CA2136948A1 - Passive selective headset - Google Patents

Passive selective headset

Info

Publication number
CA2136948A1
CA2136948A1 CA002136948A CA2136948A CA2136948A1 CA 2136948 A1 CA2136948 A1 CA 2136948A1 CA 002136948 A CA002136948 A CA 002136948A CA 2136948 A CA2136948 A CA 2136948A CA 2136948 A1 CA2136948 A1 CA 2136948A1
Authority
CA
Canada
Prior art keywords
speech
noise
headset
filter
wire
Prior art date
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.)
Abandoned
Application number
CA002136948A
Other languages
English (en)
French (fr)
Inventor
Robert D. Evans
David Claybaugh
Graham P. Eatwell
Michael J. Parrella
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Noise Cancellation Technologies Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP92913918A priority Critical patent/EP0643882A1/en
Priority to CA002136948A priority patent/CA2136948A1/en
Priority to PCT/US1992/004566 priority patent/WO1993026083A1/en
Priority claimed from PCT/US1992/004566 external-priority patent/WO1993026083A1/en
Publication of CA2136948A1 publication Critical patent/CA2136948A1/en
Abandoned legal-status Critical Current

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
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1083—Reduction of ambient noise
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
    • A61F11/06—Protective devices for the ears
    • A61F11/14—Protective devices for the ears external, e.g. earcaps or earmuffs
    • A61F11/145—Protective devices for the ears external, e.g. earcaps or earmuffs electric, e.g. for active noise reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Psychology (AREA)
  • Otolaryngology (AREA)
  • Biophysics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Signal Processing (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Circuit For Audible Band Transducer (AREA)
CA002136948A 1992-06-05 1992-06-05 Passive selective headset Abandoned CA2136948A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP92913918A EP0643882A1 (en) 1992-06-05 1992-06-05 Passive selective headset
CA002136948A CA2136948A1 (en) 1992-06-05 1992-06-05 Passive selective headset
PCT/US1992/004566 WO1993026083A1 (en) 1992-06-05 1992-06-05 Passive selective headset

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002136948A CA2136948A1 (en) 1992-06-05 1992-06-05 Passive selective headset
PCT/US1992/004566 WO1993026083A1 (en) 1992-06-05 1992-06-05 Passive selective headset

Publications (1)

Publication Number Publication Date
CA2136948A1 true CA2136948A1 (en) 1993-12-23

Family

ID=4154764

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002136948A Abandoned CA2136948A1 (en) 1992-06-05 1992-06-05 Passive selective headset

Country Status (2)

Country Link
EP (1) EP0643882A1 (enExample)
CA (1) CA2136948A1 (enExample)

Also Published As

Publication number Publication date
EP0643882A1 (en) 1995-03-22
EP0643882A4 (enExample) 1995-04-12

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued