JP4802998B2 - 静電型超音波トランスデューサの駆動制御方法、静電型超音波トランスデューサ、これを用いた超音波スピーカ、音声信号再生方法、超指向性音響システム及び表示装置 - Google Patents

静電型超音波トランスデューサの駆動制御方法、静電型超音波トランスデューサ、これを用いた超音波スピーカ、音声信号再生方法、超指向性音響システム及び表示装置 Download PDF

Info

Publication number
JP4802998B2
JP4802998B2 JP2006318700A JP2006318700A JP4802998B2 JP 4802998 B2 JP4802998 B2 JP 4802998B2 JP 2006318700 A JP2006318700 A JP 2006318700A JP 2006318700 A JP2006318700 A JP 2006318700A JP 4802998 B2 JP4802998 B2 JP 4802998B2
Authority
JP
Japan
Prior art keywords
electrode
hole
wave
ultrasonic
ultrasonic transducer
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.)
Expired - Fee Related
Application number
JP2006318700A
Other languages
English (en)
Japanese (ja)
Other versions
JP2007195150A5 (https=
JP2007195150A (ja
Inventor
欣也 松澤
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP2006318700A priority Critical patent/JP4802998B2/ja
Priority to US11/566,803 priority patent/US7907740B2/en
Publication of JP2007195150A publication Critical patent/JP2007195150A/ja
Publication of JP2007195150A5 publication Critical patent/JP2007195150A5/ja
Application granted granted Critical
Publication of JP4802998B2 publication Critical patent/JP4802998B2/ja
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
    • H04R2201/401—2D or 3D arrays of transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2217/00—Details of magnetostrictive, piezoelectric, or electrostrictive transducers covered by H04R15/00 or H04R17/00 but not provided for in any of their subgroups
    • H04R2217/03—Parametric transducers where sound is generated or captured by the acoustic demodulation of amplitude modulated ultrasonic waves
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
JP2006318700A 2005-12-19 2006-11-27 静電型超音波トランスデューサの駆動制御方法、静電型超音波トランスデューサ、これを用いた超音波スピーカ、音声信号再生方法、超指向性音響システム及び表示装置 Expired - Fee Related JP4802998B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2006318700A JP4802998B2 (ja) 2005-12-19 2006-11-27 静電型超音波トランスデューサの駆動制御方法、静電型超音波トランスデューサ、これを用いた超音波スピーカ、音声信号再生方法、超指向性音響システム及び表示装置
US11/566,803 US7907740B2 (en) 2005-12-19 2006-12-05 Electrostatic ultrasonic transducer drive control method, electrostatic ultrasonic transducer, ultrasonic speaker using the same, audio signal reproduction method, ultra-directional acoustic system, and display device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2005364371 2005-12-19
JP2005364371 2005-12-19
JP2006318700A JP4802998B2 (ja) 2005-12-19 2006-11-27 静電型超音波トランスデューサの駆動制御方法、静電型超音波トランスデューサ、これを用いた超音波スピーカ、音声信号再生方法、超指向性音響システム及び表示装置

Publications (3)

Publication Number Publication Date
JP2007195150A JP2007195150A (ja) 2007-08-02
JP2007195150A5 JP2007195150A5 (https=) 2010-01-07
JP4802998B2 true JP4802998B2 (ja) 2011-10-26

Family

ID=38289918

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006318700A Expired - Fee Related JP4802998B2 (ja) 2005-12-19 2006-11-27 静電型超音波トランスデューサの駆動制御方法、静電型超音波トランスデューサ、これを用いた超音波スピーカ、音声信号再生方法、超指向性音響システム及び表示装置

Country Status (2)

