FR2690994B1 - - Google Patents

Info

Publication number
FR2690994B1
FR2690994B1 FR9205499A FR9205499A FR2690994B1 FR 2690994 B1 FR2690994 B1 FR 2690994B1 FR 9205499 A FR9205499 A FR 9205499A FR 9205499 A FR9205499 A FR 9205499A FR 2690994 B1 FR2690994 B1 FR 2690994B1
Authority
FR
France
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.)
Expired - Fee Related
Application number
FR9205499A
Other languages
French (fr)
Other versions
FR2690994A1 (fr
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 filed Critical
Priority to FR9205499A priority Critical patent/FR2690994A1/fr
Priority to PCT/FR1993/000427 priority patent/WO1993022832A1/fr
Publication of FR2690994A1 publication Critical patent/FR2690994A1/fr
Application granted granted Critical
Publication of FR2690994B1 publication Critical patent/FR2690994B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16—Spectrum analysis; Fourier analysis
    • G01R23/17—Spectrum analysis; Fourier analysis with optical or acoustical auxiliary devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/42—Detecting the response signal, e.g. electronic circuits specially adapted therefor by frequency filtering or by tuning to resonant frequency
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/46—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by spectral analysis, e.g. Fourier analysis or wavelet analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/042—Wave modes
    • G01N2291/0426—Bulk waves, e.g. quartz crystal microbalance, torsional waves

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
FR9205499A 1992-05-05 1992-05-05 Analyseur de spectre à ondes acoustiques de volume. Granted FR2690994A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR9205499A FR2690994A1 (fr) 1992-05-05 1992-05-05 Analyseur de spectre à ondes acoustiques de volume.
PCT/FR1993/000427 WO1993022832A1 (fr) 1992-05-05 1993-05-04 Analyseur de spectre a ondes acoutiques de volume

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9205499A FR2690994A1 (fr) 1992-05-05 1992-05-05 Analyseur de spectre à ondes acoustiques de volume.

Publications (2)

Publication Number Publication Date
FR2690994A1 FR2690994A1 (fr) 1993-11-12
FR2690994B1 true FR2690994B1 (enrdf_load_stackoverflow) 1997-02-28

Family

ID=9429525

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9205499A Granted FR2690994A1 (fr) 1992-05-05 1992-05-05 Analyseur de spectre à ondes acoustiques de volume.

Country Status (2)

Country Link
FR (1) FR2690994A1 (enrdf_load_stackoverflow)
WO (1) WO1993022832A1 (enrdf_load_stackoverflow)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB988102A (en) * 1962-08-03 1965-04-07 Marconi Co Ltd Improvements in or relating to wave-energy delay cells
US4292608A (en) * 1979-07-26 1981-09-29 Westinghouse Electric Corp. Electroacoustic delay line apparatus
US4259649A (en) * 1979-07-26 1981-03-31 Westinghouse Electric Corp. Electroacoustic delay line apparatus
US4827229A (en) * 1987-06-30 1989-05-02 Litton Systems, Inc. Broad band bulk acoustic wave spectrum analyzer/channelizer

Also Published As

Publication number Publication date
FR2690994A1 (fr) 1993-11-12
WO1993022832A1 (fr) 1993-11-11

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Legal Events

Date Code Title Description
ST Notification of lapse