NO970883L - Elektroakustisk transduser - Google Patents

Elektroakustisk transduser

Info

Publication number
NO970883L
NO970883L NO970883A NO970883A NO970883L NO 970883 L NO970883 L NO 970883L NO 970883 A NO970883 A NO 970883A NO 970883 A NO970883 A NO 970883A NO 970883 L NO970883 L NO 970883L
Authority
NO
Norway
Prior art keywords
membranes
elongated
electroacoustic transducer
stated
magnetic elements
Prior art date
Application number
NO970883A
Other languages
English (en)
Norwegian (no)
Other versions
NO970883D0 (no
Inventor
Bo Bengtsson
Original Assignee
Centara Patent Ab
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 Centara Patent Ab filed Critical Centara Patent Ab
Publication of NO970883D0 publication Critical patent/NO970883D0/no
Publication of NO970883L publication Critical patent/NO970883L/no

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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/08—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers separated by air or other fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
NO970883A 1994-08-29 1997-02-27 Elektroakustisk transduser NO970883L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9402871A SE503180C2 (sv) 1994-08-29 1994-08-29 Elektroakustisk omvandlare
PCT/SE1995/000971 WO1996007294A1 (en) 1994-08-29 1995-08-29 Electro-acoustic transducer

Publications (2)

Publication Number Publication Date
NO970883D0 NO970883D0 (no) 1997-02-27
NO970883L true NO970883L (no) 1997-04-16

Family

ID=20395054

Family Applications (1)

Application Number Title Priority Date Filing Date
NO970883A NO970883L (no) 1994-08-29 1997-02-27 Elektroakustisk transduser

Country Status (9)

Country Link
US (1) US5912863A ( )
EP (1) EP0777952A1 ( )
JP (1) JPH10511234A ( )
AU (1) AU709172B2 ( )
CA (1) CA2198734A1 ( )
FI (1) FI970838A7 ( )
NO (1) NO970883L ( )
SE (1) SE503180C2 ( )
WO (1) WO1996007294A1 ( )

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19757099A1 (de) * 1997-12-20 1999-06-24 Nokia Deutschland Gmbh Kontaktierung für eine Schallwiedergabeanordnung nach dem Biegewellenprinzip
SE0001461L (sv) * 2000-04-18 2001-10-19 Erik Liljehag Elektroakustisk omvandlare
US8031901B2 (en) * 2006-09-14 2011-10-04 Bohlender Graebener Corporation Planar speaker driver
US8116512B2 (en) 2006-09-14 2012-02-14 Bohlender Graebener Corporation Planar speaker driver
US8000170B2 (en) 2008-11-20 2011-08-16 Analog Devices, Inc. Systems and methods for acoustic beamforming using discrete or continuous speaker arrays

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3636278A (en) * 1969-02-19 1972-01-18 Heil Scient Lab Inc Acoustic transducer with a diaphragm forming a plurality of adjacent narrow air spaces open only at one side with the open sides of adjacent air spaces alternatingly facing in opposite directions
CA1067201A (en) * 1974-11-25 1979-11-27 Oskar Heil Low frequency electro-acoustic transducer
US4703510A (en) * 1982-06-17 1987-10-27 Larson David A Electro-acoustic transducer with diaphragm and blank therefor
US4837838A (en) * 1987-03-30 1989-06-06 Eminent Technology, Inc. Electromagnetic transducer of improved efficiency
US4792978A (en) * 1987-08-28 1988-12-20 Marquiss Stanley L Planar loudspeaker system
US5003610A (en) * 1988-04-14 1991-03-26 Fostex Corporation Whole surface driven speaker

Also Published As

Publication number Publication date
EP0777952A1 (en) 1997-06-11
WO1996007294A1 (en) 1996-03-07
AU3402895A (en) 1996-03-22
CA2198734A1 (en) 1996-03-07
NO970883D0 (no) 1997-02-27
FI970838A0 (fi) 1997-02-27
US5912863A (en) 1999-06-15
JPH10511234A (ja) 1998-10-27
FI970838L (fi) 1997-02-27
SE9402871D0 (sv) 1994-08-29
SE9402871L (sv) 1996-03-01
SE503180C2 (sv) 1996-04-15
AU709172B2 (en) 1999-08-26
FI970838A7 (fi) 1997-02-27

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application