JPWO2020240724A1 - - Google Patents

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Publication number
JPWO2020240724A1
JPWO2020240724A1 JP2021521645A JP2021521645A JPWO2020240724A1 JP WO2020240724 A1 JPWO2020240724 A1 JP WO2020240724A1 JP 2021521645 A JP2021521645 A JP 2021521645A JP 2021521645 A JP2021521645 A JP 2021521645A JP WO2020240724 A1 JPWO2020240724 A1 JP WO2020240724A1
Authority
JP
Japan
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
Application number
JP2021521645A
Other languages
Japanese (ja)
Other versions
JPWO2020240724A5 (https=
JP7540821B2 (ja
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
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Publication of JPWO2020240724A1 publication Critical patent/JPWO2020240724A1/ja
Publication of JPWO2020240724A5 publication Critical patent/JPWO2020240724A5/ja
Application granted granted Critical
Publication of JP7540821B2 publication Critical patent/JP7540821B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H04R27/00—Public address systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/008—Transducers other than those covered by groups H04R9/00 - H04R21/00 using optical signals for detecting or generating sound
    • 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
    • H04R3/005—Circuits for transducers for combining the signals of two or more microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/568—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
JP2021521645A 2019-05-29 2019-05-29 光ファイバセンシングシステム、光ファイバセンシング機器及び音出力方法 Active JP7540821B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/021210 WO2020240724A1 (ja) 2019-05-29 2019-05-29 光ファイバセンシングシステム、光ファイバセンシング機器及び音出力方法

Publications (3)

Publication Number Publication Date
JPWO2020240724A1 true JPWO2020240724A1 (https=) 2020-12-03
JPWO2020240724A5 JPWO2020240724A5 (https=) 2022-02-14
JP7540821B2 JP7540821B2 (ja) 2024-08-27

Family

ID=73553571

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2021521645A Active JP7540821B2 (ja) 2019-05-29 2019-05-29 光ファイバセンシングシステム、光ファイバセンシング機器及び音出力方法

Country Status (3)

Country Link
US (1) US20220225033A1 (https=)
JP (1) JP7540821B2 (https=)
WO (1) WO2020240724A1 (https=)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114008416A (zh) * 2019-04-22 2022-02-01 阿卜杜拉国王科技大学 使用光纤检测红棕象甲的信号处理算法
JP7380891B2 (ja) * 2020-08-13 2023-11-15 日本電気株式会社 未確認音抽出装置および未確認音抽出方法
JP7662045B2 (ja) * 2021-10-25 2025-04-15 日本電気株式会社 監視システム、監視方法
WO2023243059A1 (ja) * 2022-06-16 2023-12-21 日本電信電話株式会社 情報提示装置、情報提示方法及び情報提示プログラム
WO2024166295A1 (ja) * 2023-02-09 2024-08-15 日本電信電話株式会社 設備位置解析装置及び設備位置解析方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010506496A (ja) * 2006-10-05 2010-02-25 デラウェア ステイト ユニバーシティ ファウンデーション，インコーポレイティド 光ファイバ音響検出器
US20150177358A1 (en) * 2010-02-18 2015-06-25 US Seismic Systems, Inc. Fiber optic personnel safety systems and methods of using the same
JP2016134670A (ja) * 2015-01-16 2016-07-25 株式会社レーベン販売 光マイクロフォン、および補聴器
WO2018045433A1 (en) * 2016-09-08 2018-03-15 Mark Andrew Englund Method and system for distributed acoustic sensing

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1713301A1 (en) * 2005-04-14 2006-10-18 BRITISH TELECOMMUNICATIONS public limited company Method and apparatus for communicating sound over an optical link
JP4754360B2 (ja) 2006-01-16 2011-08-24 学校法人東海大学 光マイクロホン
JP5948035B2 (ja) * 2011-10-05 2016-07-06 ニューブレクス株式会社 分布型光ファイバ音波検出装置
CA2990704C (en) * 2015-06-25 2023-07-04 Hifi Engineering Inc. Fiber optic sensor shaped for a particular frequency response and method of manufacturing same
GB2570144A (en) * 2018-01-12 2019-07-17 Ap Sensing Gmbh High rate fibre optical distributed acoustic sensing
US12019200B2 (en) * 2019-03-12 2024-06-25 Saudi Arabian Oil Company Downhole monitoring using few-mode optical fiber based distributed acoustic sensing
CN114008416A (zh) * 2019-04-22 2022-02-01 阿卜杜拉国王科技大学 使用光纤检测红棕象甲的信号处理算法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010506496A (ja) * 2006-10-05 2010-02-25 デラウェア ステイト ユニバーシティ ファウンデーション，インコーポレイティド 光ファイバ音響検出器
US20150177358A1 (en) * 2010-02-18 2015-06-25 US Seismic Systems, Inc. Fiber optic personnel safety systems and methods of using the same
JP2016134670A (ja) * 2015-01-16 2016-07-25 株式会社レーベン販売 光マイクロフォン、および補聴器
WO2018045433A1 (en) * 2016-09-08 2018-03-15 Mark Andrew Englund Method and system for distributed acoustic sensing

Also Published As

Publication number Publication date
US20220225033A1 (en) 2022-07-14
JP7540821B2 (ja) 2024-08-27
WO2020240724A1 (ja) 2020-12-03

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