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
Links
Classifications
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- 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
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- 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)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Mathematical Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
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 (US06566495-20030520-M00011.png) | 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 (US06566495-20030520-M00011.png) |
| WO (1) | WO1993022832A1 (US06566495-20030520-M00011.png) |
Family Cites Families (4)
| 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 |
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1992
- 1992-05-05 FR FR9205499A patent/FR2690994A1/fr active Granted
-
1993
- 1993-05-04 WO PCT/FR1993/000427 patent/WO1993022832A1/fr active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO1993022832A1 (fr) | 1993-11-11 |
| FR2690994A1 (fr) | 1993-11-12 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |