ATE211345T1 - Massnahmen zur verbesserung von lautsprechern - Google Patents

Massnahmen zur verbesserung von lautsprechern

Info

Publication number
ATE211345T1
ATE211345T1 AT96907605T AT96907605T ATE211345T1 AT E211345 T1 ATE211345 T1 AT E211345T1 AT 96907605 T AT96907605 T AT 96907605T AT 96907605 T AT96907605 T AT 96907605T AT E211345 T1 ATE211345 T1 AT E211345T1
Authority
AT
Austria
Prior art keywords
bit
input
digital
signal
receive
Prior art date
Application number
AT96907605T
Other languages
English (en)
Inventor
Anthony Hooley
Original Assignee
1 Ltd
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 1 Ltd filed Critical 1 Ltd
Application granted granted Critical
Publication of ATE211345T1 publication Critical patent/ATE211345T1/de

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation
    • 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
    • H04R1/005—Details of transducers, loudspeakers or microphones using digitally weighted transducing elements
    • 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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/227—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  using transducers reproducing the same frequency band
    • 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
    • H04R1/40—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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2203/00—Details of circuits for transducers, loudspeakers or microphones covered by H04R3/00 but not provided for in any of its subgroups
    • H04R2203/12—Beamforming aspects for stereophonic sound reproduction with loudspeaker arrays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems

Landscapes

  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Analogue/Digital Conversion (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Stereophonic System (AREA)
  • Amplifiers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Dc-Dc Converters (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Details Of Television Scanning (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
AT96907605T 1995-03-31 1996-03-27 Massnahmen zur verbesserung von lautsprechern ATE211345T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9506725.2A GB9506725D0 (en) 1995-03-31 1995-03-31 Improvements in or relating to loudspeakers
PCT/GB1996/000736 WO1996031086A1 (en) 1995-03-31 1996-03-27 Improvements in or relating to loudspeakers

Publications (1)

Publication Number Publication Date
ATE211345T1 true ATE211345T1 (de) 2002-01-15

Family

ID=10772301

Family Applications (2)

Application Number Title Priority Date Filing Date
AT96907605T ATE211345T1 (de) 1995-03-31 1996-03-27 Massnahmen zur verbesserung von lautsprechern
AT01108918T ATE306801T1 (de) 1995-03-31 1996-03-27 Digitaler pulsbreiten-modulationsgenerator

Family Applications After (1)

Application Number Title Priority Date Filing Date
AT01108918T ATE306801T1 (de) 1995-03-31 1996-03-27 Digitaler pulsbreiten-modulationsgenerator

Country Status (10)

Country Link
US (3) US6373955B1 (de)
EP (2) EP0818122B1 (de)
JP (1) JP3492698B2 (de)
CN (2) CN1147207C (de)
AT (2) ATE211345T1 (de)
AU (1) AU5117096A (de)
DE (2) DE69618183T2 (de)
DK (1) DK0818122T3 (de)
GB (1) GB9506725D0 (de)
WO (1) WO1996031086A1 (de)

