FR2734444B1 - TRANSDUCER FOR EAR AND EAR PLUG WITH ACTIVE NOISE USING THIS TRANSDUCER - Google Patents
TRANSDUCER FOR EAR AND EAR PLUG WITH ACTIVE NOISE USING THIS TRANSDUCERInfo
- Publication number
- FR2734444B1 FR2734444B1 FR9505837A FR9505837A FR2734444B1 FR 2734444 B1 FR2734444 B1 FR 2734444B1 FR 9505837 A FR9505837 A FR 9505837A FR 9505837 A FR9505837 A FR 9505837A FR 2734444 B1 FR2734444 B1 FR 2734444B1
- Authority
- FR
- France
- Prior art keywords
- transducer
- ear
- active noise
- plug
- ear plug
- 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.)
- Expired - Fee Related
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
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
-
- 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
- A61F11/08—Protective devices for the ears internal, e.g. earplugs
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9505837A FR2734444B1 (en) | 1995-05-17 | 1995-05-17 | TRANSDUCER FOR EAR AND EAR PLUG WITH ACTIVE NOISE USING THIS TRANSDUCER |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9505837A FR2734444B1 (en) | 1995-05-17 | 1995-05-17 | TRANSDUCER FOR EAR AND EAR PLUG WITH ACTIVE NOISE USING THIS TRANSDUCER |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2734444A1 FR2734444A1 (en) | 1996-11-22 |
FR2734444B1 true FR2734444B1 (en) | 1997-06-13 |
Family
ID=9479067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9505837A Expired - Fee Related FR2734444B1 (en) | 1995-05-17 | 1995-05-17 | TRANSDUCER FOR EAR AND EAR PLUG WITH ACTIVE NOISE USING THIS TRANSDUCER |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2734444B1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0906389D0 (en) * | 2009-04-15 | 2009-05-20 | Dbhi Ltd | Hearing protection apparatus |
CN108344803B (en) * | 2018-02-12 | 2020-10-20 | 重庆大学 | Research method for low-frequency noise processing by utilizing COMSOL and resonant cavity model |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3835340A (en) * | 1973-02-15 | 1974-09-10 | Edo Corp | Transducer corona shield |
US4281550A (en) * | 1979-12-17 | 1981-08-04 | North American Philips Corporation | Curved array of sequenced ultrasound transducers |
DE3834853C2 (en) * | 1988-10-13 | 1999-12-02 | Bayerische Motoren Werke Ag | Arrangement for reducing the noise level in the interior of a motor vehicle |
US5631965A (en) * | 1992-06-19 | 1997-05-20 | Chang; Joseph S. | Hearing protector |
-
1995
- 1995-05-17 FR FR9505837A patent/FR2734444B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2734444A1 (en) | 1996-11-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |