FI94287C - Häiriönvaimennusmenetelmä ja anturikonstruktio signaalin mittaamiseksi kiinteän aineen pinnalta - Google Patents
Häiriönvaimennusmenetelmä ja anturikonstruktio signaalin mittaamiseksi kiinteän aineen pinnalta Download PDFInfo
- Publication number
- FI94287C FI94287C FI931954A FI931954A FI94287C FI 94287 C FI94287 C FI 94287C FI 931954 A FI931954 A FI 931954A FI 931954 A FI931954 A FI 931954A FI 94287 C FI94287 C FI 94287C
- Authority
- FI
- Finland
- Prior art keywords
- signal
- microphone
- chamber
- microphones
- noise
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/46—Special adaptations for use as contact microphones, e.g. on musical instrument, on stethoscope
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/103—Three dimensional
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3224—Passive absorbers
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/50—Miscellaneous
- G10K2210/509—Hybrid, i.e. combining different technologies, e.g. passive and active
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Multimedia (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI931954A FI94287C (fi) | 1993-04-29 | 1993-04-29 | Häiriönvaimennusmenetelmä ja anturikonstruktio signaalin mittaamiseksi kiinteän aineen pinnalta |
AU65403/94A AU6540394A (en) | 1993-04-29 | 1994-04-28 | Method for suppression of interferences and detector construction for measuring signals from the surface of solid substance |
PCT/FI1994/000165 WO1994025835A1 (fr) | 1993-04-29 | 1994-04-28 | Procede d'elimination des interferences et detecteur de mesure de signaux depuis la surface de substances solides |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI931954A FI94287C (fi) | 1993-04-29 | 1993-04-29 | Häiriönvaimennusmenetelmä ja anturikonstruktio signaalin mittaamiseksi kiinteän aineen pinnalta |
FI931954 | 1993-04-29 |
Publications (4)
Publication Number | Publication Date |
---|---|
FI931954A0 FI931954A0 (fi) | 1993-04-29 |
FI931954A FI931954A (fi) | 1994-10-30 |
FI94287B FI94287B (fi) | 1995-04-28 |
FI94287C true FI94287C (fi) | 1995-08-10 |
Family
ID=8537832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI931954A FI94287C (fi) | 1993-04-29 | 1993-04-29 | Häiriönvaimennusmenetelmä ja anturikonstruktio signaalin mittaamiseksi kiinteän aineen pinnalta |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU6540394A (fr) |
FI (1) | FI94287C (fr) |
WO (1) | WO1994025835A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2732807B1 (fr) * | 1995-04-04 | 1997-05-16 | Technofirst | Procede et dispositif personnels d'attenuation acoustique active, siege equipe du dispositif correspondant, et espace a attenuation acoustique active obtenu |
US7894622B2 (en) | 2006-10-13 | 2011-02-22 | Merry Electronics Co., Ltd. | Microphone |
DE202007007229U1 (de) * | 2007-05-21 | 2008-10-02 | Zumtobel Lighting Gmbh | Beleuchtungsanordnung insbesondere zum Beleuchten eines Arbeitsplatzes |
GB2574040B (en) * | 2018-05-24 | 2021-02-10 | Acurable Ltd | Enclosure |
JP7112489B2 (ja) * | 2018-06-15 | 2022-08-03 | エア・ウォーター・バイオデザイン株式会社 | 音取得装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3133990A (en) * | 1962-04-27 | 1964-05-19 | Altec Lansing Corp | Automatic level-adjustment circuit |
US4506551A (en) * | 1982-09-30 | 1985-03-26 | Becton Dickinson And Company | Transducer selecting system |
SE452946B (sv) * | 1984-01-30 | 1988-01-04 | Karolinska Inst | Anordning for overvakning av andningen hos spedbarn |
SE463065B (sv) * | 1989-02-06 | 1990-10-01 | Hoek Instr Ab | Mikrofon foer upptagning av kroppsljud |
-
1993
- 1993-04-29 FI FI931954A patent/FI94287C/fi not_active IP Right Cessation
-
1994
- 1994-04-28 AU AU65403/94A patent/AU6540394A/en not_active Abandoned
- 1994-04-28 WO PCT/FI1994/000165 patent/WO1994025835A1/fr active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO1994025835A1 (fr) | 1994-11-10 |
FI931954A (fi) | 1994-10-30 |
FI94287B (fi) | 1995-04-28 |
FI931954A0 (fi) | 1993-04-29 |
AU6540394A (en) | 1994-11-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BB | Publication of examined application | ||
MM | Patent lapsed |