Families Citing this family (114)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9506725D0 (en) * 1995-03-31 1995-05-24 Hooley Anthony Improvements in or relating to loudspeakers
FR2765765B1 (fr) * 1997-07-07 2002-12-06 Pierre Piccaluga Procede et appareil pour formater le signal audio numerique pour l'usage de la reproduction sonore
FR2790353B1 (fr) * 1999-02-25 2002-11-15 Olivier Viacava Enceinte audio-numerique effectuant la conversion numerique vers analogique directement dans l'air
DE19923170A1 (de) * 1999-05-21 2000-11-23 Florian M Koenig Volldigitale Tonsignal-Versorgung von Schallwandlern
DE69939976D1 (de) * 1999-05-28 2009-01-08 Texas Instruments Inc Digitaler Lautsprecher
EP1071218B1 (de) 1999-07-19 2009-09-09 Texas Instruments Inc. Differenzielle monadische Kodierung für digitales Audiosignal
EP1224037B1 (de) 1999-09-29 2007-10-31 1... Limited Verfahren und vorrichtung zur ausrichtung von schall mit einer gruppe von emissionswandlern
GB9926489D0 (en) * 1999-11-10 2000-01-12 New Transducers Ltd Digital loudspeaker
GB0009133D0 (en) * 2000-04-14 2000-05-31 New Transducers Ltd Acoustic device and method for driving it
DE10026474B4 (de) * 2000-05-27 2005-06-09 Sennheiser Electronic Gmbh & Co. Kg Wandler mit halbleitender Membran
US6895378B1 (en) * 2000-09-22 2005-05-17 Meyer Sound Laboratories, Incorporated System and method for producing acoustic response predictions via a communications network
US20020055827A1 (en) * 2000-10-06 2002-05-09 Chris Kyriakakis Modeling of head related transfer functions for immersive audio using a state-space approach
EP1206160A1 (de) * 2000-11-09 2002-05-15 Texas Instruments Incorporated Digitaler Lautsprecher
US7284256B2 (en) * 2000-12-04 2007-10-16 Sony Corporation Method and system to maintain relative statistics for creating automatically a list of favorites
US7058463B1 (en) 2000-12-29 2006-06-06 Nokia Corporation Method and apparatus for implementing a class D driver and speaker system
GB0102865D0 (en) 2001-02-06 2001-03-21 Secr Defence Brit Panel form loudspeaker
US20020131608A1 (en) * 2001-03-01 2002-09-19 William Lobb Method and system for providing digitally focused sound
KR100922910B1 (ko) * 2001-03-27 2009-10-22 캠브리지 메카트로닉스 리미티드 사운드 필드를 생성하는 방법 및 장치
GB0200291D0 (en) * 2002-01-08 2002-02-20 1 Ltd Digital loudspeaker system
SE0101720D0 (sv) * 2001-05-16 2001-05-16 Bang & Olufsen Powerhouse As Apparatus for electric to acoustic conversion
GB0124352D0 (en) 2001-10-11 2001-11-28 1 Ltd Signal processing device for acoustic transducer array
US7130430B2 (en) * 2001-12-18 2006-10-31 Milsap Jeffrey P Phased array sound system
JP3671910B2 (ja) * 2002-01-16 2005-07-13 日産自動車株式会社 回転電機の接続方法
GB0203895D0 (en) * 2002-02-19 2002-04-03 1 Ltd Compact surround-sound system
US7184480B1 (en) * 2002-09-25 2007-02-27 O2Micro International Limited Digital PWM generator
GB0301093D0 (en) * 2003-01-17 2003-02-19 1 Ltd Set-up method for array-type sound systems
US20040166817A1 (en) * 2003-01-20 2004-08-26 Mehran Mokhtari System, method and apparatus for burst communications
US7216248B2 (en) * 2003-03-20 2007-05-08 Sun Microsystems, Inc. On-chip clock generator allowing rapid changes of on-chip clock frequency
US7929718B1 (en) * 2003-05-12 2011-04-19 D2Audio Corporation Systems and methods for switching and mixing signals in a multi-channel amplifier
US7826622B2 (en) * 2003-05-27 2010-11-02 Harman International Industries, Incorporated Constant-beamwidth loudspeaker array
US7684574B2 (en) * 2003-05-27 2010-03-23 Harman International Industries, Incorporated Reflective loudspeaker array
JP4007255B2 (ja) 2003-06-02 2007-11-14 ヤマハ株式会社 アレースピーカーシステム
GB0321676D0 (en) * 2003-09-16 2003-10-15 1 Ltd Digital loudspeaker
US8170233B2 (en) 2004-02-02 2012-05-01 Harman International Industries, Incorporated Loudspeaker array system
US6822588B1 (en) * 2004-04-15 2004-11-23 Agilent Technologies, Inc. Pulse width modulation systems and methods
GB0415626D0 (en) * 2004-07-13 2004-08-18 1 Ltd Directional microphone
GB0415625D0 (en) * 2004-07-13 2004-08-18 1 Ltd Miniature surround-sound loudspeaker
