Title :
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.
fDate :
Aug. 30 2011-Sept. 3 2011
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;
Conference_Titel :
Engineering in Medicine and Biology Society, EMBC, 2011 Annual International Conference of the IEEE
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-4121-1
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2011.6091953
