JPS4997487A - - Google Patents
Info
- Publication number
- JPS4997487A JPS4997487A JP13973973A JP13973973A JPS4997487A JP S4997487 A JPS4997487 A JP S4997487A JP 13973973 A JP13973973 A JP 13973973A JP 13973973 A JP13973973 A JP 13973973A JP S4997487 A JPS4997487 A JP S4997487A
- Authority
- JP
- Japan
- 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.)
- Pending
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
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/40—Arrangements for obtaining a desired directivity characteristic
- H04R25/402—Arrangements for obtaining a desired directivity characteristic using contructional means
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C11/00—Non-optical adjuncts; Attachment thereof
- G02C11/06—Hearing aids
-
- 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
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/38—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
- H04R19/01—Electrostatic transducers characterised by the use of electrets
- H04R19/016—Electrostatic transducers characterised by the use of electrets for microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
- H04R19/04—Microphones
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Otolaryngology (AREA)
- Signal Processing (AREA)
- General Health & Medical Sciences (AREA)
- Optics & Photonics (AREA)
- Ophthalmology & Optometry (AREA)
- General Physics & Mathematics (AREA)
- Neurosurgery (AREA)
- Eyeglasses (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT1090872A AT318033B (de) | 1972-12-20 | 1972-12-20 | Mit einem Elektret ausgerüstetes Kondensatormikrophon, insbesondere für Hörbrillen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4997487A true JPS4997487A (US06312121-20011106-C00033.png) | 1974-09-14 |
Family
ID=3625482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13973973A Pending JPS4997487A (US06312121-20011106-C00033.png) | 1972-12-20 | 1973-12-17 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS4997487A (US06312121-20011106-C00033.png) |
| AT (1) | AT318033B (US06312121-20011106-C00033.png) |
| DE (1) | DE2362874A1 (US06312121-20011106-C00033.png) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT383428B (de) * | 1984-03-22 | 1987-07-10 | Goerike Rudolf | Brillengestell zur verbesserung des natuerlichen hoerens |
| DE8529437U1 (de) * | 1985-10-16 | 1987-06-11 | Siemens AG, 1000 Berlin und 8000 München | Richtmikrofon |
| DE8529458U1 (de) * | 1985-10-16 | 1987-05-07 | Siemens AG, 1000 Berlin und 8000 München | Hörgerät |
| AT407815B (de) * | 1990-07-13 | 2001-06-25 | Viennatone Gmbh | Hörgerät |
-
1972
- 1972-12-20 AT AT1090872A patent/AT318033B/de not_active IP Right Cessation
-
1973
- 1973-12-17 JP JP13973973A patent/JPS4997487A/ja active Pending
- 1973-12-18 DE DE19732362874 patent/DE2362874A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| AT318033B (de) | 1974-09-25 |
| DE2362874A1 (de) | 1974-06-27 |
