FI931954A - Method for noise attenuation and encoder construction for measuring a signal on the surface of solid material - Google Patents

Method for noise attenuation and encoder construction for measuring a signal on the surface of solid material Download PDF

Info

Publication number
FI931954A
FI931954A FI931954A FI931954A FI931954A FI 931954 A FI931954 A FI 931954A FI 931954 A FI931954 A FI 931954A FI 931954 A FI931954 A FI 931954A FI 931954 A FI931954 A FI 931954A
Authority
FI
Finland
Prior art keywords
measuring
signal
solid material
noise attenuation
encoder construction
Prior art date
Application number
FI931954A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI94287B (en
FI94287C (en
FI931954A0 (en
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/en
Publication of FI931954A0 publication Critical patent/FI931954A0/en
Priority to AU65403/94A priority patent/AU6540394A/en
Priority to PCT/FI1994/000165 priority patent/WO1994025835A1/en
Publication of FI931954A publication Critical patent/FI931954A/en
Publication of FI94287B publication Critical patent/FI94287B/en
Application granted granted Critical
Publication of FI94287C publication Critical patent/FI94287C/en

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 Method for noise attenuation and encoder construction for measuring a signal on the surface of solid material FI94287C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI931954A FI94287C (en) 1993-04-29 1993-04-29 Method for noise attenuation and encoder construction for measuring a signal on the surface of solid material
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 (en) 1993-04-29 1994-04-28 Method for suppression of interferences and detector construction for measuring signals from the surface of solid substance

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI931954A FI94287C (en) 1993-04-29 1993-04-29 Method for noise attenuation and encoder construction for measuring a signal on the surface of solid material
FI931954 1993-04-29

Publications (4)

Publication Number Publication Date
FI931954A0 FI931954A0 (en) 1993-04-29
FI931954A true FI931954A (en) 1994-10-30
FI94287B FI94287B (en) 1995-04-28
FI94287C FI94287C (en) 1995-08-10

Family

ID=8537832

Family Applications (1)

Application Number Title Priority Date Filing Date
FI931954A FI94287C (en) 1993-04-29 1993-04-29 Method for noise attenuation and encoder construction for measuring a signal on the surface of solid material

Country Status (3)

Country Link
AU (1) AU6540394A (en)
FI (1) FI94287C (en)
WO (1) WO1994025835A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2732807B1 (en) * 1995-04-04 1997-05-16 Technofirst PERSONAL ACTIVE SOUND ATTENUATION METHOD AND DEVICE, SEAT PROVIDED WITH THE CORRESPONDING DEVICE, AND ACTIVE SOUND ATTENUATION SPACE OBTAINED
US7894622B2 (en) 2006-10-13 2011-02-22 Merry Electronics Co., Ltd. Microphone
DE202007007229U1 (en) * 2007-05-21 2008-10-02 Zumtobel Lighting Gmbh Illumination arrangement, in particular for illuminating a workstation
GB2574040B (en) * 2018-05-24 2021-02-10 Acurable Ltd Enclosure
JP7112489B2 (en) * 2018-06-15 2022-08-03 エア・ウォーター・バイオデザイン株式会社 sound acquisition device

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 (en) * 1984-01-30 1988-01-04 Karolinska Inst DEVICE FOR MONTHLY BREATHING
SE463065B (en) * 1989-02-06 1990-10-01 Hoek Instr Ab MICROPHONE FOR RECORDING BODY SOUND

Also Published As

Publication number Publication date
AU6540394A (en) 1994-11-21
FI94287B (en) 1995-04-28
WO1994025835A1 (en) 1994-11-10
FI94287C (en) 1995-08-10
FI931954A0 (en) 1993-04-29

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BB Publication of examined application
MM Patent lapsed