Country Link
US (1) US7907740B2 (https=)
JP (1) JP4802998B2 (https=)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7313242B2 (en) * 2004-03-16 2007-12-25 Palo Alto Research Center Incorporated Hypersonic transducer
JP3873990B2 (ja) * 2004-06-11 2007-01-31 セイコーエプソン株式会社 超音波トランスデューサ及びこれを用いた超音波スピーカ
JP5103873B2 (ja) * 2005-12-07 2012-12-19 セイコーエプソン株式会社 静電型超音波トランスデューサの駆動制御方法、静電型超音波トランスデューサ、これを用いた超音波スピーカ、音声信号再生方法、超指向性音響システム及び表示装置
JP2007267368A (ja) * 2006-03-03 2007-10-11 Seiko Epson Corp スピーカ装置、音響再生方法、及びスピーカ制御装置
US8559660B2 (en) * 2007-07-12 2013-10-15 Industrial Technology Research Institute Electrostatic electroacoustic transducers
JP4998299B2 (ja) * 2008-02-04 2012-08-15 ヤマハ株式会社 静電型スピーカ
KR20110037332A (ko) * 2009-10-06 2011-04-13 삼성전기주식회사 인쇄회로기판 및 그 제조방법
JP5605036B2 (ja) 2010-07-12 2014-10-15 ヤマハ株式会社 静電型スピーカ
JP5655683B2 (ja) * 2010-07-15 2015-01-21 ヤマハ株式会社 静電型スピーカおよび静電型スピーカの製造方法
TW201204062A (en) * 2010-07-15 2012-01-16 Taiwan Electrets Electronics Co Ltd Electrostatic speaker and manufacturing method thereof and conducting plate of the speaker
RU2454783C1 (ru) * 2011-01-28 2012-06-27 Владимир Андреевич Степанец Способ генерации электроэнергии и емкостной электрополевой генератор на основе этого способа
US8805312B2 (en) * 2011-04-06 2014-08-12 Texas Instruments Incorporated Methods, circuits, systems and apparatus providing audio sensitivity enhancement in a wireless receiver, power management and other performances
US8718297B1 (en) * 2013-02-20 2014-05-06 Parametric Sound Corporation Parametric transducer and related methods
US9743201B1 (en) * 2013-03-14 2017-08-22 Apple Inc. Loudspeaker array protection management
US10291983B2 (en) 2013-03-15 2019-05-14 Elwha Llc Portable electronic device directed audio system and method
US9886941B2 (en) 2013-03-15 2018-02-06 Elwha Llc Portable electronic device directed audio targeted user system and method
US10531190B2 (en) 2013-03-15 2020-01-07 Elwha Llc Portable electronic device directed audio system and method
US20140269207A1 (en) * 2013-03-15 2014-09-18 Elwha Llc Portable Electronic Device Directed Audio Targeted User System and Method
US10181314B2 (en) * 2013-03-15 2019-01-15 Elwha Llc Portable electronic device directed audio targeted multiple user system and method
US10575093B2 (en) 2013-03-15 2020-02-25 Elwha Llc Portable electronic device directed audio emitter arrangement system and method
US9363597B1 (en) * 2013-08-21 2016-06-07 Turtle Beach Corporation Distance-based audio processing for parametric speaker system
WO2015054650A1 (en) * 2013-10-11 2015-04-16 Turtle Beach Corporation Improved parametric transducer with graphene conductive surface
US9232317B2 (en) 2013-10-11 2016-01-05 Turtle Beach Corporation Parametric transducer with graphene conductive surface
US20150104045A1 (en) * 2013-10-11 2015-04-16 Turtle Beach Corporation Ultrasonic emitter system with an integrated emitter and amplifier
US9113260B2 (en) 2013-10-21 2015-08-18 Turtle Beach Corporation Parametric transducer including visual indicia and related methods
US9258651B2 (en) 2013-10-17 2016-02-09 Turtle Beach Corporation Transparent parametric transducer and related methods
US9351083B2 (en) 2013-10-17 2016-05-24 Turtle Beach Corporation Transparent parametric emitter
EP3200479A3 (en) 2016-01-28 2017-08-30 Sonion Nederland B.V. An assembly comprising an electrostatic sound generator and a transformer
JP2016086445A (ja) * 2016-02-04 2016-05-19 パイオニア株式会社 通信制御システム及び方法、並びにコンピュータプログラム及び記録媒体
WO2018143757A1 (ko) * 2017-02-06 2018-08-09 포항공과대학교 산학협력단 초음파 방사기 및 초음파 방사기용 방사판의 제조 방법
US10581343B2 (en) * 2017-03-17 2020-03-03 Immersion Corporation Electret-based electrostatic haptic actuator
KR102075790B1 (ko) * 2018-06-29 2020-02-10 한국기계연구원 비접촉 초음파 트랜스듀서
CN109068245A (zh) 2018-08-01 2018-12-21 京东方科技集团股份有限公司 屏幕发声装置、发声显示屏及其制造方法和屏幕发声系统
CN109261477B (zh) * 2018-10-23 2025-01-21 浙江大学 一种具有刻蚀孔及分块式上电极的微机电压电超声波换能器
WO2020196863A1 (ja) * 2019-03-28 2020-10-01 住友理工株式会社 静電型トランスデューサおよび静電型トランスデューサユニット
US10645497B1 (en) * 2019-05-28 2020-05-05 Bose Corporation Surface treatments for silicone acoustic diaphragms
JP7424795B2 (ja) * 2019-10-31 2024-01-30 晃洋 古平 スピーカユニット
CN111107476B (zh) * 2020-02-22 2021-04-20 瑞声科技(新加坡)有限公司 微型扬声器
WO2023095829A1 (ja) * 2021-11-26 2023-06-01 株式会社村田製作所 超音波トランスデューサ

