WO2002028142A3 - Electrostatic acoustic device - Google Patents

Electrostatic acoustic device Download PDF

Info

Publication number
WO2002028142A3
WO2002028142A3 PCT/EP2001/011212 EP0111212W WO0228142A3 WO 2002028142 A3 WO2002028142 A3 WO 2002028142A3 EP 0111212 W EP0111212 W EP 0111212W WO 0228142 A3 WO0228142 A3 WO 0228142A3
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
electrical field
main portion
acoustic device
peripheral portion
Prior art date
Application number
PCT/EP2001/011212
Other languages
French (fr)
Other versions
WO2002028142A2 (en
Inventor
Geuk Yeon Kim
Original Assignee
Thomson Licensing Sa
Geuk Yeon Kim
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 Thomson Licensing Sa, Geuk Yeon Kim filed Critical Thomson Licensing Sa
Priority to AU2002212288A priority Critical patent/AU2002212288A1/en
Publication of WO2002028142A2 publication Critical patent/WO2002028142A2/en
Publication of WO2002028142A3 publication Critical patent/WO2002028142A3/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
    • H04R19/00—Electrostatic transducers

Abstract

In order to enhance the sound pressure of loudspeakers there is provided an electrostatic acoustic device having a first electrode (6) for applying an electrical field, a diaphragm (8) with a main portion, a peripheral portion and an elastic portion (9) between the main portion and the peripheral portion and fixing means (10) for fixing the peripheral portion of the diaphragm (8) to the first electrode(6), wherein the main portion of the diaphragm (8) is movable by the electrical field and wherein the elastic portion (9) of the diaphragm (8) is deformed during movement of the diaphragm (8), whereas the shape of the main portion of the diaphragm (8) is essentially maintained, when substantially constant surface force is applied to the entire surface of the diaphragm (8) by the electrical field.
PCT/EP2001/011212 2000-09-29 2001-09-27 Electrostatic acoustic device WO2002028142A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002212288A AU2002212288A1 (en) 2000-09-29 2001-09-27 Electrostatic acoustic device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP00402687A EP1194004A1 (en) 2000-09-29 2000-09-29 Electrostatic acoustic device
EP00402687.8 2000-09-29

Publications (2)

Publication Number Publication Date
WO2002028142A2 WO2002028142A2 (en) 2002-04-04
WO2002028142A3 true WO2002028142A3 (en) 2002-09-19

Family

ID=8173886

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/011212 WO2002028142A2 (en) 2000-09-29 2001-09-27 Electrostatic acoustic device

Country Status (3)

Country Link
EP (1) EP1194004A1 (en)
AU (1) AU2002212288A1 (en)
WO (1) WO2002028142A2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892927A (en) * 1973-09-04 1975-07-01 Theodore Lindenberg Full range electrostatic loudspeaker for audio frequencies
EP0616485A1 (en) * 1993-03-16 1994-09-21 Walter Schmid Electrostatic transducer
US5471540A (en) * 1992-10-24 1995-11-28 Sony Corporation Electrostatic loudspeaker having stationary electrodes formed as multiple sheets insulated from each other
NL9400923A (en) * 1994-06-08 1996-01-02 Cornelis Ruijtenberg Transducer of an electrostatic loudspeaker and method for the production of an insulated stator plate of a transducer of this type
DE19641503A1 (en) * 1996-10-09 1998-05-20 Norman Gerkinsmeyer Electrostatic loudspeaker with optional circular radiation characteristic

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892927A (en) * 1973-09-04 1975-07-01 Theodore Lindenberg Full range electrostatic loudspeaker for audio frequencies
US5471540A (en) * 1992-10-24 1995-11-28 Sony Corporation Electrostatic loudspeaker having stationary electrodes formed as multiple sheets insulated from each other
EP0616485A1 (en) * 1993-03-16 1994-09-21 Walter Schmid Electrostatic transducer
NL9400923A (en) * 1994-06-08 1996-01-02 Cornelis Ruijtenberg Transducer of an electrostatic loudspeaker and method for the production of an insulated stator plate of a transducer of this type
DE19641503A1 (en) * 1996-10-09 1998-05-20 Norman Gerkinsmeyer Electrostatic loudspeaker with optional circular radiation characteristic

Also Published As

Publication number Publication date
EP1194004A1 (en) 2002-04-03
WO2002028142A2 (en) 2002-04-04
AU2002212288A1 (en) 2002-04-08

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