DK1169884T3 - Flat speaker and method for its operation - Google Patents

Flat speaker and method for its operation

Info

Publication number
DK1169884T3
DK1169884T3 DK99960797T DK99960797T DK1169884T3 DK 1169884 T3 DK1169884 T3 DK 1169884T3 DK 99960797 T DK99960797 T DK 99960797T DK 99960797 T DK99960797 T DK 99960797T DK 1169884 T3 DK1169884 T3 DK 1169884T3
Authority
DK
Denmark
Prior art keywords
flat surface
loudspeaker
frequency response
filtering device
frequency curve
Prior art date
Application number
DK99960797T
Other languages
Danish (da)
Inventor
Robert Boesnecker
Original Assignee
Siemens Ag
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7905046&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DK1169884(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of DK1169884T3 publication Critical patent/DK1169884T3/en

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
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
    • 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
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion

Abstract

The invention relates to a method for operating a flat surface loudspeaker (1). According to the method, at least one moving coil (3, 4) is applied to a platform-shaped surface (2) with predetermined material properties. Said surface is excited to vibration by the at least one moving coil, which is electrically excited by a source of sound (7). The acoustic frequency response of the flat surface loudspeaker is measured and the inverse frequency curve to its frequency curve is determined. This inverse frequency curve is simulated in a filtering device (8) as its transfer function. The filtering device is connected between the sound source (7) and the flat surface loudspeaker (1) in the operating arrangement, so that the frequency response of the flat surface speaker is compensated based on its transfer function. The compensation of the frequency response of the flat surface loudspeaker improves its transfer properties even to hi-fi standards.
DK99960797T 1999-04-19 1999-10-21 Flat speaker and method for its operation DK1169884T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19917584A DE19917584A1 (en) 1999-04-19 1999-04-19 Flat panel loudspeaker operating method
PCT/DE1999/003377 WO2000064217A1 (en) 1999-04-19 1999-10-21 Flat surface loudspeaker and method for operating the same

Publications (1)

Publication Number Publication Date
DK1169884T3 true DK1169884T3 (en) 2003-10-20

Family

ID=7905046

Family Applications (1)

Application Number Title Priority Date Filing Date
DK99960797T DK1169884T3 (en) 1999-04-19 1999-10-21 Flat speaker and method for its operation

Country Status (7)

Country Link
EP (1) EP1169884B1 (en)
JP (1) JP2002542745A (en)
AT (1) ATE243910T1 (en)
AU (1) AU767985B2 (en)
DE (2) DE19917584A1 (en)
DK (1) DK1169884T3 (en)
WO (1) WO2000064217A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2818487B1 (en) * 2000-12-14 2006-08-18 Albert Jakoubovitch MULTI-ENGINE SPEAKERS
DE102004032223A1 (en) * 2004-07-02 2006-01-19 Siemens Ag Audiovisual arrangement
DE102006056394B4 (en) * 2006-11-29 2010-05-20 Siemens Ag lighting device
DE102007003164A1 (en) * 2007-01-22 2008-07-24 Siemens Ag Acoustic reproducing apparatus and method for reproducing an acoustic signal
DE102007003165A1 (en) 2007-01-22 2008-07-24 Siemens Ag Area loudspeaker and method for adjusting the vibration behavior of a vibration system
DE102007062875A1 (en) * 2007-12-28 2009-07-09 Siemens Aktiengesellschaft Flat surface loudspeaker, has bending resistant plate excited by flexural vibration for radiating sound via electromechanical transducers, and mechanical-electrical transducer for generating measuring signal corresponding to sound
WO2016003962A1 (en) * 2014-07-01 2016-01-07 Corning Incorporated Cross-cancellation of audio signals in a stereo flat panel speaker
CN114584896B (en) * 2022-02-25 2023-10-31 苏州清听声学科技有限公司 Frequency response curve testing method and system for parametric array loudspeaker

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0145997B2 (en) * 1983-11-28 1996-01-10 Peter Michael Dipl.-Ing. Pfleiderer Reproduction errors compensation device for electroacoustic transducers
NL8401823A (en) * 1984-06-08 1986-01-02 Philips Nv DEVICE FOR CONVERTING AN ELECTRIC SIGNAL TO AN ACOUSTIC SIGNAL OR REVERSE AND A NON-LINEAR NETWORK FOR USE IN THE DEVICE.
GB2265519A (en) * 1992-03-19 1993-09-29 Jonathan Neil Smith Flat monopole loudspeaker
FI921817A (en) * 1992-04-23 1993-10-24 Salon Televisiotehdas Oy FOERFARANDE OCH SYSTEM FOER AOTERGIVNING AV AUDIOFREKVENSER
JP3167259B2 (en) * 1994-05-06 2001-05-21 三菱電機株式会社 Sound reproduction device
YU36800A (en) * 1998-01-20 2002-03-18 New Transducers Limited Active acoustic device comprising panel members

Also Published As

Publication number Publication date
ATE243910T1 (en) 2003-07-15
JP2002542745A (en) 2002-12-10
AU1768700A (en) 2000-11-02
EP1169884B1 (en) 2003-06-25
DE59906131D1 (en) 2003-07-31
EP1169884A1 (en) 2002-01-09
WO2000064217A1 (en) 2000-10-26
DE19917584A1 (en) 2000-10-26
AU767985B2 (en) 2003-11-27

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