Design and implementation of reconfigurable digital filter bank for hearing aid

Raj, S. Anso; Shaji, Athira

doi:10.1109/icett.2016.7873664

Cited by 9 publications

(3 citation statements)

References 4 publications

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“…The Filter bank is an important functional block in digital hearing aids that decomposes the input signal into different bands [16,17]. The Gain of individual stages can be varied based on the band requirements.…”

Section: Foundation Of Filter Bankmentioning

confidence: 99%

Speech Separation Methodology for Hearing Aid

Esra¹,

Sukhi²

2023

Computer Systems Science and Engineering

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In the design of hearing aids (HA), the real-time speech-enhancement is done. The digital hearing aids should provide high signal-to-noise ratio, gain improvement and should eliminate feedback. In generic hearing aids the performance towards different frequencies varies and non uniform. Existing noise cancellation and speech separation methods drops the voice magnitude under the noise environment. The performance of the HA for frequency response is non uniform. Existing noise suppression methods reduce the required signal strength also. So, the performance of uniform sub band analysis is poor when hearing aid is concern. In this paper, a speech separation method using Non-negative Matrix Factorization (NMF) algorithm is proposed for wavelet decomposition. The Proposed non-uniform filter-bank was validated by parameters like band power, Signal-to-noise ratio (SNR), Mean Square Error (MSE), Signal to Noise and Distortion Ratio (SINAD), Spurious-free dynamic range (SFDR), error and time. The speech recordings before and after separation was evaluated for quality using objective speech quality measures International Telecommunication Union -Telecommunication standard ITU-T P.862.

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Section: Foundation Of Filter Bankmentioning

confidence: 99%

Speech Separation Methodology for Hearing Aid

Esra¹,

Sukhi²

2023

Computer Systems Science and Engineering

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“…Adjustable multiple band spectral decomposition schemes: Hearing device amplifiesinput signals for increased hearing threshold of the patient. However, if gain is applied to entire frequency region, intensities of few signals post amplification might increase above the discomfort threshold of the hearing impaired resulting in hearing pain [28]. So,complete frequency band needs to be separated into many sub bands and every sub band must possess its own amplification coefficient.…”

Section: A Design Challenges In Reconfigurable Filter Bank Designmentioning

confidence: 99%

“…Hearing aid requires reconfigurable filters which requires low power and area and gives high throughput. Distributed arithmetic (DA) method which substitutes multiplications and additions with a look up table and shifter accumulator can be a great solution for above mentioned requirement [28]. To achieve reconfigurability in FIR filter, Bhagya Lakshmi.…”

Section: A Filter Designs Based On Distributed Arithmeticmentioning

confidence: 99%

Reconfigurable Filter Bank Design Techniques for Hearing Aid Performance Improvement

Shrivastav¹,

Kolte²

2020

IJRTE

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Hearing is one of the most crucial sense for human beings as it connects them to external world. Hearing loss impairs communication which is an essential human function. Hearing disability has massive negative impact on life, work, physical and emotional well-being as well as relationships and is rated as the third most common health problem affecting relations and quality of life. Hearing aid devices can selectively intensify sound signals in order to suit the hearing characteristics of the patients and is a boon for people with hearing misfortune. However, there is a huge gap between the potential and actual hearing aid users. This work provides a critical look into the various challenges posed by hearing aid users, the comparative of the existing state-of-art hearing devices and throws light on bottlenecks in hearing aid design and performance. Filter bank, being the holy grail of Digital Hearing aid, needs special attention for improving the hearing aid performance. Reconfigurability is the need of the hour for providing flexible and tailormade hearing aids that can suit individual hearing requirements. The paper discusses and gives an in-depth insight into the techniques for reconfigurable Filter bank design for performance augmentationin terms of parameters like Signal quality, Auditory compensation, Computational and Hardware complexity, area, speed, power, etc.

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