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WO1984002267A1 - Appareil de protection auditive contre des volumes sonores surnormaux soudains - Google Patents

Appareil de protection auditive contre des volumes sonores surnormaux soudains Download PDF

Info

Publication number
WO1984002267A1
WO1984002267A1 PCT/EP1982/000269 EP8200269W WO8402267A1 WO 1984002267 A1 WO1984002267 A1 WO 1984002267A1 EP 8200269 W EP8200269 W EP 8200269W WO 8402267 A1 WO8402267 A1 WO 8402267A1
Authority
WO
WIPO (PCT)
Prior art keywords
transistor
noise
hearing
suppression unit
noise suppression
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.)
Ceased
Application number
PCT/EP1982/000269
Other languages
German (de)
English (en)
Inventor
Bentum Abraham Jean Pierre Van
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.)
BENTUM ABRAHAM JEAN PIERRE VAN
Original Assignee
BENTUM ABRAHAM JEAN PIERRE VAN
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 BENTUM ABRAHAM JEAN PIERRE VAN filed Critical BENTUM ABRAHAM JEAN PIERRE VAN
Priority to PCT/EP1982/000269 priority Critical patent/WO1984002267A1/fr
Priority to EP83900031A priority patent/EP0128894A1/fr
Publication of WO1984002267A1 publication Critical patent/WO1984002267A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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

Definitions

  • the invention aims at a hearing protection device against suddenly occurring supernormal volumes.
  • the hearing protection device now enables the advantages of a conversation to be conducted by means of a telephone / microphone connection without the known disadvantages of amplifying the noise also occurring.
  • the hearing protection device is provided with a conventional anti-noise capsule, among other things, to enable normal conversations in an environment with continuity by means of a built-in telephone which is operated by a signaling microphone, it being provided with a noise suppression unit which is only briefly an intensification of a suddenly occurring supernormal hearing-impairing ⁇ noise disturbance is temporarily electronically suppressed for a maximum of the period thereof.
  • the era depression unit receives a ring line, old in series the microphone on the one hand and ice switch and a battery on the other hand; in between are two parallel circuit connections; in one of them the switch runs current in series via the two telephones to the collector and on to the emitter of a first transistor; in the second the switching current runs in series through a resistor to the collector and on to the emitter of a second transistor; the base of the first transistor is connected to the collector of the second transistor via an RC parallel circuit and the microphone is connected via a capacitor to the base of the second transistor, the collector and base of which are connected to one another via a further resistor.
  • the noise suppression unit apart from the telephones, is located above the headband and has the switch button on the outside.
  • FIG. 1 shows a schematic illustration of an anti-noise capsule
  • FIG. 2 shows the electronic circuit for the noise suppression unit
  • FIG. 3 shows it from left to right.
  • the perforated microphone cover plate On the right, the perforated microphone cover plate, a top view of the built-in noise reduction unit and the front of it with the switch button.
  • the two capsules 1, 2 are provided with telephones T 1 and T 2 and the connecting cords 3, 4 lead to a flat box 5 which is fastened on the headband 6 approximately in the middle.
  • the box 5 there is the switch S, the battery B, the microphone K and, apart from the two telephones T 1 , T 2 , the noise suppression unit L.
  • the button 7 and the cover plate 8, which is perforated, are further shown in FIG 3 shown.
  • the socket 5 has two openings for the cords on the underside and is provided with a removable cover (not shown here) for confusing a battery.
  • the ring line contains the battery B, the switch S, and the microphone K. in series with one another. There are parallel circuit connections in the ring line between points YY and ZZ. The two transistors V 1 and V 2 connected to the loop with their emitters. The first
  • Transistor V 2 stands with its collector on the two telephones
  • the second transistor V 1 is connected via the node K with the resistor R 2 to the ring line and further via the resistor R 1 with its base on the capacitor C 1 further connected to the microphone E.
  • the base of the first transistor V 2 is by means of the RC parallel circuit with a resistor R 3 and a capacitor C 2 on dea
  • Node K and further connected to the collector of the second transistor V 1 .
  • the effect of the noise suppression unit is that when a sudden noise disturbance occurs, for example a shot, the transistor V 2 via R 3 has a positive voltage and is blocked for a short time, about 0.2 seconds.
  • the can 5, which is drawn quite large here, can possibly also be made very flat so that the headband 6 only shows a thickening.
  • 1.2 microphones can also be installed in each capsule and the switch can also be located in the capsule without deviating significantly from the principle of the noise suppression unit.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Acoustics & Sound (AREA)
  • Biophysics (AREA)
  • Otolaryngology (AREA)
  • Psychology (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Telephone Set Structure (AREA)

