EP 1118247 A2 20010725 - BAND-LIMITED ADAPTIVE FEEDBACK CANCELLER FOR HEARING AIDS
Title (en)
BAND-LIMITED ADAPTIVE FEEDBACK CANCELLER FOR HEARING AIDS
Title (de)
BANDBEGRENZTE ADAPTIVE RÜCKKOPPLUNGSUNTERDRÜCKUNG FÜR HÖRHILFEGERÄTE
Title (fr)
DISPOSITIF ADAPTATIF DE SUPPRESSION DE L'EFFET LARSEN A BANDE LIMITEE DESTINE AUX PROTHESES AUDITIVES
Publication
Application
Priority
- US 9922757 W 19990930
- US 10255798 P 19980930
Abstract (en)
[origin: WO0019605A2] An improved method for adaptively cancelling acoustic feedback in hearing aids and other audio amplification devices. Feedback cancellation is limited to a frequency band that encompasses all unstable frequencies. By limiting the bandwidth of the feedback cancellation signal, the distortion due to the adaptive filter is minimized and limited only to the unstable feedback regions. A relatively simple signal processing algorithm is used to produce highly effective results with minimal signal distortion.
IPC 1-7
IPC 8 full level
H04R 3/02 (2006.01); H03H 21/00 (2006.01); H04B 3/23 (2006.01); H04R 25/00 (2006.01)
CPC (source: EP)
H03H 21/0012 (2013.01); H04R 25/453 (2013.01)
Citation (search report)
See references of WO 0019605A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0019605 A2 20000406; WO 0019605 A3 20000706; AU 6168099 A 20000417; EP 1118247 A2 20010725; JP 2002526961 A 20020820
DOCDB simple family (application)
US 9922757 W 19990930; AU 6168099 A 19990930; EP 99948516 A 19990930; JP 2000572997 A 19990930