (en) * 2003-10-10 2005-04-13 Sony Ericsson Mobile Communications AB Method of controlling a loudspeaker system and device incorporating such control
US7826625B2 (en) * 2004-12-21 2010-11-02 Ntt Docomo, Inc. Method and apparatus for frame-based loudspeaker equalization
FR2884077B1 (en) * 2005-04-05 2007-06-15 Nicolas Bailly DOUBLE ASSEMBLY AMPLIFIER AND ENCLOSURE
US7873172B2 (en) * 2005-06-06 2011-01-18 Ntt Docomo, Inc. Modified volterra-wiener-hammerstein (MVWH) method for loudspeaker modeling and equalization
US7612682B2 (en) * 2005-06-07 2009-11-03 Metrotech Corporation Locator with removable antenna portion
TW200818696A (en) * 2006-07-10 2008-04-16 Asterion Inc Power amplifier with output voltage compensation
WO2008007312A1 (en) * 2006-07-10 2008-01-17 Bobinados De Transformadores S.L. Power amplifier
GB0725117D0 (en) * 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Frequency control based on device properties
EP2355542B1 (en) 2010-02-04 2012-09-12 Nxp B.V. Control of a loudspeaker output
US8319507B2 (en) * 2010-02-08 2012-11-27 Nxp B.V. System and method for sensing an amplifier load current
EP2538699B1 (en) 2011-06-22 2015-11-11 Nxp B.V. Control of a loudspeaker output
KR101469545B1 (en) * 2011-09-06 2014-12-05 삼성전자주식회사 Method for processing and audio signal and apparatus for processing an audio signal thereof
WO2013042317A1 (en) * 2011-09-22 2013-03-28 パナソニック株式会社 Sound reproduction device
US8913752B2 (en) * 2012-03-22 2014-12-16 Htc Corporation Audio signal measurement method for speaker and electronic apparatus having the speaker
US9654064B2 (en) * 2012-12-18 2017-05-16 Panasonic Automotive Systems Company Of America, Division Of Panasonic Corporation Of North America Amplifier apparatus with controlled negative output impedance
US9386387B2 (en) * 2013-05-23 2016-07-05 Listen, Inc. Audio measurement amplifier
FR3018418B1 (en) * 2014-03-04 2017-11-10 Univ Maine DEVICE AND METHOD FOR FILTERING THE RESONANCE PIC IN A POWER CIRCUIT OF AT LEAST ONE SPEAKER
FR3018419B1 (en) * 2014-03-05 2017-06-23 Univ Maine DEVICE AND METHOD FOR FILTERING THE RESONANCE PIC IN A POWER SUPPLY CIRCUIT OF AT LEAST ONE SPEAKER BEFORE THE SAME
US9374634B2 (en) 2014-07-10 2016-06-21 Nxp B.V. System for controlling displacement of a loudspeaker
JP6210027B2 (en) * 2014-07-18 2017-10-11 ヤマハ株式会社 Power amplifier
GB201712391D0 (en) 2017-08-01 2017-09-13 Turner Michael James Controller for an electromechanical transducer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4393353A (en) * 1979-09-28 1983-07-12 Victor Company Of Japan, Ltd. Negative feedback amplifying circuit having voltage negative feedback and current negative feedback circuits
GB2189967A (en) * 1986-04-09 1987-11-04 David Clifford Lane Loudspeaker

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872247A (en) * 1971-05-20 1975-03-18 Robert W Saville Low cost of high fidelity high power variable class a amplifier-speaker combination
DE3339108A1 (en) * 1983-10-28 1985-05-09 Standard Elektrik Lorenz Ag, 7000 Stuttgart SOUND PLAYING SYSTEM
NL8401041A (en) * 1984-04-03 1985-11-01 Philips Nv ELECTRO-ACOUSTIC DEVICE.
SE450613B (en) * 1986-03-20 1987-07-06 Goran Hahne PROCEDURE AND CIRCUIT FOR IMPROVING THE FREQUENCY DETERMINATION OF AN AUDIO BASE AMPLIFIER
DE3637666A1 (en) * 1986-11-05 1988-05-19 Joachim Rieder Phase- and amplitude-controlled loudspeaker with an arbitrary number of paths
JPS6490700A (en) * 1987-09-30 1989-04-07 Yamaha Corp Motional load driving circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4393353A (en) * 1979-09-28 1983-07-12 Victor Company Of Japan, Ltd. Negative feedback amplifying circuit having voltage negative feedback and current negative feedback circuits
GB2189967A (en) * 1986-04-09 1987-11-04 David Clifford Lane Loudspeaker

Also Published As

Publication number Publication date
US5068903A (en) 1991-11-26
EP0366109A2 (en) 1990-05-02
DE3836745A1 (en) 1990-05-03

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