IT8421027A1 - "metodo e apparato di misura di impedenze acustiche" - Google Patents

"metodo e apparato di misura di impedenze acustiche"

Info

Publication number
IT8421027A1
IT8421027A1 IT1984A21027A IT2102784A IT8421027A1 IT 8421027 A1 IT8421027 A1 IT 8421027A1 IT 1984A21027 A IT1984A21027 A IT 1984A21027A IT 2102784 A IT2102784 A IT 2102784A IT 8421027 A1 IT8421027 A1 IT 8421027A1
Authority
IT
Italy
Prior art keywords
acoustic impedances
measuring acoustic
measuring
impedances
acoustic
Prior art date
Application number
IT1984A21027A
Other languages
English (en)
Other versions
IT8421027A0 (it
IT1178477B (it
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of IT8421027A0 publication Critical patent/IT8421027A0/it
Publication of IT8421027A1 publication Critical patent/IT8421027A1/it
Application granted granted Critical
Publication of IT1178477B publication Critical patent/IT1178477B/it

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H15/00—Measuring mechanical or acoustic impedance

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
IT21027/84A 1983-05-31 1984-05-21 Metodo e apparato di misura di impedenze acustiche IT1178477B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/499,641 US4537630A (en) 1983-05-31 1983-05-31 Acoustic impedance measurement

Publications (3)

Publication Number Publication Date
IT8421027A0 IT8421027A0 (it) 1984-05-21
IT8421027A1 true IT8421027A1 (it) 1985-11-21
IT1178477B IT1178477B (it) 1987-09-09

Family

ID=23986087

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21027/84A IT1178477B (it) 1983-05-31 1984-05-21 Metodo e apparato di misura di impedenze acustiche

Country Status (6)

Country Link
US (1) US4537630A (it)
JP (1) JPS6040923A (it)
DE (1) DE3419515A1 (it)
FR (1) FR2547055B1 (it)
GB (1) GB2140919B (it)
IT (1) IT1178477B (it)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4732039A (en) * 1985-12-26 1988-03-22 General Electric Company Acoustic impedance measurement
US4768379A (en) * 1986-07-25 1988-09-06 Grumman Aerospace Corporation Method and apparatus for determining flow resistance of fully assembled acoustic liners
FR2669730B1 (fr) * 1990-11-23 1993-01-22 Thomson Csf Methode intensimetrique pour mesurer des caracteristiques acoustiques d'un baffle.
US5377546A (en) * 1992-01-29 1995-01-03 Grumman Aerospace Corporation Multi-degree linear liner impedance testing device
DE4329246C2 (de) * 1993-08-31 2002-10-24 Eckard Mommertz Verfahren zur Bestimmung der frequenzabhängigen Reflexionseigenschaften von Wandmaterialien
AUPM919794A0 (en) * 1994-11-01 1994-11-24 Unisearch Limited System for real time measurement of impedance spectra or transfer functions of acoustic and mechanical systems
FR2758186B1 (fr) * 1997-01-09 1999-02-05 Snecma Procede non destructif pour estimer le vieillissement d'une piece en materiau composite
US6119521A (en) * 1998-04-20 2000-09-19 Northrop Grumman Corporation Apparatus and method for measuring the acoustic properties of acoustic absorbers
US6134968A (en) * 1999-07-19 2000-10-24 The Boeing Company Portable acoustic impedance measurement system
US6487909B2 (en) * 2001-02-05 2002-12-03 Siemens Westinghouse Power Corporation Acoustic waveguide sensing the condition of components within gas turbines
JP5721483B2 (ja) * 2011-03-16 2015-05-20 フォスター電機株式会社 音響特性測定装置
JP5642000B2 (ja) * 2011-03-25 2014-12-17 フォスター電機株式会社 音響特性測定装置
CN102651843B (zh) * 2012-02-23 2014-07-23 北京航天计量测试技术研究所 宽频带低失真等幅值等相位校准用驻波管耦合腔
GB2519142B (en) * 2013-10-11 2016-09-28 Univ Manchester Signal processing system and method
US20150369688A1 (en) * 2014-06-19 2015-12-24 Wistron Corporation Microphone seal detector
CN104034808A (zh) * 2014-07-04 2014-09-10 宁夏大学 多孔材料变梯度高温声学性能测试装置
CN104407056B (zh) * 2014-11-28 2017-11-07 歌尔股份有限公司 吸声材料阻抗特性及扩容性能测试装置及测试方法
WO2016087719A1 (fr) 2014-12-04 2016-06-09 Commissariat A L'energie Atomique Et Aux Energies Alternatives Procédé et système de caractérisation de propriétés mécaniques et thermiques
EP3288294B1 (en) * 2016-08-26 2019-07-17 Interacoustics A/S In-situ compensation of acoustic measurements
JP6346390B1 (ja) * 2018-02-16 2018-06-20 ニチアス株式会社 垂直入射音響特性測定装置及び垂直入射音響特性測定方法
JP6326183B1 (ja) * 2018-02-20 2018-05-16 ニチアス株式会社 垂直入射音響特性測定装置及び垂直入射音響特性測定方法
JP6326184B1 (ja) * 2018-02-20 2018-05-16 ニチアス株式会社 垂直入射音響特性測定装置及び垂直入射音響特性測定方法
CN111487324A (zh) * 2020-04-28 2020-08-04 国网湖北省电力有限公司电力科学研究院 一种声学阻抗管

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2394461A (en) * 1943-10-06 1946-02-05 Bell Telephone Labor Inc Means for and method of measuring the impedance and reflection coefficients of surfaces
US3346067A (en) * 1966-03-16 1967-10-10 Bell Telephone Labor Inc System for determining acoustic reflection coefficients
US4397187A (en) * 1981-08-17 1983-08-09 Ford Motor Company Chamber for tesing acoustical transmission loss characteristics of sheet materials
US4445378A (en) * 1982-11-24 1984-05-01 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Acoustic ground impedance meter

Also Published As

Publication number Publication date
US4537630A (en) 1985-08-27
IT8421027A0 (it) 1984-05-21
GB2140919B (en) 1987-03-11
FR2547055A1 (fr) 1984-12-07
GB8411734D0 (en) 1984-06-13
JPS6040923A (ja) 1985-03-04
GB2140919A (en) 1984-12-05
JPH051890B2 (it) 1993-01-11
DE3419515A1 (de) 1984-12-06
FR2547055B1 (fr) 1988-01-22
IT1178477B (it) 1987-09-09

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