Title :
An instrumental variable method for adaptive feedback cancellation in hearing aids
Author :
Spriet, Ann ; Proudler, Ian ; Moonen, Marc ; Wouters, Jan
Author_Institution :
ESAT/SCD-SISTA, Katholieke Univ., Leuven, Belgium
Abstract :
We propose an instrumental variable method for adaptive feedback cancellation (IV-AFC) in hearing aids that is based on the autoregressive modelling of the desired signal. The IV-AFC offers better feedback suppression for spectrally colored signals than the standard continuous adaptation feedback cancellers. In contrast to a previously proposed prediction error method based feedback canceller, the IV-AFC does not suffer from stability problems when the adaptive feedback canceller is highly time-varying.
Keywords :
acoustic signal processing; adaptive signal processing; autoregressive processes; feedback; hearing aids; interference suppression; acoustic feedback; adaptive feedback cancellation; autoregressive modelling; continuous adaptation feedback cancellers; feedback suppression; hearing aids; instrumental variable method; prediction error method; spectrally colored signals; Adaptive filters; Auditory system; Delay estimation; Feedback loop; Hearing aids; Instruments; Signal processing; Signal processing algorithms; Stability; White noise;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on
Print_ISBN :
0-7803-8874-7
DOI :
10.1109/ICASSP.2005.1415663
