BR9913954A - Alto-falante paramétrico com um transdutor com diafragma eletro-acústico - Google Patents

Alto-falante paramétrico com um transdutor com diafragma eletro-acústico

Info

Publication number
BR9913954A
BR9913954A BR9913954-5A BR9913954A BR9913954A BR 9913954 A BR9913954 A BR 9913954A BR 9913954 A BR9913954 A BR 9913954A BR 9913954 A BR9913954 A BR 9913954A
Authority
BR
Brazil
Prior art keywords
parametric speaker
transducer
film
film transducers
diaphragm
Prior art date
Application number
BR9913954-5A
Other languages
English (en)
Inventor
Alan Robert Selfridge
Pierre Khuri-Yakub
Elwood G Norris
James J Croft Iii
Original Assignee
American Tech 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 American Tech Corp filed Critical American Tech Corp
Publication of BR9913954A publication Critical patent/BR9913954A/pt

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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

Landscapes

  • 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)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

Patente de Invenção: "ALTO-FALANTE PARAMéTRICO COM UM TRANSDUTOR COM DIAFRAGMA ELETROACúSTICO". A presente invenção refere-se a um alto-falante paramétrico que gera diretamente múltiplas freq³ências altas de modo a indiretamente criar freq³ências menores através do uso de transdutores de filme substancialmente monolíticos, de modo geral maiores do que um comprimento de onda da freq³ência portadora em diâmetro ou em seção transversal. Estes transdutores de filme (33) incluem um filme mecânico eletrotérmico, de PVDF, elétrico, eletrostático, e configurações magnéticas planares. Podem ser usadas estruturas ou estatores de suporte de metal, espuma, plástico ou de madeira (31) a fim de suportar os transdutores de filme. Uma configuração alternativa pode incluir um diafragma móvel estirado ao longo do membro de núcleo e deslocado a uma distância curta dentro de uma porção forte de um campo magnético. Pelo menos uma bobina condutiva, planar, de massa baixa fica disposta sobre o diafragma móvel e inclui dois contatos a fim de permitir que as ondas de compressão de fluxo de corrente possam ser ajustadas no sentido de incluírem uma faixa de freq³ência ultra-sónica.
BR9913954-5A 1998-09-24 1999-08-26 Alto-falante paramétrico com um transdutor com diafragma eletro-acústico BR9913954A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15944298A 1998-09-24 1998-09-24
PCT/US1999/019580 WO2000018182A1 (en) 1998-09-24 1999-08-26 Parametric loudspeaker with electro-acoustical diaphragm transducer

Publications (1)

Publication Number Publication Date
BR9913954A true BR9913954A (pt) 2002-02-13

Family

ID=22572623

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9913954-5A BR9913954A (pt) 1998-09-24 1999-08-26 Alto-falante paramétrico com um transdutor com diafragma eletro-acústico

Country Status (8)

Country Link
EP (1) EP1123634A4 (pt)
JP (1) JP2002526004A (pt)
CN (2) CN1620195A (pt)
AU (1) AU5902099A (pt)
BR (1) BR9913954A (pt)
CA (1) CA2345339A1 (pt)
HK (1) HK1041763A1 (pt)
WO (1) WO2000018182A1 (pt)

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RU2571588C2 (ru) * 2014-07-24 2015-12-20 Владимир Анатольевич Ефремов Электронное устройство для автоматического перевода устной речи с одного языка на другой