GB2431314B (en) * 2004-08-10 2008-12-24 1 Ltd Non-planar transducer arrays
US7492233B2 (en) * 2005-04-29 2009-02-17 Honeywell International Inc. Precision modulated controller output
GB0514361D0 (en) * 2005-07-12 2005-08-17 1 Ltd Compact surround sound effects system
WO2007050079A1 (en) 2005-10-26 2007-05-03 Thomson Licensing A system and method for compensating for a satellite gateway failure
US7804972B2 (en) * 2006-05-12 2010-09-28 Cirrus Logic, Inc. Method and apparatus for calibrating a sound beam-forming system
US7606380B2 (en) * 2006-04-28 2009-10-20 Cirrus Logic, Inc. Method and system for sound beam-forming using internal device speakers in conjunction with external speakers
US7676049B2 (en) * 2006-05-12 2010-03-09 Cirrus Logic, Inc. Reconfigurable audio-video surround sound receiver (AVR) and method
US7606377B2 (en) * 2006-05-12 2009-10-20 Cirrus Logic, Inc. Method and system for surround sound beam-forming using vertically displaced drivers
CN102684700B (zh) 2006-05-21 2015-04-01 株式会社特瑞君思半导体 数字扬声器系统
JP5180192B2 (ja) * 2006-05-22 2013-04-10 オーディオ ピクセルズ エルティーディー． 圧力波発生装置及び方法
US8457338B2 (en) 2006-05-22 2013-06-04 Audio Pixels Ltd. Apparatus and methods for generating pressure waves
AU2007252848A1 (en) * 2006-05-22 2007-11-29 Audio Pixels Ltd. Volume and tone control in direct digital speakers
US7570037B2 (en) * 2006-11-17 2009-08-04 Virginia Tech Intellectual Properties, Inc. Hybrid control methods for digital pulse width modulator (DPWM)
KR101411183B1 (ko) * 2007-05-21 2014-06-23 오디오 픽셀즈 리미티드 원하는 지향성 패턴을 가지는 다이렉트 디지털 스피커 장치
DE102007029959A1 (de) * 2007-06-28 2009-01-02 Robert Bosch Gmbh Verfahren und Vorrichtung zur Erfassung einer Umgebung
KR101292206B1 (ko) * 2007-10-01 2013-08-01 삼성전자주식회사 어레이 스피커 시스템 및 그 구현 방법
WO2009066290A2 (en) 2007-11-21 2009-05-28 Audio Pixels Ltd. Digital speaker apparatus
JP5396588B2 (ja) 2008-06-16 2014-01-22 株式会社 Ｔｒｉｇｅｎｃｅ Ｓｅｍｉｃｏｎｄｕｃｔｏｒ デジタルスピーカー駆動装置，デジタルスピーカー装置，アクチュエータ，平面ディスプレイ装置及び携帯電子機器
DE102008038340B4 (de) * 2008-08-19 2010-04-22 Austriamicrosystems Ag Schaltungsanordnung zur Ansteuerung einer Lichtquelle und Verfahren zum Erzeugen eines Ansteuersignals für dieselbe
EP2326108B1 (de) * 2009-11-02 2015-06-03 Harman Becker Automotive Systems GmbH Phasenentzerrung für Audiosystem
WO2011070810A1 (ja) 2009-12-09 2011-06-16 株式会社 Ｔｒｉｇｅｎｃｅ Ｓｅｍｉｃｏｎｄｕｃｔｏｒ 選択装置
CN103096217B (zh) 2009-12-16 2016-09-28 株式会社特瑞君思半导体 音响系统
KR101830998B1 (ko) 2010-03-11 2018-02-21 오디오 픽셀즈 리미티드 가동 소자가 정전기력에 의해서만 구동되는 정전기 평행판 액츄에이터 및 이와 연계된 유용한 방법
CN102316400A (zh) * 2010-07-02 2012-01-11 英业达股份有限公司 喇叭与应用该喇叭的可携式电子装置
US8693708B2 (en) * 2010-08-24 2014-04-08 Star Headlight & Lantern Co., Inc. System for operating a device for producing an audible alarm
CN101986721B (zh) 2010-10-22 2014-07-09 苏州上声电子有限公司 全数字式扬声器装置
JP5871336B2 (ja) 2010-11-26 2016-03-01 オーディオ ピクセルズ エルティーディー．Ａｕｄｉｏ Ｐｉｘｅｌｓ Ｌｔｄ． アクチュエータアレイにおける個別のアドレス指定およびノイズ低減のための装置および方法
DE102011003168A1 (de) * 2011-01-26 2012-07-26 Robert Bosch Gmbh Lautsprechersystem
US20120244969A1 (en) 2011-03-25 2012-09-27 May Patents Ltd. System and Method for a Motion Sensing Device
TWI461884B (zh) * 2011-04-06 2014-11-21 Himax Imagimg Inc 用來產生輸出時脈訊號的時脈產生電路及相關方法
GB2491130B (en) * 2011-05-23 2013-07-10 Sontia Logic Ltd Reducing distortion
US8897465B2 (en) 2011-06-01 2014-11-25 Robert Bosch Gmbh Class D micro-speaker
US20130039431A1 (en) * 2011-08-12 2013-02-14 Electronics And Telecommunications Research Institute Power-scalable encoding/decoding apparatus and method
JP5838927B2 (ja) * 2011-10-14 2016-01-06 Tdk株式会社 積層セラミック電子部品
CN102404672B (zh) 2011-10-27 2013-12-18 苏州上声电子有限公司 数字化扬声器阵列系统的通道均衡与波束控制方法和装置
CN103152673B (zh) * 2011-12-07 2015-07-08 中国科学院声学研究所 基于四元码动态失配整形的数字扬声器驱动方法和装置
US9240776B2 (en) * 2012-01-26 2016-01-19 Rf Micro Devices, Inc. Analog-digital pulse width modulator (ADPWM)
CN103248981B (zh) * 2012-02-06 2016-06-01 王永明 一种扬声器
CN102684701B (zh) 2012-04-27 2014-07-09 苏州上声电子有限公司 基于编码转换的数字扬声器驱动方法和装置
EP2856769B1 (de) 2012-05-25 2018-07-04 Audio Pixels Ltd. System, verfahren und computerprogrammprodukt zur steuerung einer gruppe von aktuatorarrays zur erzeugung eines physikalischen effekts