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH066899A (ja) * 1992-06-20 1994-01-14 Star Micronics Co Ltd 電気音響変換器の音圧特性の温度補償方法
JPH10252444A (ja) 1997-03-14 1998-09-22 Calsonic Corp 拡張構造の消音器
JP3510107B2 (ja) 1998-06-08 2004-03-22 株式会社日立製作所 電動送風機及びそれを搭載した電気掃除機
JP4294798B2 (ja) 1998-07-16 2009-07-15 マサチューセッツ・インスティテュート・オブ・テクノロジー 超音波トランスデューサ
JP2000050387A (ja) 1998-07-16 2000-02-18 Massachusetts Inst Of Technol <Mit> パラメトリックオ―ディオシステム
JP2004312394A (ja) 2003-04-07 2004-11-04 Seiko Epson Corp パラメトリックスピーカ用電気音響変換器およびパラメトリックスピーカ
JP4269869B2 (ja) 2003-10-02 2009-05-27 セイコーエプソン株式会社 超音波トランスデューサ
JP4352922B2 (ja) * 2004-02-09 2009-10-28 セイコーエプソン株式会社 超音波トランスデューサ
JP4103877B2 (ja) * 2004-09-22 2008-06-18 セイコーエプソン株式会社 静電型超音波トランスデューサ及び超音波スピーカ
JP4682927B2 (ja) * 2005-08-03 2011-05-11 セイコーエプソン株式会社 静電型超音波トランスデューサ、超音波スピーカ、音声信号再生方法、超音波トランスデューサの電極の製造方法、超音波トランスデューサの製造方法、超指向性音響システム、および表示装置

Also Published As

Publication number Publication date
JP2007195150A (ja) 2007-08-02
US20070154036A1 (en) 2007-07-05
US7907740B2 (en) 2011-03-15

Similar Documents

Publication Publication Date Title
JP4802998B2 (ja) 静電型超音波トランスデューサの駆動制御方法、静電型超音波トランスデューサ、これを用いた超音波スピーカ、音声信号再生方法、超指向性音響システム及び表示装置
JP4682927B2 (ja) 静電型超音波トランスデューサ、超音波スピーカ、音声信号再生方法、超音波トランスデューサの電極の製造方法、超音波トランスデューサの製造方法、超指向性音響システム、および表示装置
JP5103873B2 (ja) 静電型超音波トランスデューサの駆動制御方法、静電型超音波トランスデューサ、これを用いた超音波スピーカ、音声信号再生方法、超指向性音響システム及び表示装置
JP4844411B2 (ja) 静電型超音波トランスデューサ、静電型超音波トランスデューサの製造方法、超音波スピーカ、音声信号再生方法、超指向性音響システム及び表示装置
US8130973B2 (en) Superdirectional acoustic system and projector
US20080152172A1 (en) Electrostatic ultrasonic transducer, and ultrasonic speaker, audio signal reproduction method, ultra-directive sound system, and display apparatus using electrostatic ultrasonic transducer
JP4983171B2 (ja) 静電型トランスデューサ、容量性負荷の駆動回路、回路定数の設定方法、超音波スピーカ、および指向性音響システム
JP2008042869A (ja) 静電型超音波トランスデューサ、超音波スピーカ、音声信号再生方法、超指向性音響システム及び表示装置
JP3873990B2 (ja) 超音波トランスデューサ及びこれを用いた超音波スピーカ
JP2008244964A (ja) 静電型超音波トランスデューサ、静電型トランスデューサ、超音波スピーカ、スピーカ装置、静電型超音波トランスデューサによる音声信号再生方法、指向性音響システム、および表示装置
JP2008118247A (ja) 静電型超音波トランスデューサ、これを用いた超音波スピーカ、音声信号再生方法、超指向性音響システム及び表示装置
JP4803246B2 (ja) 超音波スピーカ、音声信号再生方法、超指向性音響システム
JP2008199342A (ja) 静電型トランスデューサ、静電型超音波トランスデューサ、超音波スピーカ、スピーカ装置、静電型トランスデューサによる音声信号再生方法、指向性音響システム、および表示装置
JP4803245B2 (ja) 静電型超音波トランスデューサ
JP4508030B2 (ja) 静電型超音波トランスデューサ及びこれを用いた超音波スピーカ
JP4867662B2 (ja) 静電型超音波トランスデューサ、超音波スピーカ、静電型超音波トランスデューサの音声信号再生方法
JP4508040B2 (ja) 静電型超音波トランスデューサ及びこれを用いた超音波スピーカ
JP2008048003A (ja) 静電型超音波トランスデューサ、これを用いた超音波スピーカ、静電型超音波トランスデューサの駆動制御方法、音声信号再生方法、超指向性音響システム及び表示装置
JP4241231B2 (ja) プロジェクタ
JP2005354473A (ja) 超音波トランスデューサ及びこれを用いた超音波スピーカ
JP2007228472A (ja) 静電型超音波トランスデューサ、静電型超音波トランスデューサの構成方法、および超音波スピーカ
JP2005354473A5 (https=)
JP2008258864A (ja) 静電型超音波トランスデューサ、超音波スピーカ、静電型超音波トランスデューサの音声信号再生方法、表示装置、および指向性音響システム
JP2008199341A (ja) 静電型トランスデューサ、超音波スピーカ、スピーカ装置、静電型トランスデューサによる音声信号再生方法、指向性音響システム、および表示装置

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20091111

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20091111

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20091112

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110708

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110712

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110725

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140819

Year of fee payment: 3

LAPS Cancellation because of no payment of annual fees