ATE544301T1 - Stark gerichtetes lautsprechersystem und signalverarbeitungsverfahren dafür - Google Patents

Stark gerichtetes lautsprechersystem und signalverarbeitungsverfahren dafür

Info

Publication number
ATE544301T1
ATE544301T1 AT06123564T AT06123564T ATE544301T1 AT E544301 T1 ATE544301 T1 AT E544301T1 AT 06123564 T AT06123564 T AT 06123564T AT 06123564 T AT06123564 T AT 06123564T AT E544301 T1 ATE544301 T1 AT E544301T1
Authority
AT
Austria
Prior art keywords
signal
envelop
generate
adaptive filter
ultrasonic
Prior art date
Application number
AT06123564T
Other languages
English (en)
Inventor
Kyungmin Na
Original Assignee
Sonicast Inc
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 Sonicast Inc filed Critical Sonicast Inc
Application granted granted Critical
Publication of ATE544301T1 publication Critical patent/ATE544301T1/de

Links

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
    • 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
    • H04R1/323—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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H04R3/04—Circuits for transducers for correcting frequency response
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Circuit For Audible Band Transducer (AREA)
AT06123564T 2005-11-21 2006-11-07 Stark gerichtetes lautsprechersystem und signalverarbeitungsverfahren dafür ATE544301T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020050111146A KR100622078B1 (ko) 2005-11-21 2005-11-21 초지향성 스피커 시스템 및 신호처리 방법

Publications (1)

Publication Number Publication Date
ATE544301T1 true ATE544301T1 (de) 2012-02-15

Family

ID=37624591

Family Applications (1)

Application Number Title Priority Date Filing Date
AT06123564T ATE544301T1 (de) 2005-11-21 2006-11-07 Stark gerichtetes lautsprechersystem und signalverarbeitungsverfahren dafür

Country Status (6)

Country Link
US (1) US7929715B2 (de)
EP (1) EP1791390B1 (de)
JP (1) JP2007143157A (de)
KR (1) KR100622078B1 (de)
CN (1) CN1972525B (de)
AT (1) ATE544301T1 (de)

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KR20120054082A (ko) * 2009-08-25 2012-05-29 난양 테크놀러지컬 유니버시티 지향성 음향 시스템
EP2391014B1 (de) 2009-12-09 2017-12-27 Trigence Semiconductor, Inc. Auswahlvorrichtung
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WO2013118636A1 (ja) * 2012-02-08 2013-08-15 国立大学法人九州工業大学 消音装置
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CN105979437A (zh) * 2016-07-13 2016-09-28 微鲸科技有限公司 音频播放装置以及音频系统
KR101882140B1 (ko) * 2017-04-25 2018-07-26 주식회사 제이디솔루션 초지향성 및 무지향성 동시 신호출력이 가능한 복합스피커시스템
WO2018199347A1 (ko) * 2017-04-25 2018-11-01 주식회사 제이디솔루션 초지향성 및 무지향성 동시 신호출력이 가능한 복합스피커시스템
KR101857390B1 (ko) * 2017-06-26 2018-05-11 김옥경 컬럼 스피커의 지향성패턴 조절장치
KR101859951B1 (ko) * 2017-07-03 2018-05-21 김옥경 스피커의 수직지향성 조절장치
US10672416B2 (en) * 2017-10-20 2020-06-02 Board Of Trustees Of The University Of Illinois Causing microphones to detect inaudible sounds and defense against inaudible attacks
KR102013068B1 (ko) 2018-05-04 2019-08-21 주식회사 제이디솔루션 안정성이 증가된 초지향성 스피커 회로
KR102001778B1 (ko) 2018-05-23 2019-07-18 주식회사 제이디솔루션 개선된 초음파 초지향성 스피커 시스템 및 이를 위한 주파수 변조 처리 방법
KR101981576B1 (ko) 2018-10-29 2019-05-23 캐치플로우(주) 초지향성 초음파 스피커 장치의 다이나믹레인지 제어 방법 및 이를 구비한 초지향성 초음파 스피커 장치
KR101981575B1 (ko) * 2018-10-29 2019-05-23 캐치플로우(주) 초지향성 초음파 스피커 장치의 음질개선 방법 및 이를 구비한 초음파 스피커 장치
KR102077472B1 (ko) 2018-12-28 2020-02-14 캐치플로우(주) 초지향성 초음파 스피커의 개선된 오디오 신호처리 방법 및 이를 구비한 초음파 스피커 장치
KR102022962B1 (ko) 2019-05-08 2019-09-19 캐치플로우(주) 하이브리드 초지향성 스피커
CN110267161A (zh) * 2019-06-17 2019-09-20 重庆清文科技有限公司 一种定向声音失真矫正方法和装置
CN110784799B (zh) * 2019-10-29 2021-01-22 中国电子科技集团公司第四十一研究所 一种声音定向传输方法及系统
KR102235797B1 (ko) 2019-12-04 2021-04-02 주식회사 제이디솔루션 초지향성 스피커를 이용한 사운드 태그 시스템
KR102236404B1 (ko) 2019-12-31 2021-04-05 주식회사 제이디솔루션 초지향성 스피커를 이용한 대중교통수단 운임결제용 사운드 태그 시스템
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CN113395637B (zh) * 2021-06-10 2022-09-09 上海傅硅电子科技有限公司 一种音频功放芯片输出电压的控制方法
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Also Published As

Publication number Publication date
EP1791390A2 (de) 2007-05-30
EP1791390A3 (de) 2009-09-23
CN1972525B (zh) 2011-12-07
JP2007143157A (ja) 2007-06-07
KR100622078B1 (ko) 2006-09-13
EP1791390B1 (de) 2012-02-01
US20070121968A1 (en) 2007-05-31
CN1972525A (zh) 2007-05-30
US7929715B2 (en) 2011-04-19

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