Title :
Some notes on feedback suppression with adaptive filters in hearing aids
Author :
Knecht, Wolfgang G.
Author_Institution :
Phonak AG, Staefa, Switzerland
Abstract :
This paper discusses some important issues concerning feedback cancellation in hearing aids using adaptive filters. We summarize the main benefits of an anti-feedback system and comment on the pros and cons of a frequency-domain implementation. The length of the adaptive filter is dealt with and important delay elements in the algorithm are described. Finally, we comment on the problem of adaptation in the presence of uncorrelated additive noise which, in this case, is the desired input signal to the hearing aid
Keywords :
acoustic noise; acoustic signal processing; adaptive filters; adaptive signal processing; delays; feedback; frequency-domain synthesis; handicapped aids; hearing aids; noise abatement; adaptive filters; algorithm; anti-feedback system; delay elements; desired input signal; feedback cancellation; feedback suppression; filter length; frequency-domain implementation; hearing aids; uncorrelated additive noise; Adaptive filters; Auditory system; Delay; Ear; Feedback; Hearing aids; Instruments; Signal processing; Signal processing algorithms; Vents;
Conference_Titel :
Applications of Signal Processing to Audio and Acoustics, 1997. 1997 IEEE ASSP Workshop on
Conference_Location :
New Paltz, NY
Print_ISBN :
0-7803-3908-8
DOI :
10.1109/ASPAA.1997.625583
