EP1248491A3 - Ultraschallbasiertes parametrisches Lautsprechersystem - Google Patents
Ultraschallbasiertes parametrisches Lautsprechersystem Download PDFInfo
- Publication number
- EP1248491A3 EP1248491A3 EP02007545A EP02007545A EP1248491A3 EP 1248491 A3 EP1248491 A3 EP 1248491A3 EP 02007545 A EP02007545 A EP 02007545A EP 02007545 A EP02007545 A EP 02007545A EP 1248491 A3 EP1248491 A3 EP 1248491A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- speaker system
- modulator
- parametric speaker
- ultrasonic
- frequency
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 abstract 3
- 230000005236 sound signal Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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
- H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/10—Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
-
- 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
- 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)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10117529 | 2001-04-07 | ||
DE10117529A DE10117529B4 (de) | 2001-04-07 | 2001-04-07 | Ultraschallbasiertes parametrisches Lautsprechersystem |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1248491A2 EP1248491A2 (de) | 2002-10-09 |
EP1248491A3 true EP1248491A3 (de) | 2004-01-07 |
EP1248491B1 EP1248491B1 (de) | 2006-05-31 |
Family
ID=7680859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02007545A Expired - Lifetime EP1248491B1 (de) | 2001-04-07 | 2002-04-03 | Ultraschallbasiertes parametrisches Lautsprechersystem |
Country Status (5)
Country | Link |
---|---|
US (1) | US7181025B2 (de) |
EP (1) | EP1248491B1 (de) |
JP (1) | JP2002315088A (de) |
AT (1) | ATE328455T1 (de) |
DE (2) | DE10117528B4 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10117529B4 (de) * | 2001-04-07 | 2005-04-28 | Daimler Chrysler Ag | Ultraschallbasiertes parametrisches Lautsprechersystem |
WO2005043771A1 (en) * | 2003-10-23 | 2005-05-12 | American Technology Corporation | Method of adusting linear parameters of a parametric ultrasonic signal to reduce non-linearities in decoupled audio output waves and system including same |
JP4371268B2 (ja) | 2003-12-18 | 2009-11-25 | シチズンホールディングス株式会社 | 指向性スピーカーの駆動方法および指向性スピーカー |
JP2008504566A (ja) * | 2004-06-28 | 2008-02-14 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 音響送信装置、音響受信装置、周波数範囲適応装置、音響信号送信方法 |
JP4124182B2 (ja) * | 2004-08-27 | 2008-07-23 | ヤマハ株式会社 | アレイスピーカ装置 |
CN1964219B (zh) * | 2005-11-11 | 2016-01-20 | 上海贝尔股份有限公司 | 实现中继的方法和设备 |
JP4783921B2 (ja) * | 2006-03-13 | 2011-09-28 | 三菱電機エンジニアリング株式会社 | 超指向性スピーカー |
DE202009017930U1 (de) | 2008-03-11 | 2010-10-07 | Merkel, Tobias, Dr. | Virtuelles Mikrofon mit fremdmoduliertem Ultraschall |
US8976980B2 (en) | 2011-03-24 | 2015-03-10 | Texas Instruments Incorporated | Modulation of audio signals in a parametric speaker |
JP5817182B2 (ja) * | 2011-03-31 | 2015-11-18 | 日本電気株式会社 | スピーカ装置及び電子機器 |
US10757506B2 (en) | 2014-08-28 | 2020-08-25 | Nanyang Technological University | Amplifier circuit for a parametric transducer and a related audio device |
US9780753B2 (en) * | 2014-11-05 | 2017-10-03 | Turtle Beach Corporation | Adaptive equalization for an ultrasonic audio system |
CN107864020B (zh) * | 2017-11-07 | 2021-02-19 | 哈尔滨工程大学 | 水下小目标单分量声散射回波的变换域提取方法 |
WO2019212077A1 (ko) * | 2018-05-04 | 2019-11-07 | 주식회사 제이디솔루션 | 안정성이 증가된 초지향성 스피커 회로{ultra directional speaker circuit with enhanced stability} |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02265400A (ja) * | 1989-04-05 | 1990-10-30 | Matsushita Electric Works Ltd | 拡声器 |
US6044160A (en) * | 1998-01-13 | 2000-03-28 | American Technology Corporation | Resonant tuned, ultrasonic electrostatic emitter |
