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The use of PIC Microcontroller in Hearing Aids with Automatic Gain Control

by Nivin Ghamry
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 159 - Number 4
Year of Publication: 2017
Authors: Nivin Ghamry
10.5120/ijca2017912920

Nivin Ghamry . The use of PIC Microcontroller in Hearing Aids with Automatic Gain Control. International Journal of Computer Applications. 159, 4 ( Feb 2017), 41-46. DOI=10.5120/ijca2017912920

@article{ 10.5120/ijca2017912920,
author = { Nivin Ghamry },
title = { The use of PIC Microcontroller in Hearing Aids with Automatic Gain Control },
journal = { International Journal of Computer Applications },
issue_date = { Feb 2017 },
volume = { 159 },
number = { 4 },
month = { Feb },
year = { 2017 },
issn = { 0975-8887 },
pages = { 41-46 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume159/number4/26993-2017912920/ },
doi = { 10.5120/ijca2017912920 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-07T00:04:53.974900+05:30
%A Nivin Ghamry
%T The use of PIC Microcontroller in Hearing Aids with Automatic Gain Control
%J International Journal of Computer Applications
%@ 0975-8887
%V 159
%N 4
%P 41-46
%D 2017
%I Foundation of Computer Science (FCS), NY, USA
Abstract

PIC Microcontrollers have been achieving low-cost product development and control solutions for medical device manufacturers over the past years. This paper presents a PIC microcontroller-based automatic gain control system for digital hearing aid devices. Noise reduction and speech enhancement are achieved through a wavelet transform-based digital signal processing unit. According to the recognized noise condition in the audio signals, the microcontroller is programmed to send a control signal to the digital volume controller to adjust the volume level in real time. Experimental tests are carried out on real data of hearing impairments suffering from different types of hearing losses. The microcontroller used in this work is the high performance enhanced flash PIC18F4520 of microchip which has an on- chip analog to digital converter (ADC) peripheral. The ADC features of PIC are used to detect and compare the sound level. ‘C’ and assembly language programs are developed to control the function of the microcontroller. MPLAB Integrated Development Environment (IDE) is applied for the development of the proposed embedded application employing PIC microcontroller.

References
  1. www.microchip.com/medical/Soulutions for medical applications
  2. A.O. Eze, G. Ihekweaba and N. R. Chinyere, "Exploring a microcontroller based hearing aid with an output level indicator," International Journal of Computational Engineering Research, vol. 2, pp.253-255.
  3. M. A.A. Mashud, M. Bishwas, S. R.Paul, S. C. Barman and Md. S. Islam, " Microcontroller based low-power consumption smart hearing aid," International Journal of Emerging Trends in Engineering and Development, vol.2, pp. 567-572, Mar. 2013.
  4. N. Ghamry, "A Microcontroller-Based Design for Digital Hearing Aid Devices", International Journal of Emerging Trends in Engineering and Development, vol.4, pp. 407-415, July. 2013.
  5. M. Ziad , S. Irtiza and A. Shah, "Audio signal's test in designing a cost-effective hearing aid device using a microcontroller", International Journal of Biomedical Engineering and Technology, vol. 20, pp. 195–207, March 2016.
  6. J. Smith; “Modern Communication Circuits”; McGraw-Hill, 1986.
  7. D. Green; “Global stability analysis of automatic gain control circuits”; Circuits and Systems, IEEE Transactions on; Vol. 30, Issue 2, pp. 78–83, Feb. 1983.
  8. Textbook of Hearing Aid Amplification: Technical and Clinical Considerations. (2000). Publication of Cengage Learning., Robert E. Sandlin.
  9. U. Cheng and S-Yuh Lee and An-Po Lin "A 0.6-V 1.8-μW automatic gain control circuit for digital hearing aid", IEEE Asia Pacific Conference on Circuits and Systems, 2008. APCCAS 2008.
  10. N. Ghamry, "FPGA Implementation of Hearing Aids using Stationary Wavelet-Packets for Denoising", International Journal of Computer Applications , Vol.69– No.15,pp. 30-36, May 2013.
  11. M. Lavielle, "Detection of multiple changes in a sequence of dependent variables, Stochastic Processes and their Applications ",Elsevier Science83 (1999) 79-102.
  12. L. A., Drake, J. C. Rutledge, and J. Cohen, "Wavelet analysis in recruitment of loudness compensation", IEEE Transaction on Signal Processing, vol.41, pp.3306 – 3312,1993.
  13. British Society of Audiology (2011), Pure tone air and bone conduction threshold audiometry with and without masking and determination of uncomfortable loudness levels.
Index Terms

Computer Science
Information Sciences

Keywords

automatic gain control hearing aid PIC microcontrollers stationary wavelet transform.

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