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<strong>Multiple Bandwidth FIR Filter Design with Adaptive Algorithms for Hearing Aid Systems</strong>

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Title Statement <strong>Multiple Bandwidth FIR Filter Design with Adaptive Algorithms for Hearing Aid Systems</strong>
 
Added Entry - Uncontrolled Name K, Mariammal ; Assistant Professor, Department of Electronics, Madras Institute of Technology, Anna University, Chennai, Tamil Nadu
R, Sherin Mary ; Department of Electronics, Madras Institute of Technology, Anna University, Chennai, Tamil Nadu
J, Brittopari ; Department of Electronics and Communication Engineering, Presidency University, Bangalore
D, Vaithiyanathan ; Assistant Professor, Department of Electronics and Communication Engineering National Institute of Technology Delhi, Delhi - 110040
 
Uncontrolled Index Term Signal Processing; FIR filter, bandwidth; windowing; hearing losses modelling; LMS; NLMS; RLS
 
Summary, etc. Digital Filter design plays a vital role in signal processing and communication applications. This paper proposes a hearing loss system model with Variable Bandwidth FIR Filter (VBF) and adaptive algorithms for the application to listening. The tunable band filter is designed to provide an appropriate sound level. This filter has several sub-filters each of which is designed with set of selected bandwidths. The sub-bands obtained are adjusted with proper magnitude by trial and error method. Algorithms such as Least Mean Square (LMS), Normalized Least Mean Square (NLMS) and Recursive Least Squares (RLS) are incorporated to improve the quality of the signal. The filter thus designed is examined by taking a number of audio signals. The tests on various hearing loss cases with different type of input signal suggest that this method is capable of reproducing a signal which sounds exactly the same as the original signal. The multiple bandwidth filters is analyzed with mild, moderate, profound and severe hearing loss patterns and the results are reported. The matching error is calculated between ideal response and actual response. The result show that the designed filter provides acceptable minimum matching error and it lies in the range 0 to 2.5dB.This filter design is implemented in TMS320C6711 processor and is tested for sinusoidal input signal.
 
Publication, Distribution, Etc. Indian Journal of Pure & Applied Physics (IJPAP)
2020-09-15 10:46:24
 
Electronic Location and Access application/pdf
http://op.niscair.res.in/index.php/IJPAP/article/view/31851
 
Data Source Entry Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 58, ##issue.no## 8 (2020): Indian Journal of Pure & Applied Physics
 
Language Note en
 
Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJPAP/article/download/31851/465498062
 
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