DK2856770T3 (en) 2012-05-25 2018-10-22 Audio Pixels Ltd SYSTEM, PROCEDURE AND COMPUTER PROGRAM PRODUCT TO CONTROL A SET OF ACTUATOR ELEMENTS
US20160050492A1 (en) * 2013-02-26 2016-02-18 The University Of Akron Direct-drive digital audio amplifier for electrostatic loudspeakers
US8934654B2 (en) 2013-03-13 2015-01-13 Aliphcom Non-occluded personal audio and communication system
US10070211B2 (en) * 2013-06-28 2018-09-04 Kopin Corporation Digital voice processing method and system for headset computer
US9350336B2 (en) * 2014-02-05 2016-05-24 Texas Instruments Incorporated Timing compensation using the system clock
CN104022758B (zh) * 2014-05-29 2016-09-28 中国人民解放军国防科学技术大学 一种带清零置位端口的功耗均衡触发器
KR102197230B1 (ko) * 2014-10-06 2020-12-31 한국전자통신연구원 음향 특성을 예측하는 오디오 시스템 및 방법
KR102695498B1 (ko) 2015-04-15 2024-08-16 오디오 픽셀즈 리미티드 공간에서 객체의 위치를 검출하는 방법 및 시스템
KR102340202B1 (ko) 2015-06-25 2021-12-17 한국전자통신연구원 실내의 반사 특성을 추출하는 오디오 시스템 및 방법
US9621040B2 (en) * 2015-08-20 2017-04-11 Sanken Electric Co., Ltd. PWM signal generator and switching power supply device having same
US10030961B2 (en) 2015-11-27 2018-07-24 General Electric Company Gap measuring device
US10557472B2 (en) 2015-12-17 2020-02-11 Venturedyne, Ltd. Environmental sensor and method of operating the same
EP3390838B1 (de) * 2015-12-17 2021-07-14 Venturedyne, Ltd Umgebungssensor
US9857285B2 (en) 2015-12-17 2018-01-02 Venturedyne, Ltd. Environmental sensor and method of operating the same
US9983596B2 (en) 2015-12-17 2018-05-29 Venturedyne, Ltd. Environmental sensor and method of operating the same
US9813803B1 (en) * 2016-05-04 2017-11-07 Wu-Hsu Lin Electrical speaker assembly
US10103928B2 (en) * 2016-05-23 2018-10-16 National Instruments Corporation Nyquist and square root nyquist filters for pulse shaping in wireless communications
US10014869B1 (en) * 2017-03-08 2018-07-03 Qualcomm Incorporated Fractional clock generator with ramp control including fixed time interval and coarse/fine frequency change steps
WO2018164438A1 (en) * 2017-03-10 2018-09-13 Samsung Electronics Co., Ltd. Method and apparatus for in-room low-frequency sound power optimization
US20180315453A1 (en) * 2017-04-28 2018-11-01 Tymphany Worldwide Enterprises Limited Audio integrated circuit
DE102017221738A1 (de) * 2017-12-03 2019-06-06 Audi Ag Verfahren zum Einstellen einer Leistungselektronik
CN107948808A (zh) * 2018-01-12 2018-04-20 上海联影医疗科技有限公司 应用于磁共振系统的耳机和磁共振系统
CN110636407B (zh) * 2018-06-21 2024-06-07 刘云轩 一种全数字扬声器系统及其工作方法
US10951204B2 (en) * 2018-08-30 2021-03-16 Maxim Integrated Products, Inc. Digital pulse width modulation driver system
US10484784B1 (en) * 2018-10-19 2019-11-19 xMEMS Labs, Inc. Sound producing apparatus
US10681488B1 (en) 2019-03-03 2020-06-09 xMEMS Labs, Inc. Sound producing apparatus and sound producing system
US10623882B1 (en) * 2019-04-03 2020-04-14 xMEMS Labs, Inc. Sounding system and sounding method
US11522448B2 (en) 2019-05-29 2022-12-06 Alpha And Omega Semiconductor (Cayman) Limited Autonomous current sharing for power stages
EP3772635A1 (de) * 2019-08-07 2021-02-10 Sulzer Management AG Sensoranordnung für einen geschlossenen behälter und verfahren zur übertragung von daten durch die behälterwand
US10841136B1 (en) 2019-08-14 2020-11-17 National Instruments Corporation Asymmetric factorization of generalized raised cosine filters for improved selectivity
US10840895B1 (en) 2019-09-06 2020-11-17 International Business Machines Corporation Fine-grained programmable delay and pulse shaping circuit
CN111162741B (zh) * 2019-12-23 2023-07-25 上海船舶电子设备研究所(中国船舶重工集团公司第七二六研究所) 一种数字功率放大器及匹配滤波方法
CN111782049B (zh) * 2020-07-02 2023-12-01 瑞声科技(新加坡)有限公司 马达应用频率带宽的评估方法及设备、存储介质
CN112601155A (zh) * 2020-12-10 2021-04-02 南京汉得利智能科技有限公司 一种数字参量阵扬声器的方法和系统
CN112865731B (zh) * 2021-01-13 2023-03-24 上海艾为电子技术股份有限公司 D类音频放大器及其混合调制方法、电子设备
DE102021205545A1 (de) * 2021-05-31 2022-12-01 Kaetel Systems Gmbh Vorrichtung und Verfahren zum Erzeugen eines Ansteuersignals für einen Schallerzeuger oder zum Erzeugen eines erweiterten Mehrkanalaudiosignals unter Verwendung einer Ähnlichkeitsanalyse
CN114900780B (zh) * 2022-04-27 2025-09-23 日照职业技术学院 一种线下教育用便于携带的扩音装置