Abstract

Un appareil de protection auditive pour l'isolation acoustique individuelle contre des volumes sonores surnormaux soudains, en particulier des coups de feu et autres nuisances sonores discontinues nuisibles pour l'ouïe, est doté d'un casque anti-bruit habituel. Les conversations se déroulant normalement dans un environnement soumis à un bruit continu peuvent être poursuivies grâce à un téléphone intégré qui est desservi par un microphone transmettant des signaux. L'appareil de protection auditive est de plus doté d'une unité d'élimination électronique des bruits qui n'élimine aussitôt que pour une courte durée une amplification d'une nuisance sonore surnormale soudaine pendant tout au plus la période audible; l'unité d'élimination des bruits est située, abstraction faite du téléphone, au-dessus du casque et possède un bouton de commande sur son côté.
PCT/EP1982/000269 1982-12-15 1982-12-15 Appareil de protection auditive contre des volumes sonores surnormaux soudains Ceased WO1984002267A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/EP1982/000269 WO1984002267A1 (fr) 1982-12-15 1982-12-15 Appareil de protection auditive contre des volumes sonores surnormaux soudains
EP83900031A EP0128894A1 (fr) 1982-12-15 1982-12-15 Appareil de protection auditive contre des volumes sonores surnormaux soudains

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1982/000269 WO1984002267A1 (fr) 1982-12-15 1982-12-15 Appareil de protection auditive contre des volumes sonores surnormaux soudains

Publications (1)

Publication Number Publication Date
WO1984002267A1 true WO1984002267A1 (fr) 1984-06-21

Family

ID=8164867

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1982/000269 Ceased WO1984002267A1 (fr) 1982-12-15 1982-12-15 Appareil de protection auditive contre des volumes sonores surnormaux soudains

Country Status (2)

Country Link
EP (1) EP0128894A1 (fr)
WO (1) WO1984002267A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2231236A (en) * 1989-03-21 1990-11-07 Samsung Electronics Co Ltd Preventing acoustic shock in a telephone
WO1994000089A1 (fr) * 1992-06-19 1994-01-06 Joseph Sylvester Chang Protection antibruit pour les oreilles

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7644446B2 (en) * 2003-10-23 2010-01-05 Microsoft Corporation Encryption and data-protection for content on portable medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1359655A (fr) * 1962-12-10 1964-04-30 Casque isolateur de bruits-écouteur à réception réglable
DE2429175A1 (de) * 1973-06-18 1975-01-09 Lennartsfors Mekaniska Verksta Schallventil
BE892834A (nl) * 1982-04-14 1982-08-02 Geerts Noel Schotonderdrukker

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1359655A (fr) * 1962-12-10 1964-04-30 Casque isolateur de bruits-écouteur à réception réglable
DE2429175A1 (de) * 1973-06-18 1975-01-09 Lennartsfors Mekaniska Verksta Schallventil
BE892834A (nl) * 1982-04-14 1982-08-02 Geerts Noel Schotonderdrukker

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2231236A (en) * 1989-03-21 1990-11-07 Samsung Electronics Co Ltd Preventing acoustic shock in a telephone
GB2231236B (en) * 1989-03-21 1993-09-29 Samsung Electronics Co Ltd Preventing acoustic shock in a telephone
WO1994000089A1 (fr) * 1992-06-19 1994-01-06 Joseph Sylvester Chang Protection antibruit pour les oreilles

Also Published As

Publication number Publication date
EP0128894A1 (fr) 1984-12-27

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