ATE509708T1 - ULTRASONIC TRANSDUCER FOR GENERATING ASYMMETRIC SOUND FIELDS - Google Patents

ULTRASONIC TRANSDUCER FOR GENERATING ASYMMETRIC SOUND FIELDS

Info

Publication number
ATE509708T1
ATE509708T1 AT08869632T AT08869632T ATE509708T1 AT E509708 T1 ATE509708 T1 AT E509708T1 AT 08869632 T AT08869632 T AT 08869632T AT 08869632 T AT08869632 T AT 08869632T AT E509708 T1 ATE509708 T1 AT E509708T1
Authority
AT
Austria
Prior art keywords
diaphragm
ultrasonic transducer
sound fields
asymmetric sound
generating asymmetric
Prior art date
Application number
AT08869632T
Other languages
German (de)
Inventor
Christian Degel
Daniel Schmitt
Original Assignee
Fraunhofer Ges Forschung
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 Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Application granted granted Critical
Publication of ATE509708T1 publication Critical patent/ATE509708T1/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/122—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using piezoelectric driving means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Surgical Instruments (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

The invention relates to an ultrasonic transducer for generating asymmetric sound fields. Said ultrasonic transducer comprises a housing (1) that encompasses an elongate diaphragm (2) and a plate-shaped transducer element (3) which is arranged on one side of a main surface of the diaphragm (2), is made of an electrostrictive material, and allows the diaphragm (2) to be excited to generate oscillations in the ultrasonic range. A gap is formed between the diaphragm (2) and the transducer element (3), the diaphragm (2) being coupled to the transducer element (3) exclusively along the edge thereof. Such an ultrasonic transducer makes it possible to generate asymmetric sound fields which have an aperture ratio of 1:3 or more.
AT08869632T 2008-01-09 2008-12-19 ULTRASONIC TRANSDUCER FOR GENERATING ASYMMETRIC SOUND FIELDS ATE509708T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008003594 2008-01-09
PCT/DE2008/002140 WO2009086805A1 (en) 2008-01-09 2008-12-19 Ultrasonic transducer for generating asymmetric sound fields

Publications (1)

Publication Number Publication Date
ATE509708T1 true ATE509708T1 (en) 2011-06-15

Family

ID=40622175

Family Applications (1)

Application Number Title Priority Date Filing Date
AT08869632T ATE509708T1 (en) 2008-01-09 2008-12-19 ULTRASONIC TRANSDUCER FOR GENERATING ASYMMETRIC SOUND FIELDS

Country Status (4)

Country Link
EP (1) EP2229242B1 (en)
AT (1) ATE509708T1 (en)
DE (1) DE112008003772A5 (en)
WO (1) WO2009086805A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010053713A1 (en) * 2010-12-07 2012-06-14 Continental Automotive Gmbh An electroacoustic transducer assembly and method of operating an electroacoustic transducer assembly
DE102012201884A1 (en) * 2012-02-09 2013-08-14 Robert Bosch Gmbh transducer
GB201409547D0 (en) * 2014-05-29 2014-07-16 Gill Instr Ltd An electroacoustic transducer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4330747C1 (en) * 1993-09-10 1995-02-16 Siemens Ag Ultrasonic transducer and method for producing it
US6443901B1 (en) * 2000-06-15 2002-09-03 Koninklijke Philips Electronics N.V. Capacitive micromachined ultrasonic transducers
JP3915448B2 (en) * 2001-07-30 2007-05-16 日本ビクター株式会社 Electroacoustic transducer
DE102006050037A1 (en) * 2006-10-24 2008-04-30 Robert Bosch Gmbh Ultrasonic transducer for motor vehicle, has damping unit for damping vibrations of wall, arranged in diaphragm pot in edge section of diaphragm and connected with edge section and inner side of wall in force-fitting manner

Also Published As

Publication number Publication date
DE112008003772A5 (en) 2010-12-09
EP2229242B1 (en) 2011-05-18
EP2229242A1 (en) 2010-09-22
WO2009086805A1 (en) 2009-07-16

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