WO2001008449A1 (de) * | 1999-04-30 | 2001-02-01 | Sennheiser Electronic Gmbh & Co. Kg | Verfahren zur wiedergabe von audioschall mit ultraschall-lautsprechern |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1951669A (en) * | 1931-07-17 | 1934-03-20 | Ramsey George | Method and apparatus for producing sound |
US2371373A (en) * | 1943-06-12 | 1945-03-13 | Rca Corp | Balanced frequency modulation system |
US3418564A (en) * | 1966-04-11 | 1968-12-24 | Varian Associates | Field modulated gyromagnetic resonance spectrometer detecting only the fm carrier resonance component |
DE3590430T1 (de) * | 1984-08-28 | 1986-09-18 | Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka | Lautsprechersystem mit ausgeprägter Richtwirkung |
DE3929243A1 (de) * | 1989-09-02 | 1991-03-07 | Rump Elektronik Tech | Apparat und verfahren zur verkuerzung der ausklingzeit in ultraschall-impuls-sendeeinrichtungen |
US5357578A (en) * | 1992-11-24 | 1994-10-18 | Canon Kabushiki Kaisha | Acoustic output device, and electronic apparatus using the acoustic output device |
US5917776A (en) * | 1996-12-31 | 1999-06-29 | Honeywell Inc. | Means for reducing minimum sensing distance of an ultrasonic proximity sensor |
US6011855A (en) * | 1997-03-17 | 2000-01-04 | American Technology Corporation | Piezoelectric film sonic emitter |
US6359990B1 (en) * | 1997-04-30 | 2002-03-19 | American Technology Corporation | Parametric ring emitter |
JP4221792B2 (ja) * | 1998-01-09 | 2009-02-12 | ソニー株式会社 | スピーカ装置及びオーディオ信号送信装置 |
US6850623B1 (en) * | 1999-10-29 | 2005-02-01 | American Technology Corporation | Parametric loudspeaker with improved phase characteristics |
DE19931386C2 (de) * | 1999-07-07 | 2003-10-09 | Innomar Technologie Gmbh | Anordnung zum Empfang von Signalen bei parametrischer Sendung zur Echolotung des Bodens, von Sedimentschichten und von Objekten am und im Boden sowie zur Unterwassernachrichtenübertragung |
-
2001
- 2001-04-07 DE DE10117528A patent/DE10117528B4/de not_active Expired - Fee Related
-
2002
- 2002-04-03 DE DE50206958T patent/DE50206958D1/de not_active Expired - Lifetime
- 2002-04-03 AT AT02007545T patent/ATE328455T1/de not_active IP Right Cessation
- 2002-04-03 EP EP02007545A patent/EP1248491B1/de not_active Expired - Lifetime
- 2002-04-08 JP JP2002105718A patent/JP2002315088A/ja active Pending
- 2002-04-08 US US10/118,630 patent/US7181025B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02265400A (ja) * | 1989-04-05 | 1990-10-30 | Matsushita Electric Works Ltd | 拡声器 |
US6044160A (en) * | 1998-01-13 | 2000-03-28 | American Technology Corporation | Resonant tuned, ultrasonic electrostatic emitter |
WO2001008449A1 (de) * | 1999-04-30 | 2001-02-01 | Sennheiser Electronic Gmbh & Co. Kg | Verfahren zur wiedergabe von audioschall mit ultraschall-lautsprechern |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 015, no. 018 (E - 1023) 16 January 1991 (1991-01-16) * |
YONEYAMA M ET AL: "THE AUDIO SPOTLIGHT: AN APPLICATION OF NONLINEAR INTERACTION OF SOUND WAVES TO A NEW TYPE OF LOUDSPEAKER DESIGN", JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, AMERICAN INSTITUTE OF PHYSICS. NEW YORK, US, vol. 73, no. 5, May 1983 (1983-05-01), pages 1532 - 1536, XP000762272, ISSN: 0001-4966 * |
Also Published As
Publication number | Publication date |
---|---|
US7181025B2 (en) | 2007-02-20 |
EP1248491B1 (de) | 2006-05-31 |
JP2002315088A (ja) | 2002-10-25 |
DE50206958D1 (de) | 2006-07-06 |
EP1248491A2 (de) | 2002-10-09 |
US20020172375A1 (en) | 2002-11-21 |
ATE328455T1 (de) | 2006-06-15 |
DE10117528B4 (de) | 2004-04-01 |
DE10117528A1 (de) | 2003-02-06 |
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