NDLI: Howling detection in hearing aids based on generalized Teager-Kaiser operator

Content Provider	ACM Digital Library
Author	Panahi, Issa M. S. Hansen, John H. L. Khoubrouy, Soudeh A.
Copyright Year	2015
Abstract	With the ongoing miniaturization in the hearing aid industry, acoustical coupling between the loudspeaker and the microphone(s) of the hearing aid causes a major problem to users. Howling is one of the most severe and annoying consequences of this acoustical coupling. This study presents a howling detection method using the Generalized Teager-Kaiser Operator (GTKO). Since the GTKO is both time and frequency sensitive, its resolution parameter must be assigned properly to ensure satisfactory performance of this operator in the frequency range of the input signal for the hearing aid. In order to cover the entire band of the input signal with appropriate resolution parameters, the input signal is decomposed into a filterbank (i.e., uniform and nonuniform filterbanks). GTKO is applied to the output of each band to detect the howling, and the resolution parameter of the GTKO block is selected depending on the central frequency of that particular band. Experimental results compare the performance of each proposed method with two known howling detection approaches, Peak-to-harmonic power ratio (PHPR) approach and a multiple-feature approach. The proposed method has high detection probability and short detection time. It is also shown that considering a hybrid algorithm which includes the PHPR approach with each of the proposed methods (i.e. combination of GTKO blocks with different types of filterbanks) results in lower false alarm probability.
Starting Page	154
Ending Page	161
Page Count	8
File Format	PDF
ISSN	23299290
e-ISSN	23299304
DOI	10.1109/TASLP.2014.2377575
Volume Number	23
Issue Number	1
Journal	IEEE/ACM Transactions on Audio, Speech and Language Processing (TASLP)
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2015-01-01
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Teager-Kaiser operator Acoustic feedback Hearing aid Howling detection Non-uniform filterbank Uniform filterbank
Content Type	Text
Resource Type	Article
Subject	Instrumentation Computational Mathematics Signal Processing Electrical and Electronic Engineering Acoustics and Ultrasonics Speech and Hearing Media Technology

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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