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SE8900392L - MICROPHONE FOR RECORDING BODY SOUND - Google Patents

MICROPHONE FOR RECORDING BODY SOUND

Info

Publication number
SE8900392L
SE8900392L SE8900392A SE8900392A SE8900392L SE 8900392 L SE8900392 L SE 8900392L SE 8900392 A SE8900392 A SE 8900392A SE 8900392 A SE8900392 A SE 8900392A SE 8900392 L SE8900392 L SE 8900392L
Authority
SE
Sweden
Prior art keywords
microphone
housing
elements
cavities
recording body
Prior art date
Application number
SE8900392A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE463065B (en
SE8900392D0 (en
Inventor
B Hoek
Original Assignee
Hoek Instr Ab
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 Hoek Instr Ab filed Critical Hoek Instr Ab
Priority to SE8900392A priority Critical patent/SE463065B/en
Publication of SE8900392D0 publication Critical patent/SE8900392D0/en
Priority to PCT/SE1990/000066 priority patent/WO1990009083A1/en
Priority to AU50387/90A priority patent/AU5038790A/en
Publication of SE8900392L publication Critical patent/SE8900392L/en
Publication of SE463065B publication Critical patent/SE463065B/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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B7/00—Instruments for auscultation
    • A61B7/02—Stethoscopes
    • A61B7/04—Electric stethoscopes

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Signal Processing (AREA)
  • Biomedical Technology (AREA)
  • Multimedia (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

Microphone for detecting bodily sounds consisting of a sealed and rigid housing (1), the inner of which is divided into at least two cavities (2, 3) separated by an elastic membrane (4) on which a mass element (5) is placed. The cavities are connected to pressure sensitive microphone elements (6, 7), e.g. capacitive electret elements (15) with built-in impedance converters (16) interconnected in a bridge configuration. The connection between the housing (1) and the microphone elements takes place either through leads in the form of tubing (11, 12) or by mounting the microphone elements (6, 7) through openings (20, 21) in the walls of the housing.
SE8900392A 1989-02-06 1989-02-06 MICROPHONE FOR RECORDING BODY SOUND SE463065B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE8900392A SE463065B (en) 1989-02-06 1989-02-06 MICROPHONE FOR RECORDING BODY SOUND
PCT/SE1990/000066 WO1990009083A1 (en) 1989-02-06 1990-02-01 Microphone for detecting bodily sounds
AU50387/90A AU5038790A (en) 1989-02-06 1990-02-01 Microphone for detecting bodily sounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8900392A SE463065B (en) 1989-02-06 1989-02-06 MICROPHONE FOR RECORDING BODY SOUND

Publications (3)

Publication Number Publication Date
SE8900392D0 SE8900392D0 (en) 1989-02-06
SE8900392L true SE8900392L (en) 1990-08-07
SE463065B SE463065B (en) 1990-10-01

Family

ID=20374953

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8900392A SE463065B (en) 1989-02-06 1989-02-06 MICROPHONE FOR RECORDING BODY SOUND

Country Status (3)

Country Link
AU (1) AU5038790A (en)
SE (1) SE463065B (en)
WO (1) WO1990009083A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI94287C (en) * 1993-04-29 1995-08-10 Kari Hannu Kallio Method for noise attenuation and encoder construction for measuring a signal on the surface of solid material
NL9401421A (en) * 1994-09-01 1996-04-01 Tech Handelsonderneming Theuni Capacitor microphone for installation in a helmet
DE69637308T2 (en) * 1995-05-11 2008-02-28 Mts Systems Corp., Eden Prairie Sensor arrangement with a waveguide and a return conductor
DE10212726A1 (en) * 2002-03-21 2003-10-02 Armin Bernhard Sound transducer for an implantable hearing aid

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1008027A (en) * 1963-08-09 1965-10-22 Marconi Co Ltd Improvements in or relating to cardiophone arrangements

Also Published As

Publication number Publication date
SE463065B (en) 1990-10-01
AU5038790A (en) 1990-08-24
SE8900392D0 (en) 1989-02-06
WO1990009083A1 (en) 1990-08-09

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