FI94287C - Häiriönvaimennusmenetelmä ja anturikonstruktio signaalin mittaamiseksi kiinteän aineen pinnalta - Google Patents

Häiriönvaimennusmenetelmä ja anturikonstruktio signaalin mittaamiseksi kiinteän aineen pinnalta Download PDF

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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
Application number
FI931954A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI931954A (fi
FI94287B (fi
FI931954A0 (fi
Inventor
Kari Hannu Kallio
Original Assignee
Kari Hannu Kallio
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 Kari Hannu Kallio filed Critical Kari Hannu Kallio
Priority to FI931954A priority Critical patent/FI94287C/fi
Publication of FI931954A0 publication Critical patent/FI931954A0/fi
Priority to AU65403/94A priority patent/AU6540394A/en
Priority to PCT/FI1994/000165 priority patent/WO1994025835A1/fr
Publication of FI931954A publication Critical patent/FI931954A/fi
Application granted granted Critical
Publication of FI94287B publication Critical patent/FI94287B/fi
Publication of FI94287C publication Critical patent/FI94287C/fi

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)
FI931954A 1993-04-29 1993-04-29 Häiriönvaimennusmenetelmä ja anturikonstruktio signaalin mittaamiseksi kiinteän aineen pinnalta FI94287C (fi)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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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