Family Cites Families (102)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966384C (de) 1949-05-29 1957-08-01 Siemens Ag Elektroakustische UEbertragungsanlage mit einer Lautsprecheranordnung in einem Wiedergaberaum
US3996561A (en) * 1974-04-23 1976-12-07 Honeywell Information Systems, Inc. Priority determination apparatus for serially coupled peripheral interfaces in a data processing system
US3992586A (en) 1975-11-13 1976-11-16 Jaffe Acoustics, Inc. Boardroom sound reinforcement system
US4042778A (en) 1976-04-01 1977-08-16 Clinton Henry H Collapsible speaker assembly
GB1603201A (en) 1977-03-11 1981-11-18 Ard Tech Ass Eng Sound reproduction systems
GB1571714A (en) 1977-04-13 1980-07-16 Kef Electronics Ltd Loudspeakers
US4190739A (en) 1977-04-27 1980-02-26 Marvin Torffield High-fidelity stereo sound system
EP0025118A1 (de) 1979-08-18 1981-03-18 Riedlinger, Rainer, Dr.-Ing. Anordnung zur akustischen Wiedergabe von Signalen, die mittels eines rechten und eines linken Stereo-Kanals darstellbar sind
US4330691A (en) * 1980-01-31 1982-05-18 The Futures Group, Inc. Integral ceiling tile-loudspeaker system
US4305296B2 (en) 1980-02-08 1989-05-09 Ultrasonic imaging method and apparatus with electronic beam focusing and scanning
US4769848A (en) 1980-05-05 1988-09-06 Howard Krausse Electroacoustic network
JPS5768991A (en) 1980-10-16 1982-04-27 Pioneer Electronic Corp Speaker system
DE3142462A1 (de) 1980-10-28 1982-05-27 Hans-Peter 7000 Stuttgart Pfeiffer Lautsprecheranordnung
US4388493A (en) 1980-11-28 1983-06-14 Maisel Douglas A In-band signaling system for FM transmission systems
US4515997A (en) * 1982-09-23 1985-05-07 Stinger Jr Walter E Direct digital loudspeaker
JPS59179743A (ja) 1983-03-31 1984-10-12 Showa Electric Wire & Cable Co Ltd 耐屈曲性に優れた導電用銅合金
JPS59186498A (ja) 1983-04-07 1984-10-23 Nippon Columbia Co Ltd パラメトリツクアレ−マイクロホン
JPS60249946A (ja) 1984-05-25 1985-12-10 株式会社東芝 超音波組織診断装置
JPS61253996A (ja) 1985-05-02 1986-11-11 Matsushita Electric Ind Co Ltd パラメトリツクスピ−カ
JPH0728463B2 (ja) 1984-08-28 1995-03-29 松下電器産業株式会社 パラメトリツクスピ−カ
JPH0239997B2 (ja) 1984-12-26 1990-09-07 Takao Shishido Nijikyokusensoseigu
DE3533264A1 (de) 1985-09-18 1987-03-26 Meier F Victoria Pinsel Vorrichtung zur zahnpflege
JPH0815288B2 (ja) 1985-09-30 1996-02-14 株式会社東芝 音声伝送方式
JPS62103315A (ja) 1985-10-30 1987-05-13 Yoshikawa Kogyo Co Ltd 熱処理炉用ハ−スロ−ル
JPH0679195B2 (ja) 1985-12-04 1994-10-05 大日本印刷株式会社 絵柄付きホログラム転写シート
JPS639300A (ja) 1986-06-27 1988-01-14 Matsushita Electric Ind Co Ltd スピ−カシステム
JPS6314588A (ja) 1986-07-07 1988-01-21 Toshiba Corp 電子会議システム
SU1678327A1 (ru) 1987-03-12 1991-09-23 Каунасский Медицинский Институт Ультразвуковой пьезопреобразователь
JP2713402B2 (ja) 1987-03-23 1998-02-16 松下電器産業株式会社 音場補正装置
US4773096A (en) * 1987-07-20 1988-09-20 Kirn Larry J Digital switching power amplifier
GB2209229B (en) 1987-08-28 1991-12-04 Tasco Ltd Remote control system
KR910007182B1 (ko) 1987-12-21 1991-09-19 마쯔시다덴기산교 가부시기가이샤 스크리인장치
FR2628335B1 (fr) 1988-03-09 1991-02-15 Univ Alsace Installation pour assurer la regie du son, de la lumiere et/ou d'autres effets physiques d'un spectacle
