A new delayless sub-band filtering method for cancelling the effect of feedback path in Hearing aid systems

Author

Khoubrouy, Soudeh A. ; Panahi, Issa M S ; Milani, Ali A.

fYear

2011

fDate

Aug. 30 2011-Sept. 3 2011

Firstpage

7920

Lastpage

7923

Abstract

Performance of commonly used Hearing aid systems is degraded by the presence of acoustic feedback between loudspeaker and microphone. Prediction Error Method Adaptive Feedback Canceller (PEM-AFC) has been proposed recently that could attenuate the feedback effect. In this paper, we present a new delayless frequency-based sub-band filtering method for alleviating the effect of feedback path for the Hearing aid systems. The proposed method avoids sub-band distortions and has low computational complexity making it suitable for low-power cost-effective hearing aid system designs. Performances of the two methods are compared and simulation results are presented.

Keywords

bioacoustics; computational complexity; feedback; filtering theory; hearing aids; loudspeakers; medical signal processing; microphones; acoustic feedback; computational complexity; delayless subband filtering; feedback path; hearing aid systems; loudspeaker; microphone; prediction error method adaptive feedback canceller; subband distortions; Adaptation models; Auditory system; Computational complexity; Finite impulse response filter; Frequency domain analysis; Speech; Vectors; Algorithms; Artifacts; Computer Simulation; Feedback; Hearing Aids; Least-Squares Analysis; Signal Processing, Computer-Assisted; Speech;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, EMBC, 2011 Annual International Conference of the IEEE

Conference_Location

Boston, MA

ISSN

1557-170X

Print_ISBN

978-1-4244-4121-1

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/IEMBS.2011.6091953

Filename

6091953