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KR20050102143A (ko) * 2003-02-27 2005-10-25 코닌클리즈케 필립스 일렉트로닉스 엔.브이. 매체의 유용한 스트림을 발생시키는 발생 장치
JP4438444B2 (ja) 2004-02-19 2010-03-24 セイコーエプソン株式会社 超音波スピーカを搭載したプロジェクタ、及び該プロジェクタにおける音の再生範囲表示方法
JP2005354582A (ja) * 2004-06-14 2005-12-22 Seiko Epson Corp 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
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
KR100689876B1 (ko) 2004-12-20 2007-03-09 삼성전자주식회사 초음파 변환 재생방법에 의한 음향재생 스크린
JP2007028205A (ja) 2005-07-15 2007-02-01 Sony Corp 電気音響変換器およびその振動膜成型方法
CN101558659B (zh) * 2006-05-22 2013-02-13 奥迪欧彼塞尔斯有限公司 直接数字扬声器中的音量和音调控制
KR101000291B1 (ko) * 2007-12-20 2010-12-13 한국전자통신연구원 비선형 매질을 통한 음향 송신 장치 및 방법
CN102082551A (zh) * 2010-12-16 2011-06-01 瑞声声学科技(深圳)有限公司 声参量阵音频重放系统及其调制方法
US20130257552A1 (en) * 2010-12-20 2013-10-03 Yasuharu Onishi Oscillator device and electronic instrument
JP5954181B2 (ja) * 2010-12-20 2016-07-20 日本電気株式会社 発振装置および電子機器
CN103220606B (zh) * 2012-01-20 2015-10-21 中华大学 电声转换器及其制造方法
JP6315616B2 (ja) 2012-06-12 2018-04-25 ジョセフ ポンペイ フランク 超音波トランスデューサ
US9002043B2 (en) 2013-02-20 2015-04-07 Turtle Beach Corporation Parametric transducer and related methods
US8718297B1 (en) * 2013-02-20 2014-05-06 Parametric Sound Corporation Parametric transducer and related methods
CN103152659A (zh) * 2013-02-26 2013-06-12 广东欧珀移动通信有限公司 一种压电陶瓷扬声器保护装置及移动终端
EP2994944B1 (en) * 2013-05-08 2018-08-01 Dalhousie University Acoustic transmitter and implantable receiver
US9332344B2 (en) 2013-06-13 2016-05-03 Turtle Beach Corporation Self-bias emitter circuit
JP6255994B2 (ja) 2013-06-27 2018-01-10 株式会社リコー エネルギー変換装置
EP3013736A1 (en) * 2013-06-27 2016-05-04 MiniPumps, LLC Method of making a corrugated deflection diaphragm
US9976713B2 (en) 2013-07-05 2018-05-22 Qualcomm Incorporated Apparatus and method for providing a frequency response for audio signals
JP6365164B2 (ja) * 2014-09-18 2018-08-01 株式会社村田製作所 振動装置および触覚提示装置
USRE49437E1 (en) 2014-09-30 2023-02-28 Apple Inc. Audio driver and power supply unit architecture
EP3416406A1 (en) 2014-09-30 2018-12-19 Apple Inc. Loudspeaker with reduced audio coloration caused by reflections from a surface
CN104688192B (zh) * 2015-03-31 2017-06-06 西安交通大学 基于差频超声的音频声源产生和气道特性测试方法与系统
WO2017079435A1 (en) * 2015-11-03 2017-05-11 Nrg Systems, Inc. Techniques for providing a broad-band ultrasonic transducer device using a plurality of narrow-band transducer arrays and a method of wildlife deterrence using same
US10834497B2 (en) 2016-09-23 2020-11-10 Apple Inc. User interface cooling using audio component
TWI626854B (zh) * 2016-11-24 2018-06-11 財團法人金屬工業研究發展中心 具立體形貌之駐極體薄膜的製作方法及其產品
WO2019199978A1 (en) * 2018-04-10 2019-10-17 Nrg Systems, Inc. Techniques for providing acoustic impedance matching for a broad-band ultrasonic transducer device and a method of wildlife deterrence using same
CN109168108B (zh) * 2018-10-24 2021-03-02 维沃移动通信有限公司 电声器件振幅调整方法、装置和移动终端
CN112004176B (zh) * 2020-08-19 2021-05-07 厦门大学 一种实现水下宽带准直的水声换能装置
US20220183659A1 (en) * 2020-12-15 2022-06-16 Sonicedge Ltd. Earphone Driver And Applications
CN117560607B (zh) * 2023-12-29 2024-04-05 汉得利（常州）电子股份有限公司 一种超声扬声器

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2571588C2 (ru) * 2014-07-24 2015-12-20 Владимир Анатольевич Ефремов Электронное устройство для автоматического перевода устной речи с одного языка на другой

Also Published As

Publication number Publication date
WO2000018182A1 (en) 2000-03-30
CN1620195A (zh) 2005-05-25
CN1331901A (zh) 2002-01-16
HK1041763A1 (en) 2002-07-19
EP1123634A1 (en) 2001-08-16
CN1181704C (zh) 2004-12-22
JP2002526004A (ja) 2002-08-13
EP1123634A4 (en) 2006-04-19
CA2345339A1 (en) 2000-03-30
AU5902099A (en) 2000-04-10

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]