EP 0098421 A3 19850417 - ELECTRIC HEARING AID
Title (en)
ELECTRIC HEARING AID
Publication
Application
Priority
DE 3224614 A 19820701
Abstract (en)
[origin: CA1211831A] An exemplary embodiment comprises an acoustic signal pickup, amplification and reproduction sections wherein the latter contains a plurality of sound sources which influence a shared sound transmission arrangement collecting the sound, influencing it upon formation of a specific transfer characteristic. Given such hearing aids, the originally set frequency characteristic should also be maintained given the maximally attainable output level. To this end, the disclosure provides two identical sound sources, proceeding from which the generated sound is supplied to the ear with specific adaptation to a particular individual hearing loss. For example, the desired transfer characteristic is achieved by establishing selected differential transmission properties for the respective acoustic channels leading from the respective sound sources to the shared passage leading to the ear. An inventively improved hearing aid is particularly suitable for employment as a hearing prothesis for hearing-impaired persons.
IPC 1-7
IPC 8 full level
H04R 1/22 (2006.01); H04R 25/00 (2006.01); H04R 25/02 (2006.01); H04R 25/04 (2006.01)
CPC (source: EP US)
H04R 1/225 (2013.01 - EP US); H04R 1/227 (2013.01 - EP US); H04R 25/48 (2013.01 - EP US); H04R 2225/59 (2013.01 - EP US)
Citation (search report)
- [X] DE 2303194 A1 19740725 - MICRO TECHNIC HUEBER & CO
- [Y] US 3772478 A 19731113 - MCCABE J, et al
- [Y] US 3909556 A 19750930 - JOHANSON DONALD L
- [A] DE 2506921 A1 19750828 - INDUSTRIAL RESEARCH PROD INC
- [A] FR 2490485 A1 19820326 - MICHAS FREDERIC [FR]
- [A] US 4109116 A 19780822 - VICTOREEN JOHN A
Designated contracting state (EPC)
AT CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0098421 A2 19840118; EP 0098421 A3 19850417; EP 0098421 B1 19880601; AT E34899 T1 19880615; CA 1211831 A 19860923; DE 3224614 A1 19840105; DE 3376950 D1 19880707; DE 8218876 U1 19851205; DK 301083 A 19840102; DK 301083 D0 19830630; JP S5922500 A 19840204; US 4629833 A 19861216
DOCDB simple family (application)
EP 83105876 A 19830615; AT 83105876 T 19830615; CA 431593 A 19830630; DE 3224614 A 19820701; DE 3376950 T 19830615; DE 8218876 U 19820701; DK 301083 A 19830630; JP 11948383 A 19830630; US 50733983 A 19830624