NL8800858A (nl) 1988-04-05 1989-11-01 Philips Nv Rekenmachinesysteem voorzien van een hoofdbus en een tussen processor en geheugen direkt verbonden extra kommunikatielijn.
JPH01297716A (ja) 1988-05-26 1989-11-30 Toyobo Co Ltd 光学式座標入力素子
US5016258A (en) * 1988-06-10 1991-05-14 Matsushita Electric Industrial Co., Ltd. Digital modulator and demodulator
JPH0213097A (ja) 1988-06-29 1990-01-17 Toa Electric Co Ltd スピーカ・システム用駆動制御装置
FI81471C (fi) 1988-11-08 1990-10-10 Timo Tarkkonen Hoegtalare givande ett tredimensionellt stereoljudintryck.
US4984273A (en) 1988-11-21 1991-01-08 Bose Corporation Enhancing bass
US4961432A (en) 1989-01-10 1990-10-09 Cancer Diagnostics, Inc. Modular fluid sample preparation assembly
US5051799A (en) * 1989-02-17 1991-09-24 Paul Jon D Digital output transducer
JP2610991B2 (ja) 1989-03-13 1997-05-14 ティーオーエー株式会社 指向性制御型スピ−カシステム
JPH034842A (ja) 1989-05-31 1991-01-10 Aloka Co Ltd 超音波ドプラ診断装置
US4980871A (en) 1989-08-22 1990-12-25 Visionary Products, Inc. Ultrasonic tracking system
US4972381A (en) 1989-09-29 1990-11-20 Westinghouse Electric Corp. Sonar testing apparatus
AT394124B (de) 1989-10-23 1992-02-10 Goerike Rudolf Fernsehempfangsgeraet mit stereotonwiedergabe
JP2665007B2 (ja) 1989-11-16 1997-10-22 三菱重工業株式会社 超指向性スピーカーシステム
JP3067140B2 (ja) 1989-11-17 2000-07-17 日本放送協会 立体音響再生方法
JPH0736866B2 (ja) 1989-11-28 1995-04-26 ヤマハ株式会社 ホール音場支援装置
JPH03252315A (ja) 1990-02-27 1991-11-11 Osaka Titanium Co Ltd 高純度酸化チタンの製造方法
GB2243040A (en) 1990-04-09 1991-10-16 William Stuart Hickie Taylor Radio / sonic transponder location system
JPH048975A (ja) 1990-04-24 1992-01-13 Tokimec Inc コントローラ搭載型電磁制御弁
JP2848918B2 (ja) 1990-05-14 1999-01-20 住友ベークライト株式会社 両面フレキシブルプリント回路基板用樹脂。
JPH04214144A (ja) 1990-07-10 1992-08-05 Mitsui Constr Co Ltd 排気ダクト用ダンパ
JPH04127700A (ja) 1990-09-18 1992-04-28 Matsushita Electric Ind Co Ltd 音像制御装置
US5287531A (en) * 1990-10-31 1994-02-15 Compaq Computer Corp. Daisy-chained serial shift register for determining configuration of removable circuit boards in a computer system
EP0492015A1 (de) 1990-12-28 1992-07-01 Uraco Impex Asia Pte Ltd. Navigationsverfahren und -vorrichtung für ein automatisch geführtes Fahrzeug
JP3052384B2 (ja) 1991-01-21 2000-06-12 三菱電機株式会社 マルチアンプ方式スピーカシステム
JPH051321A (ja) 1991-06-24 1993-01-08 Daido Steel Co Ltd 耐遅れ破壊性と疲労特性のすぐれた高強度ボルトの製造方法
JPH0510123A (ja) 1991-06-28 1993-01-19 Kubota Corp エンジンの強制空冷装置
JPH0541897A (ja) 1991-08-07 1993-02-19 Pioneer Electron Corp スピーカ装置およびその指向性制御方法
JP3448292B2 (ja) 1991-08-15 2003-09-22 ヘイン−ワーナー・コーポレイシヨン 車両形状決定システム
JP3369200B2 (ja) 1991-09-30 2003-01-20 日本放送協会 多チャンネルステレオ再生方式
US5166905A (en) 1991-10-21 1992-11-24 Texaco Inc. Means and method for dynamically locating positions on a marine seismic streamer cable
JP3211321B2 (ja) 1992-01-20 2001-09-25 松下電器産業株式会社 指向性スピーカ装置
JP2827652B2 (ja) 1992-01-22 1998-11-25 松下電器産業株式会社 音響再生システム
JPH05301465A (ja) 1992-02-26 1993-11-16 Ricoh Co Ltd 昇華型熱転写用受像体
JPH05344584A (ja) 1992-06-12 1993-12-24 Matsushita Electric Ind Co Ltd 音響装置
US5313300A (en) * 1992-08-10 1994-05-17 Commodore Electronics Limited Binary to unary decoder for a video digital to analog converter
JPH0662488A (ja) 1992-08-11 1994-03-04 Pioneer Electron Corp スピーカ装置
US5550726A (en) 1992-10-08 1996-08-27 Ushio U-Tech Inc. Automatic control system for lighting projector
JPH06178379A (ja) 1992-12-10 1994-06-24 Sony Corp 映像視聴システム
FR2699205B1 (fr) 1992-12-11 1995-03-10 Decaux Jean Claude Perfectionnements aux procédés et dispositifs pour protéger des bruits extérieurs un volume donné, de préférence disposé à l'intérieur d'un local.
US5313172A (en) * 1992-12-11 1994-05-17 Rockwell International Corporation Digitally switched gain amplifier for digitally controlled automatic gain control amplifier applications
JP3205625B2 (ja) 1993-01-07 2001-09-04 パイオニア株式会社 スピーカ装置
JPH06225379A (ja) 1993-01-25 1994-08-12 Matsushita Electric Ind Co Ltd 指向性スピーカ装置
JPH077788A (ja) * 1993-03-19 1995-01-10 Ford Motor Co 音響再生システム及び音響再生方法
AU6383494A (en) 1993-04-03 1994-10-24 Cat Systems Limited Localising system
JPH06318087A (ja) 1993-05-07 1994-11-15 Mitsui Constr Co Ltd 舞台用音響制御方法と装置
JP3293240B2 (ja) 1993-05-18 2002-06-17 ヤマハ株式会社 ディジタル信号処理装置
JP3004842B2 (ja) 1993-08-06 2000-01-31 新日本製鐵株式会社 バケットチェンエレベータ掘削装置
JP2702876B2 (ja) 1993-09-08 1998-01-26 株式会社石川製作所 音響源検出装置
DE4428500C2 (de) 1993-09-23 2003-04-24 Siemens Ag Ultraschallwandlerarray mit einer reduzierten Anzahl von Wandlerelementen
US5751821A (en) 1993-10-28 1998-05-12 Mcintosh Laboratory, Inc. Speaker system with reconfigurable, high-frequency dispersion pattern
JPH07154893A (ja) 1993-12-01 1995-06-16 Nippon Hoso Kyokai <Nhk> スピーカシステム
DE4343807A1 (de) * 1993-12-22 1995-06-29 Guenther Nubert Elektronic Gmb Verfahren und Vorrichtung zum Unwandeln eines elektrischen in ein akustisches Signal
JPH07203581A (ja) 1993-12-29 1995-08-04 Matsushita Electric Ind Co Ltd 指向性スピーカシステム
GB2290380A (en) 1994-05-13 1995-12-20 Gd Eng Ass Shot tracking device
US5517200A (en) 1994-06-24 1996-05-14 The United States Of America As Represented By The Secretary Of The Air Force Method for detecting and assessing severity of coordinated failures in phased array antennas
NL9401860A (nl) 1994-11-08 1996-06-03 Duran Bv Luidsprekersysteem met bestuurde richtinggevoeligheid.
GB9506725D0 (en) * 1995-03-31 1995-05-24 Hooley Anthony Improvements in or relating to loudspeakers
US5763785A (en) 1995-06-29 1998-06-09 Massachusetts Institute Of Technology Integrated beam forming and focusing processing circuit for use in an ultrasound imaging system
GB2320351B (en) 1995-09-05 1999-09-29 Ryford Ltd Flow control means
US5832097A (en) * 1995-09-19 1998-11-03 Gennum Corporation Multi-channel synchronous companding system
JP3252315B2 (ja) 1995-12-14 2002-02-04 油研工業株式会社 荷役搬送装置
US6205224B1 (en) 1996-05-17 2001-03-20 The Boeing Company Circularly symmetric, zero redundancy, planar array having broad frequency range applications
JP3197864B2 (ja) 1998-03-06 2001-08-13 株式会社日本製鋼所 射出成形機用加熱筒の温度制御方法および温度制御装置
DE19920307A1 (de) * 1999-05-03 2000-11-16 St Microelectronics Gmbh Elektrische Schaltung zum Steuern einer Last
US7260235B1 (en) 2000-10-16 2007-08-21 Bose Corporation Line electroacoustical transducing
KR100922910B1 (ko) 2001-03-27 2009-10-22 캠브리지 메카트로닉스 리미티드 사운드 필드를 생성하는 방법 및 장치
GB0203895D0 (en) 2002-02-19 2002-04-03 1 Ltd Compact surround-sound system
GB0304126D0 (en) 2003-02-24 2003-03-26 1 Ltd Sound beam loudspeaker system

Also Published As

Publication number Publication date
ATE306801T1 (de) 2005-10-15
DE69618183D1 (de) 2002-01-31
US6967541B2 (en) 2005-11-22
EP1122973A2 (de) 2001-08-08
JPH11502981A (ja) 1999-03-09
DE69618183T2 (de) 2002-08-14
GB9506725D0 (en) 1995-05-24
CN1147207C (zh) 2004-04-21
EP1122973B1 (de) 2005-10-12
CN1575037A (zh) 2005-02-02
US20010043652A1 (en) 2001-11-22
EP0818122A1 (de) 1998-01-14
EP1122973A3 (de) 2002-09-04
DE69635286D1 (de) 2006-02-23
US20060049889A1 (en) 2006-03-09
DK0818122T3 (da) 2002-03-18
EP0818122B1 (de) 2001-12-19
US7215788B2 (en) 2007-05-08
WO1996031086A1 (en) 1996-10-03
CN1180470A (zh) 1998-04-29
JP3492698B2 (ja) 2004-02-03
AU5117096A (en) 1996-10-16
US6373955B1 (en) 2002-04-16

Similar Documents

Publication Publication Date Title
DE69618183D1 (de) Massnahmen zur verbesserung von lautsprechern
US6181266B1 (en) D/A conversion method and a D/A converter using pulse width modulation
EP0729226A3 (de) Differenzverstärker
JPS5757025A (en) Waveform converting circuit
EP1244219A3 (de) Verfahren und Gerät zur Digital-Analog-Wandlung mit effektiver Pulsbreitenmodulation
GB2364456A (en) Linear pulse-width modulation system
KR100373466B1 (ko) D/a변환기
EP0388130A3 (de) Analog/Digitalwandler für ein differentielles Eingangssignal
EP0800277A3 (de) Analog-Digital-Wandler
GB1269906A (en) Signal converting apparatus
GB1576225A (en) Digital-to-analogue converters
CA1288138C (en) Clock-controlled pulse width modulator
DE3689556D1 (de) Gerät und Verfahren zur Umwandlung einer Spannung in einen digitalen Zählwert.
JPS55140327A (en) Pulse width modulator
JPS56132024A (en) Delta modulation system
RU2006908C1 (ru) Устройство для ввода информации
SU1510087A1 (ru) Преобразователь ток-частота с импульсной обратной св зью
SU1285573A1 (ru) Устройство дл формировани и преобразовани сигнала дифференциально-трансформаторного преобразовател
SU1374253A2 (ru) Устройство дл умножени напр жений
SU1674171A1 (ru) Функциональный преобразователь
SU1571622A1 (ru) Широтно-импульсное множительное устройство
SU1689973A1 (ru) Функциональный преобразователь
JPS6324577B2 (de)
SU1188761A1 (ru) Квадратор
SU1305861A1 (ru) Цифроаналоговый преобразователь

Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee