EP 0634084 B1 20000301 - HEARING AID COMPENSATING FOR ACOUSTIC FEEDBACK
Title (en)
HEARING AID COMPENSATING FOR ACOUSTIC FEEDBACK
Title (de)
HÖRGERÄT MIT AUSGLEICH DER AKUSTISCHEN RÜCKKOPPLUNG
Title (fr)
PROTHESE AUDITIVE A COMPENSATION DE LA REACTION ACOUSTIQUE
Publication
Application
Priority
- DK 9300106 W 19930323
- DK 43292 A 19920331
Abstract (en)
[origin: WO9320668A1] A hearing aid with digital, electronic compensation for acoustic feedback comprises a microphone (5), a preamplifier (7), a digital compensation circuit (3), an output amplifier (9) and a transducer (11). The digital circuit (3) comprises a noise generator (33) for the insertion of noise, and an adjustable, digital filter (27) for the adaptation of the feedback signal. The adaptation takes place using a correlation circuit (31). The circuit further comprises a digital circuit (79) which carries out a statistical evaluation of the filter coefficients in the correlation circuit, and changes the feedback function in accordance with this evaluation.
IPC 1-7
IPC 8 full level
H04R 25/00 (2006.01)
CPC (source: EP)
H04R 25/453 (2013.01); H04R 25/505 (2013.01)
Designated contracting state (EPC)
CH DE FR GB LI
DOCDB simple family (publication)
WO 9320668 A1 19931014; AU 3948293 A 19931108; DE 69327951 D1 20000406; DE 69327951 T2 20000817; DK 170600 B1 19951106; DK 43292 A 19931001; DK 43292 D0 19920331; EP 0634084 A1 19950118; EP 0634084 B1 20000301; JP H07505271 A 19950608
DOCDB simple family (application)
DK 9300106 W 19930323; AU 3948293 A 19930323; DE 69327951 T 19930323; DK 43292 A 19920331; EP 93908828 A 19930323; JP 51699393 A 19930323